CN109179357A - The configuration of aluminium industry polished and cleaned Sewage treatment compound fertilizer's method and system - Google Patents
The configuration of aluminium industry polished and cleaned Sewage treatment compound fertilizer's method and system Download PDFInfo
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- CN109179357A CN109179357A CN201810843393.0A CN201810843393A CN109179357A CN 109179357 A CN109179357 A CN 109179357A CN 201810843393 A CN201810843393 A CN 201810843393A CN 109179357 A CN109179357 A CN 109179357A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/36—Aluminium phosphates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/37—Phosphates of heavy metals
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
本发明公开了铝行业抛光清洗废水回收复合肥方法与系统配置，其中高压雾化喷淋槽、第二不流动水洗槽和第一不流动水洗槽依次连通；高压雾化喷淋槽连接有用于存储喷淋废水的储存罐，高压雾化喷淋槽通过储存罐与第二不流动水洗槽相连通；磷酸铝回收系统包括反应罐、五号泵、液氨罐和压滤机，反应罐与一号泵相连通，N‑P复合肥回收系统包括依次相连通的回收罐、七号泵和过滤器。本发明还公开了抛光液回收复合肥的方法。采用水洗槽截留抛光液，进行集中处理，避免了与其他用水混合后再处理这些海量废水的麻烦，大幅降低处理含磷和氨氮废水的环保成本，大幅减少含镍固体危废排放。采用高压雾化喷淋槽，减少废液回收量。
The invention discloses a method and system configuration for recycling compound fertilizer from polishing and cleaning wastewater in the aluminum industry. The storage tank for storing spray wastewater, the high-pressure atomization spray tank is connected with the second non-flow washing tank through the storage tank; the aluminum phosphate recovery system includes a reaction tank, a No. 5 pump, a liquid ammonia tank and a filter press, and the reaction tank is connected to the The No. 1 pump is connected, and the N‑P compound fertilizer recovery system includes a recovery tank, No. 7 pump and a filter that are connected in sequence. The invention also discloses a method for recycling compound fertilizer from polishing liquid. The polishing liquid is retained in a washing tank for centralized treatment, which avoids the trouble of mixing with other water and then treats these massive wastewaters, greatly reduces the environmental protection cost of treating phosphorus-containing and ammonia-nitrogen wastewater, and greatly reduces the discharge of nickel-containing solid hazardous waste. Adopt high-pressure atomization spray tank to reduce the amount of waste liquid recovery.
Description
Technical field
The present invention relates to aluminium product technical field more particularly to aluminium industry polished and cleaned Sewage treatment compound fertilizer's method with
System configuration.
Background technique
Aluminium alloy has many advantages, such as that processing performance is excellent, corrosion resistance is good, surface aesthetic, the rate of recovery are high, in building, traffic fortune
The industries such as defeated, mechanical, electric power are applied widely.In recent years, aluminium for copper, aluminium generation wood, aluminium for steel, expand aluminium application range
Trend is more obvious.Aluminium processing industry is both conventional industries, is even more full of the rising industry of vitality.According to statistics, American-European flourishing
Country consumes aluminium alloy 32kg or more year per capita, and China only has 13kg or so per capita, and only the one third of developed country is left
The right side, there are also huge growth spaces for domestic aluminium alloy consumption.But aluminium processing industry energy consumption is high, total amount of pollutants discharged is big, resource
The low common problem of recovery utilization rate highlights to restrict the bottleneck and obstacle of industry development.
Aluminium industry production includes the processes such as electrolysis, founding, pressure processing, surface treatment, and each process can generate when production
Different degrees of exhaust gas, waste water, waste residue.A large amount of aluminium ash is generated when electrolysis and founding, extrusion process, which generates, stews mould alkaline waste liquor,
Surface treatment process generates all kinds of waste water and dregs containing the complicated components such as acid, alkali, treatment agent and chromium, nickel heavy metal ion.
By the way of " treatment of wastes with processes of wastes against one another ", stews mould waste liquid, oxidation line waste water, spraying coating line waste water, polish line waste water and discharge
Neutralized to waste water center, the waste water of waste water central collection, containing Al3+, Na+, NH4+, Ni2+, Sn2+, Cr6+ etc. sun from
Son, the anion such as SO42-, F-, NO3-, NO2-, S2-, Cl-, tartrate anion, glucose acid group, acetate and organic phenol,
Organic matters such as surfactant and acrylic resin etc..Acid waste water, alkaline waste water are usually to mix neutralisation treatment, and give up containing chromium
Water, nickel-containing waste water must be handled individually.Oxidation electrophoresis material ratio decline in recent years, but most of aluminum material factories or acid waste water are more
In alkaline waste water, soda acid water all mixes processing, in acidity after waste water mixing, need to put into a large amount of piece alkali, lime and
PAC, PAM produce a large amount of waste residues.The useful resources such as a large amount of metallic aluminiums, acid, alkali in waste residue are not utilized, and are caused huge
Large resource waste.Waste residue belongs to hazardous waste, contains aluminium hydroxide, fluoride, sulfide, nickel salt, phenol, nitrate, nitrous
A variety of poisonous and harmful substances such as hydrochlorate, environmental hazard is huge, can not fill, and has great environmental hazard.At waste water center
After reason, separation of solid and liquid, middle water contains sodium ion, ammonium ion, sulfate radical, nitrate anion, nitrite anions, acetate, tartrate anion, sulphur
Thiosulfuric acid root, chloride ion, sulphion, fluorine ion etc., can not reuse.Current Environmental Protection Situation forces enterprise will be to energy-saving and emission-reduction
And resource circulation utilization direction Transformation Development, but lack the technology of mature and reliable.Water fully recovering in realization, zero output of waste residue,
Utilization of resources value maximization has great environmental benefit, Social benefit and economic benefit.
The latest edition " National Hazard waste register " of execution from August 1st, 2016 arranges acid and alkaline waste water waste residue
Enter register management, waste classification is HW34, HW35 respectively.Acid, alkaline residue, chromium slag, nickel slag have been included in latest edition " National Hazard waste
Register ".
Aluminium alloy polishing is to produce the important means of high-grade aluminium, and all kinds of electronic product casings, high-speed rail interior decoration, bathroom are set
It is standby etc., it is general to select polishing aluminium.In addition to atmosphere pollution, bigger pollution is the pollution of three sour waters for polishing.One ton of polishing of every production
Material consumes three acid 250-350Kg with subsequent rinse bath and is discharged into waste water center.This extensive production method harm is huge
Greatly, first is that having lost three acid, metallic aluminium is wasted, three acid consumption reach 300kg/t or more；Second is that processing spent acid increases quite
Big cost；Third is that flood tide waste residue causes environmental hazard.
Being retained polishing fluid using non-mobile water washing trough after polishing, be evaporated reuse once is the section acid hand being widely used
Section.But the sour evaporation process of retention three generates a large amount of smog, pollutes environment, processing cost is huge；Three sour evaporation process energy consumptions are huge
Greatly, cost should not be overlooked；Container for evaporation corrosion is too fast, every two years needs replacing once, investment is too many.Three acid recovery actual motions
In, there is the deficiencies of pollution is big, high energy consumption and efficiency is low, cost is big.In view of the bad using effect of three acid recoverys, most of aluminium
Processing enterprise, gradually deactivate three acid recoverys, restored direct emission into waste water center conventional method.
Aluminum aluminium ash and aluminium slag minimizing recycling direction:
1, the principle followed: minimizing control, harmless treatment, resource utilization, it is necessary to government driving, enterprise be leading,
Third party's marketization configures resource, and the unification of three power could obtain positive progress；
2, source controls, and classifies to each pharmacy slot and retains, online to convert, and resource utilization reduces waste water and dregs discharge amount；
3, surface treatment reagent combination is improved, nontoxic, less toxic, the easy recycling of use, the chemical constituent substitution of easy-clear are traditional
Contain Na+、NH4 +、Ni2+、Sn2+、Cr6+、NO2 -、NO3 -、Cl-、F-、CH3COO-, glucose acid group, tartrate anion, S2O32- etc.
Compound is done from source, reduces waste water recycling and solid waste is innoxious, technical threshold of resource utilization；
4, reinforce Enterprises Universities Researches Union, expand thinking and the field of waste residue comprehensive utilization, realize that comprehensive utilization value maximizes.
Aluminium alloy polishing acid pickle is very big in some amount of area, and such as Foshan, year consumption polishing is about 200,000 tons sour,
60,000 tons of sulfur acid, 30,000 tons of phosphatase 11 and 10,000 tons of nitric acid, account for about the half of 400,000 tons of national dosage.These polishing spent acid are handled,
National annual 1000000 tons of phosphorus-containing waste slag of generation or more, while consuming about 50,000,000 tons and using water.
The traditional polish line for generating wastewater and waste acid is as shown in Figure 1.1#, 5#, 8#, 11#, 14# slot are work nest, each work
Slot matches a set of flowing rinsing bowl, and polishing treatment needs 16 slot positions, and wherein 1# slot is polishing trough, subsequent washing 2#, 3#, 4# slot
The polishing fluid of sulfur acid, phosphoric acid and nitric acid is cleaned, waste water enters wastewater treatment center, mixed with the nickel-containing waste water of coloring and sealing of hole slot
It closes, generates the waste residue containing Ni-P-Al.Currently, usually using lime treatment wastewater and waste acid, calcium sulfate and calcium phosphate are generated.This place
Reason mode, it is at high cost, waste residue amount is big, and there are ammonia nitrogen discharges.
There is polishing waste liquid side in need of immediate treatment, and reprocessing after the big mixing of traditional water for cleaning in modern aluminum processing enterprise
Method is too simple, generates the waste residue of the phosphorous and nickel of magnanimity, handles these waste residues, and society pays expensive environmentally friendly cost thus,
Urgent exploitation new technology, solves the environmental issue of polishing spent acid.
Summary of the invention
It is an object of the invention to propose aluminium industry polished and cleaned Sewage treatment compound fertilizer system configuration, there is polishing waste water
The characteristics of capable of individually handling.
It is compound it is an object of the invention to propose to recycle using aluminium industry polished and cleaned Sewage treatment compound fertilizer's system configuration
The method of fertilizer has the characteristics that save cost.
To achieve this purpose, the present invention adopts the following technical scheme:
Aluminium industry polished and cleaned Sewage treatment compound fertilizer system configuration, including set gradually polishing trough, first do not flow
Rinsing bowl, the second non-mobile water washing trough, high-pressure atomization spray groove, aluminum phosphate recovery system and N-P compound fertilizer recovery system；
High-pressure atomization spray groove, the second non-mobile water washing trough and the first non-mobile water washing trough are sequentially communicated, high-pressure atomization spray
Leaching slot, the second non-mobile water washing trough and the first non-mobile water washing trough are for retaining the polishing fluid from polishing trough；High-pressure atomization spray
Leaching slot is connected with the holding vessel for storing spent shower water, and high-pressure atomization spray groove passes through holding vessel and the second non-mobile water washing trough
It is connected；
Aluminum phosphate recovery system includes that reactor tank, No. five pumps, ammonia tank and filter press, reactor tank are connected with No.1 pump,
No. five pumps are set to the lower part outlet of reactor tank, and ammonia tank is connected with the lower part of reactor tank by pipeline, filter press and No. five pumps
Outlet be connected by pipeline, No. five pump outlets be connected by circulating line with the top of reactor tank, No. five pumps are used for
Make in the liquid tank in reactor tank circulation by circulating line and for by the product pump in reactor tank to filter press；
N-P compound fertilizer recovery system includes being sequentially connected logical recycling can, No. seven pumps and filter, and No. seven pumps will be for that will return
Material in closed cans is pumped into filter, and the liquid outlet of filter press is connected with recycling can, and the bottom of recycling can has been located at No. six
The outlet of pump, No. six pumps is connected with circulating line.
It further, further include cooling system, cooling system includes cooling tower, No. four pumps and cooling cycle pipeline, cooling
Tower and No. four pumps are each provided on cooling cycle pipeline, and the cooling section of cooling cycle pipeline is located in reactor tank, and No. four pumps are for making
Coolant liquid circulation in cooling cycle pipeline.
Using rinsing bowl retain polishing fluid, focused on, avoid with other mixed with water after reprocess these sea
The environmentally friendly cost for handling phosphorous and ammonia nitrogen waste water is greatly reduced in the trouble for measuring waste water, and nickeliferous solid dangerous waste discharge is greatly decreased.It adopts
With high-pressure atomization spray groove, devil liquor recovery amount is reduced.
Further, the connectivity part of the first non-mobile water washing trough and the second non-mobile water washing trough is provided with No. two one-way valves.
Holding vessel is connected with the second non-mobile water washing trough by pipeline, No. two pumps is provided on the pipeline, No. two pumps will be for that will store
Spray waste liquid in tank is pumped into the second non-mobile water washing trough；First non-mobile water washing trough is connected with No.1 pump, No.1 by pipeline
Pump is for pumping out the tank liquor in the first non-mobile water washing trough.
After water level decreasing in the first non-mobile water washing trough, the tank liquor in the second non-mobile water washing trough can pass through No. two
Check valve enter the first non-mobile water washing trough, No. two check valves can prevent the high concentration tank liquor in the first non-mobile water washing trough into
Enter the second non-mobile water washing trough.When the tank liquor concentration in the first non-mobile water washing trough is higher, No.1 is pumped out, and is collected useless
Liquid is focused on.
It further, further include cooling pipe, cooling pipe successively passes through the first non-mobile water washing trough and second and do not flow
Rinsing bowl, cooling pipe is for cooling down the tank liquor in the first non-mobile water washing trough and the second non-mobile water washing trough.
The setting of cooling pipe can guarantee that the tank liquor of two non-mobile water washing troughs is in lower temperature levels, reduce polishing material brightness damage
It loses.
Further, high-pressure atomization spray groove is connected with No. three pumps, cooling pipe after the second non-mobile water washing trough with
The import of No. three pumps is connected, and No. three pumps are for being pumped into high-pressure atomization spray groove as spray-water for the water in cooling pipe.
Cooling pipe is the water supply of high-pressure atomization spray groove, improves the lowering ability to two non-mobile water washing troughs to greatest extent, simplifies system
The pipeline structure of system.
Using the method for aluminium industry polished and cleaned Sewage treatment compound fertilizer's system configuration recycling compound fertilizer, including following step
It is rapid:
Polishing waste water retention: aluminium alloy successively pass through polishing trough, the first non-mobile water washing trough, the second non-mobile water washing trough and
High-pressure atomization spray groove, the polishing fluid that aluminium alloy carries is by the first non-mobile water washing trough, the second non-mobile water washing trough and high pressure mist
Change spray groove retention to be supplied after water level decreasing in the second non-mobile water washing trough by the spent shower water in holding vessel；
Polishing waste water: the tank liquor density in the first non-mobile water washing trough of detection is collected, when density reaches 1.25-1.31g/
cm3When, the tank liquor for collecting the first non-mobile water washing trough enters reactor tank, as polishing waste water, and polishing includes phosphate radical in waste water
Ion, nitrate ion and sulfate ion；
Aluminum phosphate and liquid N-P compound fertilizer recycle: No. five pump startups make circulation, ammonia tank in the liquid tank in reactor tank
Liquefied ammonia is added into waste water, until pH value 6.5-7.5, is stirred to react, cooling, the solidliquid mixture in reactor tank is pumped by No. five pumps
Filter press makes to be separated by solid-liquid separation, and solid is aluminum phosphate and nickel phosphate, and liquid enters recycling can withdrawal liquid from the outlet of filter press and is
Liquid N-P compound fertilizer.
Further, system further includes cooling pipe, and cooling pipe successively passes through the first non-mobile water washing trough and second not
Rinsing bowl is flowed, cooling pipe is used to carry out the tank liquor in the first non-mobile water washing trough and the second non-mobile water washing trough cooling drop
Temperature；
The production temperature of first flowing rinsing bowl is controlled at≤50 DEG C.
Liquefied ammonia is added using into polishing waste liquid, aluminum phosphate and liquid N-P compound fertilizer is obtained, turns waste into wealth, liquid waste processing
It is at low cost, it solves and polishes that phosphorous in waste liquid and nickel Solid state fermentation expense is high and environmentally friendly at high cost asks in the prior art
Topic.
Further, further comprising the steps of:
The liquid N-P compound fertilizer of recycling is subjected to condensing crystallizing, crystal drying grinding is obtained into liquid containing ammonium sulfate-ammonium phosphate-
The N-P compound fertilizer of ammonium nitrate.
Further, further include preparing granular organic-inorganic composite fertilizer step:
Organic waste residues and waste residue containing zymophyte are added in the liquid N-P compound fertilizer of recycling, fermentation cures, and being made granular has
Machine-inorganic composite fertilizer, moisture content≤10% of organic waste residues.
In view of liquid N-P compound fertilizer condensing crystallizing higher cost, being absorbed water and being added using organic waste residues contains zymophyte
Waste residue produces granular organic-inorganic composite fertilizer, has not only eliminated the energy consumption and environmentally friendly cost of condensing crystallizing, but also has opened up organic waste residues
Purposes, also solve the problem of compound fertilizer from caking and soil hardening, be to achieve many things at one stroke.
Further, in preparing granular organic-inorganic composite fertilizer step, first addition contains hair in liquid N-P compound fertilizer
Yeast-like fungi waste residue is then gradually adding organic waste residues, and uniformly mixed mixture is aerated fermentation, until mixture hair black hair is black
To cure terminal, granular organic-inorganic composite fertilizer is obtained；
The additive amount of organic waste residues is not until mixture drips.
It can reduce technology difficulty by the setting to organic waste residues additive amount and curing terminal.
The invention has the benefit that
1, setting polishing fluid waste water retains for the first time, is responsible for retention by two non-mobile water washing troughs and high-pressure atomization spray groove, stays
It is stored in spare in two non-mobile water washing troughs and holding vessel.When production polishing aluminium, rinsing bowl retains polishing fluid, concentrates individually place
Reason, avoid with other mixed with water after reprocess the troubles of these magnanimity waste water, be greatly reduced and handle phosphorous and ammonia nitrogen waste water
Environmentally friendly cost, the discharge of nickeliferous solid dangerous waste is greatly decreased；
2, high-pressure atomization spray groove is used in the retention of polishing fluid waste water for the first time, reduces devil liquor recovery amount.By Fig. 1, tradition
When mode produces polishing aluminium, configuration 2#, 3# and 4# flow rinsing bowl after 1# polishing trough, and tap water goes out from 4# slot into, 2# slot, instead
To series connection, ton material consumes 3 tons of water or more；It polishes waste liquid direct emission and is formed solid into waste water center with nickel-containing waste water mixed processing
Body dangerous waste.The present invention uses spraying method for the first time, and remaining slurry is recycled, and is greatly reduced with water, reduction devil liquor recovery amount, reduction
Pressure recovery has established solid foundation for online individually processing polishing waste water, device miniaturization；
3, setting aluminum phosphate recovery system, the aluminium being responsible in recycling polishing fluid waste water, reaction generate aluminum phosphate online for the first time
And nickel phosphate, it realizes and is separated by solid-liquid separation；
4, N-P compound fertilizer recovery system is set for the first time, is responsible for the supernatant in recycling being pumped into filter process, dispense
Compound fertilizer's solution；The sediment for recycling pot bottom is pumped into reactor tank again, carries out secondary recovery；
5, liquefied ammonia is added using into polishing waste liquid, obtains aluminum phosphate and liquid N-P compound fertilizer, turns waste into wealth, at waste liquid
It manages at low cost, solves that polish phosphorous and nickel Solid state fermentation expense in waste liquid in the prior art high and environmentally friendly at high cost
Problem；
6, organic waste residues (organic waste residues in vegetalitas source and/or the organic waste of agricultural byproducts processing generation are utilized for the first time
Slag) (moisture content≤10%) absorb the moisture in liquid N-P compound fertilizer, and solid-liquid is mixed and made into organic-inorganic composite fertilizer.By this
The liquid N-P compound fertilizer of recycling is invented, containing 50% or more moisture, condensing crystallizing not only consumed energy, but also not environmentally, also increase cost.
Using organic waste residues, fresh and dried vinasse are properly added, introduce yeast, the liquid N-P compound fertilizer that the mixing present invention recycles, production has
Machine-inorganic composite fertilizer, had not only eliminated the energy consumption and environmentally friendly cost of condensing crystallizing, but also had opened up the purposes of organic waste residues, also solved
The problem of compound fertilizer from caking and soil hardening, is achieve many things at one stroke.
Detailed description of the invention
Fig. 1 is aluminium polishing production line schematic diagram in the prior art；
Fig. 2 be one embodiment of the invention aluminium industry polished and cleaned Sewage treatment compound fertilizer's method and system configuration and under
Swim the schematic diagram of production line；
Fig. 3 is the schematic diagram of aluminium industry polished and cleaned Sewage treatment of the present invention compound fertilizer system；
Polishing trough 1, the first non-mobile water washing trough 2, the second non-mobile water washing trough 3, high-pressure atomization spray groove 4, holding vessel 5,
No. two pumps 6, No.1 pump 7, cooling pipe 8, three pumps 9, ash cleaning slot 10, first flows the flowing of rinsing bowl 11, second rinsing bowl 12,
Oxidation trough 13, third flowing rinsing bowl the 14, the 4th flow rinsing bowl 15, coloring slot the 16, the 5th flows rinsing bowl the 17, the 6th and flows
Rinsing bowl 18, sealing of hole slot the 19, the 7th flow rinsing bowl 20 and the 8th flowing rinsing bowl 21；
The check valve 04, five check valve 05, six of check valve 03, four of check valve 02, three of No.1 check valve 01, two
The valve 09, ten of valve 08, nine of valve 07, eight of check valve 06, seven valve 010, the valve 012,13 of ride on Bus No. 11 valve 011,12
The valve 017 of valve 016,17 of valve 015,16 of valve 014,15 of valve 013,14；
Aluminum phosphate recovery system 100, N-P compound fertilizer recovery system 200, reactor tank 101, five pump 102, ammonia tank 103,
It is filter press 104, circulating line 105, recycling can 201, seven pumps 202, filter 203, six pumps 204, cooling system 300, cold
But tower 301, four pumps 302, cooling cycle pipeline 303.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates technical solution of the present invention.
Aluminium alloy polishing purpose is to improve the dicoration of aluminium alloy.It is general to use two acid, three acid and electrobrightenings.Three acid are thrown
The general sulfur acid of light liquid, phosphoric acid and nitric acid.By taking three acid polishing as an example, the tank liquor Con trolling index of polishing trough is that (tank liquor, which is prepared, presses 100
Part poidometer):
Sulfuric acid 30wt.%；
Phosphoric acid 65wt.%；
Nitric acid 5wt.%；(1)
100-110 DEG C of temperature；
Time 20s-120s；
Dripping time < 20s；
Outside smoke removing, polishing maximum puzzlement is dripping time.Either electrobrightening, two acid polishings or three acid polishing,
Dripping time cannot be too long, is usually no more than 20s, too long to be easy to burn out aluminium, forms piebald or tear stains, polishing material do not conform to
Lattice.
As shown in Figure 1, in the prior art, the purpose of three rinsing bowls of setting is the residual polishing that cleaning polishing slot is taken out of
Liquid protects ash cleaning slot.Tap water is from 4# slot into through 3#, 2# slot goes out, differential concatenation, and water consume is 2.0-3.0 tons/ton material or so, consumption
Water is too big, and what is be discharged is that (polishing trough is stainless steel sink, cell wall in polishing process for sulfur acid, phosphoric acid, nitric acid and nickel ion
Be dissolved, nickel ion enters polishing fluid) waste water.It is limited by dripping time, generally polishes one ton of aluminium, bring the mixed of rinsing bowl into
It closes acid and reaches 250-350Kg.These spent acid of lime treatment are usually used, calcium sulfate and calcium phosphate are generated.This processing mode, cost
Height, waste residue amount are big, and there are ammonia nitrogen discharges.
Reprocessing is changed to online classification processing after the present invention mixes traditional ejected wash water, avoids and coloring slot and sealing of hole slot
Ejected wash water mixing, nickeliferous solid waste is formed after processing.Prior art design theory is unreasonable, and in Fig. 1,11# and 14# are nickeliferous
Tank liquor is directly entered 12#, 13#, 15#, 16# tetra- after aluminium coloring and sealing of hole and flows rinsing bowl, brings nickel-containing waste water into waste water
The water for cleaning of whole oxidation line other processes is polluted at center；After mixing, these nickel-containing waste waters are reprocessed, and need row up to standard
Put, difficulty as one can imagine, cost is surprising, and generates nickeliferous solid waste.This mode is stayed alone there is an urgent need to improve with online grouping sheet
Reason replaces traditional mixed processing mode, reduces environmentally friendly cost；
Tradition polishing 4# slot is flowed water for cleaning by the present invention, is changed to high-pressure atomization spray cleaning, cleaning is greatly reduced and uses
Water saves processing cost, takes a firm foundation for online classification processing, device miniaturization.2#, 3# and 4# are set after 1# polishing trough
The purpose of three rinsing bowls is the remaining slurry that cleaning polishing slot is taken out of, protects 5# ash cleaning slot.Tap water is from 4# slot into warp
3#, 2# slot go out, differential concatenation, and water consume is 2.0-3.0 tons/ton material or so, and water consumption is too big, and what is be discharged is sulfur acid, phosphoric acid
With the waste water of nitric acid, increase environmental protection treatment pressure；2#, 3# rinsing bowl are changed to non-mobile water washing trough by the present invention, 4# are flowed clear
Washing trough is changed to high-pressure atomization spray groove, and water for cleaning is greatly reduced, and to polish waste liquid online recycling, reclaimer miniaturization is established
Basis；
The passive processing waste water and dregs theory of abandoning tradition of the present invention, it is useless from the angle of recycling processing polishing waste liquid
Slag, change dangerous waste are valuable chemical resource, processing cost are not only greatly reduced, but also realize and be worth the maximum utilized containing phosphorus chemical product
Change.Prior art design theory is that 1# polishing trough is phosphorous and ammonia nitrogen tank liquor, is directly entered 2#, 3# and 4# after aluminium polishing
Three flowing rinsing bowls, bring phosphorous and ammonia nitrogen waste water into waste water center, and the cleaning for polluting whole oxidation line other processes is used
Water；Waste water center neutralizes these waste water, precipitated, filters pressing, obtains phosphorous and nickel solid slag, discharges ammonia nitrogen；These seas
Phosphorous and nickel waste residue is measured, clear stipulaties are dangerous waste for State Ministry of Environmental Protection.While paying environmentally friendly cost, preciousness is also wasted
Phosphor resource.There is an urgent need to improve, the present invention sets non-mobile water for 2# and 3# slot and washes retention this extensive production method
Slot actively retains polishing fluid, and configures special equipment, and online recycling contains phosphorus product, turns waste into wealth, and realizes dangerous waste recycling benefit
With.
There is polishing waste liquid side in need of immediate treatment, and reprocessing after the big mixing of traditional water for cleaning in modern aluminum processing enterprise
Method is too simple, generates the waste residue of the phosphorous and nickel of magnanimity, handles these waste residues, and society pays expensive environmentally friendly cost thus,
Urgent exploitation new technology, solves the environmental issue of polishing spent acid.
The method of Aluminum polishing fluid recycling compound fertilizer of the invention, is puzzled in the production for fully realizing aluminium processing enterprise,
It is researched and developed for many years, environmental protection pressure huge polishing treatment technique big to existing aluminium processing enterprise waste water and dregs amount has carried out preceding institute
After the system research not having, a new technology of birth.
The present invention is realized by following theoretical foundation, quantitative and qualitative analysis.
One, the theoretical foundation of aluminium industry polished and cleaned Sewage treatment compound fertilizer's method and system configuration
By taking three acid polishing as an example, polishing trough Con trolling index are as follows: sulfuric acid 30wt.%, phosphoric acid 65wt.%, nitric acid 5wt.%,
100-110 DEG C of temperature, polishing time 20s-120s, dripping time < 20s.Traditional mode of production mode are as follows: when aluminium presses 20s-120s
Between polish after, rise hang drip < 20s, into 2# flow rinsing bowl；1min is cleaned, rises and hangs drip 30s, flows and washes into 3#
Slot；1min is cleaned, rises and hangs drip 30s, flows rinsing bowl into 4#；1min is cleaned, rises and hangs drip 30s, completes polishing and washing
Process.
By the requirement of online retention polishing fluid of the invention, high-pressure atomization spray groove configures holding vessel, reduces water for cleaning, drop
Low Sewage treatment amount.The mixture of the polishing fluid and water that take the first non-mobile water washing trough to retain adds liquefied ammonia, and following chemistry occurs
Reaction:
2H2SO4+3NH3=NH4HSO4+(NH4)2SO4
3H3PO4+6NH3=NH4H2PO4+(NH4)2HPO4+(NH4)3PO4 (1)
HNO3+NH3=NH4NO3
Al3++PO4 3-=AlPO4↓ (or other heavy metals)
3Ni2++2PO4 3-=(Ni)3(PO4)2↓
With the increase of liquefied ammonia additive amount, react to NH4H2PO4(pH4.5)→(NH4)2HPO4(pH6.5-7.5) →
(NH4)3PO4(pH14.0) mobile, as reacting liquid pH value rises, AlPO4Gradually it is precipitated.As pH value=6.5-7.5, stop
Dosing.Aluminum phosphate and nickel phosphate are filtered, (NH can must be contained4)2SO4、(NH4)2HPO4、 NH4H2PO4And NH4NO3Mixed liquor, concentration knot
Crystalline substance can produce complex fertilizer product.In addition to sodium, potassium, the solubility of other heavy phosphates is very low, it can be ensured that contained by compound fertilizer
Heavy metal is up to standard.
Two, aluminium industry polished and cleaned Sewage treatment compound fertilizer's method and system configuration quantitative and qualitative analysis and experimental result
After non-mobile water washes retention, the first non-mobile water washing trough, the second non-mobile water washing trough retain polishing fluid, high-pressure atomization
Spray groove sprays polishing material, further retains polishing fluid, it is spare that spray-water flows into holding vessel.Polishing is produced by this retention mode
Material, the cleaning solution acid concentration in the first non-mobile water washing trough constantly increases, temperature increases, density increases, and polishing material is not because flow
Move washing and gradually loss of gloss.In order to keep polishing brightness, it is necessary to control the acid concentration and temperature of the first non-mobile water washing trough.Due to
Phosphoric acid is not easy accurately to titrate, and monitors acid concentration with the density of the first non-mobile water washing trough, is easy to execute-in-place.
1, the non-mobile water of the first non-mobile water washing trough washes entrapping tank different densities (acid concentration) to the shadow of polishing material brightness
It rings
The temperature for fixing the first non-mobile water washing trough is 50 DEG C, produces polishing material, not through the first non-mobile water washing trough, second
After the non-mobile water of flowing rinsing bowl is washed, spray washing dries, and detects the density (detecting under room temperature) of the first non-mobile water washing trough
With polishing material brightness value (GU), the results are shown in Table 1:
| Brightness | 1.0 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 |
| Density | 663 | 654 | 646 | 632 | 541 | 465 | 343 |
Table 1 is influence of tank liquor (at the 50 DEG C) different densities to polishing material brightness of the first non-mobile water washing trough.1 table of table
Bright, the tank liquor density (acid concentration) of the first non-mobile water washing trough influences polishing brightness serious, and acceptable control range is the
Tank liquor density≤1.3g/cm of one non-mobile water washing trough3, otherwise, the serious loss of gloss of polishing material.
2, influence of the tank liquor different temperatures of the first non-mobile water washing trough to polishing material brightness
The tank liquor density for fixing the first non-mobile water washing trough is 1.3g/cm3, polishing material is produced, is washed through the first non-mobile water
Slot, the second non-mobile water washing trough non-mobile water wash after, spray washing dries, and detects the temperature (DEG C) and polishing material brightness of 2#
It is worth (GU), the results are shown in Table 2:
| Brightness | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
| Temperature | 680 | 664 | 648 | 636 | 635 | 565 | 443 |
Table 2 is the tank liquor (1.3g/cm of the first non-mobile water washing trough3Under density) different temperatures is to the shadow of polishing material brightness
It rings.It is serious that table 2 shows that the tank liquor temperature of the first non-mobile water washing trough influences polishing brightness, and acceptable control range is the
Tank liquor temperature≤50 DEG C of one non-mobile water washing trough, otherwise, the serious loss of gloss of polishing material.Since polishing trough temperature is 110 DEG C or so,
When production, the polishing fluid taken out of makes the first non-mobile water washing trough, the second non-mobile water washing trough heating, for this purpose, the first non-mobile water
Washing trough, the second non-mobile water washing trough need to configure cooling system, it is ensured that temperature is lower than 50 DEG C, protects polishing material brightness.
3, it is separated by solid-liquid separation the aluminium ion and nickel ion of the tank liquor of the first non-mobile water washing trough, generates aluminum phosphate and nickel phosphate
Take tank liquor 1L (the density 1.3g/cm of the first non-mobile water washing trough3), (1) formula is pressed, adds liquefied ammonia, side edged is cooling,
Side stirring, until it is 6.5-7.5 that reaction solution, which is pH value,.By (1) formula, reaction solution is gradually muddy, until stopping adding when pH=6.5-7.5
Medicine stands 2 hours, and beaker bottom precipitates one layer of aluminum phosphate white solid and a small amount of nickel phosphate.Reaction product is subjected to solid-liquid point
From rinsing solids, drying obtains aluminum phosphate and nickel phosphate product.
4, condensing crystallizing separating liquid generates N-P compound fertilizer
Above-mentioned separating liquid 1000g is taken, condensing crystallizing is carried out, is dried, grinding obtains 453g liquid containing ammonium sulfate-ammonium phosphate-nitre
The N-P compound fertilizer of sour ammonium, liquid composite fertilizer contain solidfied material 45.3%, and aqueous is 54.7%.
5, powdery bagasse (moisture content≤10%) is added, produces organic-inorganic composite fertilizer
Taking above-mentioned moisture content is 54.7% liquid composite fertilizer 1000g, adds fresh and dried vinasse 10g, is gradually added dry
Powdery bagasse (moisture content≤10%), until not dripping, the dosage of bagasse (moisture content≤10%) is 250g, and finished product is
Granular organic-inorganic composite fertilizer, after fermentation in 50 days is made compost, bagasse (moisture content≤10%), which blacks, decomposes curing.Make compost factory
Area is equipped with ventilation equipment, accumulates Fire explosion to prevent methane.The suitable southern sugarcane producing region of this method, which is gathered materials on the spot, manufactures.
6, powdery stalk slag (moisture content≤10%) is added, produces organic-inorganic composite fertilizer
Taking above-mentioned moisture content is 54.7% liquid composite fertilizer 1000g, adds fresh and dried vinasse 10g, is gradually added dry
Powdery stalk slag (moisture content≤10%), until not dripping, the dosage of stalk slag (moisture content≤10%) is 280g, and finished product is
Granular organic-inorganic composite fertilizer, after fermentation in 50 days is made compost, stalk slag (moisture content≤10%), which blacks, decomposes curing.Make compost factory
Area is equipped with ventilation equipment, accumulates Fire explosion to prevent methane.The suitable northern com producing region of this method, which is gathered materials on the spot, manufactures.
7, powdery powdered rice hulls (moisture content≤10%) is added, produces organic-inorganic composite fertilizer
Taking above-mentioned moisture content is 54.7% liquid composite fertilizer 1000g, adds fresh and dried vinasse 10g, is gradually added dry
Powdered rice hulls (moisture content≤10%), until not dripping, the dosage of powdered rice hulls (moisture content≤10%) is 340g, and finished product is granular
Organic-inorganic composite fertilizer, after fermentation in 50 days is made compost, powdered rice hulls (moisture content≤10%), which black, decomposes curing.Plant area is made compost to match
Standby ventilation equipment accumulate Fire explosion to prevent methane.The suitable rice producing areas of southern China of this method, which is gathered materials on the spot, manufactures.
It should be noted that bagasse, stalk slag and powdered rice hulls can organic waste residues by vegetalitas source and agricultural and sideline productions
The organic waste residues that product processing generates replace, such as the agricultural crop straws slag such as straw, maize pulp, beans, peanut, production of forestry process
Branch batten slag, fallen leaves slag, withered the tendril slag, weeds slag, shell slag, soil dynamic test, megasse of middle remnants.
Three, aluminium industry polished and cleaned Sewage treatment of the present invention compound fertilizer system configuration
Aluminium industry polished and cleaned Sewage treatment compound fertilizer system configuration of the invention is as shown in Figures 2 and 3, including successively sets
Polishing trough 1, the first non-mobile water washing trough 2, the second non-mobile water washing trough 3, the high-pressure atomization spray groove 4, phosphoric acid alum recovery system set
System 100 and N-P compound fertilizer recovery system 200；
High-pressure atomization spray groove 4, the second non-mobile water washing trough 3 and the first non-mobile water washing trough 2 are sequentially communicated, high-pressure atomization
Spray groove 4, the second non-mobile water washing trough 3 and the first non-mobile water washing trough 2 are for retaining the polishing fluid from polishing trough 1；
High-pressure atomization spray groove 4 is connected with the holding vessel 5 for storing spent shower water, and high-pressure atomization spray groove 4 passes through storage
Tank 5 is deposited to be connected with the second non-mobile water washing trough 3；
Holding vessel 5 is connected with the second non-mobile water washing trough 3 by pipeline, and No. two pumps 6, No. two pumps are provided on the pipeline
6 for being pumped into the second non-mobile water washing trough 3 for the spray waste liquid in holding vessel 5.The pipe being connected between No. two pumps 6 and holding vessel 5
It is provided with No. five one-way valves 05 on road, No. four lists are provided on the pipeline being connected between holding vessel 5 and high-pressure atomization spray groove 4
Port valve 04 is provided with No. six one-way valves 06 on the pipeline that is connected between No. two pumps 6 and the second non-mobile water washing trough 3.
Using rinsing bowl retain polishing fluid, focused on, avoid with other mixed with water after reprocess these sea
The environmentally friendly cost for handling phosphorous and ammonia nitrogen waste water is greatly reduced in the trouble for measuring waste water, and nickeliferous solid dangerous waste discharge is greatly decreased.It adopts
With high-pressure atomization spray groove, devil liquor recovery amount is reduced.
The connectivity part of first non-mobile water washing trough 2 and the second non-mobile water washing trough 3 is provided with No. two one-way valves 02.When first
After water level decreasing in non-mobile water washing trough 2, the tank liquor in the second non-mobile water washing trough 4 can be entered by No. two check valves 02
First non-mobile water washing trough 2, No. two check valves 02 can prevent the high concentration tank liquor in the first non-mobile water washing trough 2 from entering second
Non-mobile water washing trough 3.
First non-mobile water washing trough 3 is connected with No.1 pump 7 by pipeline, and No.1 pump 7 is used for the first non-mobile water washing trough 2
Interior tank liquor pumps out.When the tank liquor concentration in the first non-mobile water washing trough 2 is higher, No.1 pump 7 is pumped out, and collects waste liquid
It is focused on.No.1 one-way valve 01 is provided on the pipeline being connected between No.1 pump 7 and the first non-mobile water washing trough 2.
The system further includes cooling pipe 8, and cooling pipe 8 is not flowed by the first non-mobile water washing trough 2 and second successively
Rinsing bowl 3, cooling pipe 8 is for cooling down the tank liquor in the first non-mobile water washing trough 2 and the second non-mobile water washing trough 3
Cooling.The setting of cooling pipe 8 can guarantee that the tank liquor of two non-mobile water washing troughs is in lower temperature levels, reduce polishing material
Luminance loss.
High-pressure atomization spray groove 4 is connected with No. three pumps 9, and cooling pipe 8 pumps after the second non-mobile water washing trough 3 with No. three
9 import is connected, and No. three pumps 9 are for being pumped into high-pressure atomization spray groove 4 as spray-water for the water in cooling pipe 8.It is cold
But pipeline 8 is the water supply of high-pressure atomization spray groove 4, improves the lowering ability to two non-mobile water washing troughs to greatest extent, simplifies system
The pipeline structure of system.No. three one-way valves 03 are provided on the pipeline that No. three pumps 9 are connected to cooling pipe 8.
The downstream of aluminium industry polished and cleaned Sewage treatment compound fertilizer's method and system configuration of the invention sets gradually ash disposal
Slot 10, first flows rinsing bowl 11, second and flows rinsing bowl 12, oxidation trough 13, the third flowing flowing washing of rinsing bowl the 14, the 4th
Slot 15, coloring slot 16, the 5th flowing rinsing bowl 17, the 6th flowing rinsing bowl 18, sealing of hole slot 19, the 7th flowing rinsing bowl 20 and the
Eight flowing rinsing bowls 21.Cooling pipe 8, which successively flows the flowing of rinsing bowl the 15, the 6th with the second flowing rinsing bowl the 12, the 4th, to be washed
Slot 18 is connected with the 8th flowing rinsing bowl 21, supplies water for these flowing rinsing bowls.Cooling pipe 8 and the second flowing rinsing bowl
12, the 4th flowing rinsing bowl the 15, the 6th flows is respectively arranged on the pipeline between rinsing bowl 18 and the 8th flowing rinsing bowl 21
No. seven 09, No. ten valve 010 of valve of valve 08, nine of valve 07, eight.First flowing rinsing bowl 11 is connected with the second flowing rinsing bowl 12
It is logical；Third flows rinsing bowl 14 and is connected with the 4th flowing rinsing bowl 15；5th flowing rinsing bowl 17 and the 6th flowing rinsing bowl
18 are connected；7th flowing rinsing bowl 20 is connected with the 8th flowing rinsing bowl 21.First flowing rinsing bowl 11, third circulating water
The washing waste water that washing trough the 14, the 5th flows in rinsing bowl 17 and the 7th flowing rinsing bowl 20 flows into waste water center and carries out at concentration
Reason.
Aluminum phosphate recovery system 100 includes reactor tank 101, five pumps 102, ammonia tank 103 and filter press 104, reactor tank
101 7 are connected with No.1 pump, and No. five pumps 102 are set to the lower part outlets of reactor tank 101, under ammonia tank 103 and reactor tank 101
Portion is connected by pipeline, and filter press 104 is connected with the outlet of No. five pumps 102 by pipeline, and the outlet of No. five pumps 102 passes through
Circulating line 105 is connected with the top of reactor tank 101, and No. five pumps 102 by circulating line 105 for being made in reactor tank 101
Liquid tank in circulation and for by the product pump in reactor tank 101 to filter press 104.
Ride on Bus No. 11 valve 011 is provided on the pipeline that the import of No. five pumps 102 is connected to reactor tank 101.On circulating line 105
It is provided with ten No. three valves 013.Ten No. two valves 012 are provided on the pipeline that ammonia tank 103 is connected to reactor tank 101.Reactor tank 101
Ten No. four valves 014 are provided on pipeline between filter press 104.Pipeline and liquid between No. five pumps 102 and ride on Bus No. 11 valve 011
Ammonia tank 103 is connected by pipeline, realizes the connection of ammonia tank 103 and reactor tank 101.Reactor tank 101 is provided with electric stirring
Device.
N-P compound fertilizer recovery system 200 includes being sequentially connected logical recycling can 201, seven pumps 202 and filter 203, and seven
Number pump 202 is for by the material in recycling can 201 being pumped into filter 203, liquid outlet and 201 phase of recycling can of filter press 104
Connection, the bottom of recycling can 201 have been located at No. six pumps 204, and the outlet of No. six pumps 204 is connected with circulating line 105.
Ten No. seven valves 017 are provided on pipeline between recycling can 201 and No. seven pumps 201.Recycling can 201 and No. six pumps
Ten No. five valves 015 are provided on the pipeline of 204 connections.16 are provided on the pipeline that No. six pumps 204 are connected to circulating line 105
Number valve 016.Ten No. three valves 013 are located on the pipeline between No. six pumps 204 and No. five pumps 102.Recycling can 201 is provided with electric stirring
Device.
The recovery system of the compound fertilizer further includes cooling system 300, and cooling system 300 includes cooling tower 301, four pumps
302 and cooling cycle pipeline 303, cooling tower 301 and No. four pumps 302 are each provided on cooling cycle pipeline 303, cooling cycle pipe
The cooling section in road 303 is located in reactor tank 201, and No. four pumps 302 are for recycling the coolant liquid in cooling cycle pipeline 303.
The operating process of aluminium industry polished and cleaned Sewage treatment compound fertilizer's method and system configuration is as follows:
1, polishing waste water retains system operatio process: opening No. seven 09, No. ten valve 10 of valve of valve 08, nine of valve 07, eight, opens
Open the ejected wash water in flowing cooling pipe 8, cooling first non-mobile water washing trough 2, the second non-mobile water washing trough 3；It does not flow when first
When dynamic 2 temperature of rinsing bowl controls≤50 DEG C, start to polish；After aluminium alloy polishes 20s-120s into polishing trough, drip 20s；Into
60 s, drip 30s are cleaned in first non-mobile water washing trough 2；Into the second non-mobile water washing trough 3,60s, drip 30s are cleaned；Into
High-pressure atomization spray groove 4, sprays 30s, and shower water flows into holding vessel 5；It completes polishing fluid waste water and retains system operatio process；
2, polishing fluid wastewater collection system operating process: detection 2 density of the first non-mobile water washing trough, when density reaches
1.3g/m3When, No.1 check valve 01 and No.1 pump 7 are opened, the polishing fluid that the first non-mobile water washing trough 2 retains is pumped into reaction
Tank；The polishing fluid that holding vessel 5 retains is pumped into the second non-mobile water washing trough 3 by No. two pumps 6, trapped fluid through No. two check valves 02,
The first non-mobile water washing trough 2 is flowed back to, polishing fluid wastewater collection system operating process is completed.
After the polishing fluid of first non-mobile water washing trough 2 retention is pumped into reactor tank, by experimental result 3, liquefied ammonia is added, recycles phosphorus
Sour aluminium and N-P compound fertilizer.
The method that recycling compound fertilizer is configured using aluminium industry polished and cleaned Sewage treatment compound fertilizer's method and system, including with
Lower step:
Polish waste water retention: aluminium alloy successively passes through polishing trough 1, the first non-mobile water washing trough 2, the second non-mobile water washing trough
3 and high-pressure atomization spray groove 4, the polishing fluid that aluminium alloy carries is by the first non-mobile water washing trough 2,3 and of the second non-mobile water washing trough
High-pressure atomization spray groove 4 retains, and after water level decreasing in the second non-mobile water washing trough 3, is mended by the spent shower water in holding vessel 5
Foot；
Polishing waste water: the tank liquor density in the first non-mobile water washing trough 2 of detection is collected, when density reaches 1.25-1.31g/
cm3When, the tank liquor for collecting the first non-mobile water washing trough 2 enters reactor tank 101, as polishing waste water, and polishing includes phosphorus in waste water
Acid ion, nitrate ion and sulfate ion；
Aluminum phosphate and liquid N-P compound fertilizer recycle: No. five 102 startings of pump make circulation in the liquid tank in reactor tank 101,
Liquefied ammonia is added into waste water for ammonia tank 103, until pH value 6.5-7.5, is stirred to react, cooling, No. five pumps 102 will be in reactor tank 101
Solidliquid mixture be pumped into filter press 104 and make to be separated by solid-liquid separation, solid is aluminum phosphate and nickel phosphate, and liquid goes out from filter press 104
It is liquid N-P compound fertilizer that mouth, which enters 201 withdrawal liquid of recycling can,.
The production temperature of first flowing rinsing bowl is controlled at≤50 DEG C.
Liquefied ammonia is added using into polishing waste liquid, aluminum phosphate and liquid N-P compound fertilizer is obtained, turns waste into wealth, liquid waste processing
It is at low cost, it solves and polishes that phosphorous in waste liquid and nickel Solid state fermentation expense is high and environmentally friendly at high cost asks in the prior art
Topic.
This method is further comprising the steps of:
The liquid N-P compound fertilizer of recycling is subjected to condensing crystallizing, crystal drying grinding is obtained into liquid containing ammonium sulfate-ammonium phosphate-
The N-P compound fertilizer of ammonium nitrate.
This method further includes preparing granular organic-inorganic composite fertilizer step:
Organic waste residues and waste residue containing zymophyte are added in the liquid N-P compound fertilizer of recycling, fermentation cures, and being made granular has
Machine-inorganic composite fertilizer, moisture content≤10% of organic waste residues.
In view of liquid N-P compound fertilizer condensing crystallizing higher cost, being absorbed water and being added using organic waste residues contains zymophyte
Waste residue produces granular organic-inorganic composite fertilizer, has not only eliminated the energy consumption and environmentally friendly cost of condensing crystallizing, but also has opened up organic waste residues
Purposes, also solve the problem of compound fertilizer from caking and soil hardening, be to achieve many things at one stroke.
In preparing granular organic-inorganic composite fertilizer step, waste residue containing zymophyte is first added in liquid N-P compound fertilizer,
Organic waste residues are then gradually adding, uniformly mixed mixture is aerated fermentation, until mixture hair black hair is black whole to cure
Point obtains granular organic-inorganic composite fertilizer；
The additive amount of organic waste residues is not until mixture drips.By being set to organic waste residues additive amount and curing terminal
Surely it can reduce technology difficulty.
1, setting polishing fluid waste water retains for the first time, is responsible for retention by two non-mobile water washing troughs and high-pressure atomization spray groove, stays
It is stored in spare in two non-mobile water washing troughs and holding vessel.When production polishing aluminium, rinsing bowl retains polishing fluid, concentrates individually place
Reason, avoid with other mixed with water after reprocess the troubles of these magnanimity waste water, be greatly reduced and handle phosphorous and ammonia nitrogen waste water
Environmentally friendly cost, the discharge of nickeliferous solid dangerous waste is greatly decreased；
2, high-pressure atomization spray groove is used in the retention of polishing fluid waste water for the first time, reduces devil liquor recovery amount.By Fig. 1, tradition
When mode produces polishing aluminium, configuration 2#, 3# and 4# flow rinsing bowl after 1# polishing trough, and tap water goes out from 4# slot into, 2# slot, instead
To series connection, ton material consumes 3 tons of water or more；It polishes waste liquid direct emission and is formed solid into waste water center with nickel-containing waste water mixed processing
Body dangerous waste.The present invention uses spraying method for the first time, and remaining slurry is recycled, and is greatly reduced with water, reduction devil liquor recovery amount, reduction
Pressure recovery has established solid foundation for online individually processing polishing waste water, device miniaturization；
3, for the first time online setting polishing fluid wastewater collection system, the first non-mobile water washing trough 2, the second non-mobile water washing trough 3,
It is spare into reactor tank to be responsible for the polishing fluid waste water that step collection polishing trough 1 is taken out of for high-pressure atomization spray groove 4.It is not flowed by first
Rinsing bowl 2, the second non-mobile water washing trough 3, high-pressure atomization spray groove 4 configure, and the front is high and the back is low for the acid concentration in polishing fluid waste water, are in
Terraced distribution recycles the polishing fluid of retention step by step；
4, setting aluminum phosphate recovery system, the aluminium being responsible in recycling polishing fluid waste water, reaction generate aluminum phosphate online for the first time,
It realizes and is separated by solid-liquid separation；
5, N-P compound fertilizer recovery system is set for the first time, is responsible for the supernatant in recycling being pumped into filter process, dispense
Compound fertilizer's solution；The sediment for recycling pot bottom is pumped into reactor tank again, carries out secondary recovery；
6, liquefied ammonia being added in polishing waste water for the first time, recycles Al3+ with liquefied ammonia, reaction generates aluminum phosphate and nickel phosphate, and
Confirmation pH value is reaction end when reaching 6.5-7.5, is separated by solid-liquid separation, obtains aluminum phosphate and liquid N-P compound fertilizer；
7, the moisture in liquid N-P compound fertilizer is absorbed using bagasse (moisture content≤10%) for the first time, solid-liquid is mixed
Organic-inorganic composite fertilizer.By the liquid N-P compound fertilizer that the present invention recycles, containing 50% or more moisture, condensing crystallizing both consumed energy,
Again not environmentally, also increase cost.It is largely refined sugar waste residue using sugarcane producing region, is properly added fresh and dried vinasse, introduce yeast, mixing
The liquid N-P compound fertilizer that the present invention recycles, produce organic-inorganic composite fertilizer, both eliminated condensing crystallizing energy consumption and environmental protection at
This, and the purposes of bagasse (moisture content≤10%) has been opened up, the problem of compound fertilizer from caking and soil hardening is also solved, is
It achieves many things at one stroke；
8, the moisture in liquid N-P compound fertilizer is absorbed using stalk slag (moisture content≤10%) for the first time, solid-liquid is mixed
Organic-inorganic composite fertilizer.By the liquid N-P compound fertilizer that the present invention recycles, containing 50% or more moisture, condensing crystallizing both consumed energy,
Again not environmentally, also increase cost.Using a large amount of stalk waste residue in corn producing region, fresh and dried vinasse are properly added, introduce yeast, mixing
The liquid N-P compound fertilizer that the present invention recycles, produce organic-inorganic composite fertilizer, both eliminated condensing crystallizing energy consumption and environmental protection at
This, and the purposes of stalk slag (moisture content≤10%) has been opened up, the problem of compound fertilizer from caking and soil hardening is also solved, is
It achieves many things at one stroke；
9, the moisture in liquid N-P compound fertilizer is absorbed using powdered rice hulls (moisture content≤10%) for the first time, solid-liquid is mixed
Organic-inorganic composite fertilizer.By the liquid N-P compound fertilizer that the present invention recycles, containing 50% or more moisture, condensing crystallizing both consumed energy,
Again not environmentally, also increase cost.Using a large amount of powdered rice hulls in rice producing region (moisture content≤10%), fresh and dried vinasse are properly added,
Yeast is introduced, the liquid N-P compound fertilizer that the mixing present invention recycles produces organic-inorganic composite fertilizer, both eliminates condensing crystallizing
Energy consumption and environmentally friendly cost, and the purposes of powdered rice hulls (moisture content≤10%) has been opened up, also solve compound fertilizer from caking and soil plate
The problem of knot is to achieve many things at one stroke.
The method that Aluminum subtracts the polishing fluid recycling compound fertilizer of slag is related to a large amount of phosphorus-containing waste slags one of aluminium processing industry generation and comes greatly
Source, i.e. aluminium alloy polish acid pickle.Such spent acid is very big in some amount of area, such as Foshan, year consumption polishing acid about 20
Ten thousand tons, 60,000 tons of sulfur acid, 30,000 tons of phosphatase 11 and 10,000 tons of nitric acid account for about the half of 400,000 tons of national dosage.Handle these polishings
Spent acid, the whole nation is annual to generate 1,000,000 tons of phosphorus-containing waste slag or more, while consuming about 50,000,000 tons and using water.It is useless to handle these waste water
Slag, while also wasting valuable phosphor resource.For this extensive production method there is an urgent need to improve, twice will be arranged not in the present invention
Flowing washing entrapping tank and high-pressure atomization spray groove actively retain polishing fluid, and online recycling contains phosphorus product, turns waste into wealth, and realize
Dangerous waste resource utilization.
Below by way of the specific embodiment aluminium industry polished and cleaned Sewage treatment compound fertilizer method that the present invention is further explained
With the method for system configuration recycling compound fertilizer.
1 aluminum phosphate of embodiment and liquid N-P compound fertilizer recycle.
Polish waste water retention: after aluminium alloy polishes 20s-120s into polishing trough 1, drip 20s；Aluminium alloy enters first and does not flow
Dynamic rinsing bowl 2, cleans 60s, drip 30s, and the first flowing rinsing bowl 2 is provided with cooling pipe 8, the first flowing rinsing bowl 2
Production temperature control at≤50 DEG C；Later, aluminium alloy enters the second non-mobile water washing trough 3, cleans 60s, drip 30s；Again into
Enter high-pressure atomization spray groove 4, spray 30 s, shower water flows into holding vessel 5；Complete the retention of polishing fluid waste water；When the first circulating water
After water level decreasing in washing trough 2, supplied by the water in the second non-mobile water washing trough 3；Water level in the second non-mobile water washing trough 3
After decline, supplied by the spent shower water in the fluid reservoir 5 that is connected to high-pressure atomization spray groove 4；
Polish wastewater collection: the tank liquor density in the first non-mobile water washing trough 2 of detection, when density reaches 1.25-1.31g/
cm3When, the tank liquor of the first non-mobile water washing trough 2 is collected, as polishing waste water, polishing includes phosphate anion, nitric acid in waste water
Radical ion, sulfate ion and nickel ion；Wherein, preferably when the 2 liquid density of slot of the first non-mobile water washing trough reaches 1.29-
1.31g/cm3When collect tank liquor, it is further preferred that the tank liquor density of the first non-mobile water washing trough 2 reaches 1.30g/cm3When receive
Collect tank liquor；
Phosphoric acid alum recovery: opening 011 valve of ride on Bus No. 11 and ten No. three valves 013, closes ten No. four valves 014；Open No. five pumps
102, by 105 circular response tank 101 of circulating line to reaction solution；No. four pumps 302 are opened, cooling tower 301 is started, it is cooling
Circulating line 303 cools down reaction solution；The electric blender in reactor tank 101 is opened, ten No. two valves 012 are opened, in ammonia tank 103
Liquefied ammonia is slowly added to, and reaction generates the ammonium salt of mixed acid；Side liquid feeding ammonia frontier inspection surveys pH value, as pH value >=6.5-7.5, stops adding
Medicine continues to stir 30min；Cooling reaction solution is to 40 DEG C or less；Filter press 104 is opened, ten No. four valves 014 are opened, closes 13
Number valve 013 is separated by solid-liquid separation, and solid phosphoric acid aluminium and nickel phosphate are recycled after rinsing, and the filtrate of filter press 104 flows into recycling can 201；It is complete
It is operated at aluminum phosphate recovery system；
The recycling of liquid N-P compound fertilizer: filtrate opens ten No. seven valves 017 after recycling can 201 precipitates 2 hours, opens No. seven
Pump 202, is pumped into filter 203 for the supernatant in recycling can 201 and filters, and dispenses, obtains liquid N-P compound fertilizer；Close No. seven pumps
202, ten No. seven valves 017 open ten No. five valve 015 and ten No. six valves 016, No. six pumps 204, electricity stirring 2 are opened, by recycling can
The sediment of 201 bottoms is pumped into reactor tank 101 again, carries out secondary recovery, completes the operation of N-P compound fertilizer recovery system.
2 liquid N-P compound fertilizer condensing crystallizing separating liquid of embodiment generates N-P compound fertilizer.
Example 1 reaches 1.29-1.31g/cm in the tank liquor density when the first non-mobile water washing trough3When collect tank liquor with
And under conditions of pH value reaches 6.5-7.5 stopping dosing, the liquid N-P compound fertilizer 1000g of acquisition.Condensing crystallizing, drying, grinds
Mill, obtains 453g liquid containing ammonium sulfate-ammonium phosphate-ammonium nitrate N-P compound fertilizer, and solid content is 45.3% in liquid N-P compound fertilizer,
Water content is 54.7%.
3 liquid N-P compound fertilizer of embodiment mixes with bagasse (moisture content≤10%), produces granular organic-inorganic compounding
Fertilizer.
Example 1 reaches 1.29-1.31g/cm in the tank liquor density when the first non-mobile water washing trough3When collect tank liquor with
And under conditions of pH value reaches 6.5-7.5 stopping dosing, the liquid N-P compound fertilizer 1000g that the moisture content of acquisition is 54.7%,
Fresh and dried vinasse 10g is added, is gradually added dry powdery bagasse (moisture content≤10%), until not dripping, bagasse (contains
Water rate≤10%) dosage be 250g, finished product be granular organic-inorganic composite fertilizer；Plant area is made compost being equipped with ventilation equipment, is fermented
It makes compost within 60 days, it is black for curing terminal that black hair is sent out by compound fertilizer；
4 liquid N-P compound fertilizer of embodiment mixes with stalk slag (moisture content≤10%), produces granular organic-inorganic compounding
Fertilizer.
Example 1 reaches 1.29-1.31g/cm in the tank liquor density when the first non-mobile water washing trough3When collect tank liquor with
And under conditions of pH value reaches 6.5-7.5 stopping dosing, the liquid N-P compound fertilizer 1000g that the moisture content of acquisition is 54.7%,
Fresh and dried vinasse 10g is added, is gradually added dry powdery stalk slag (moisture content≤10%), until not dripping, stalk slag (contains
Water rate≤10%) dosage be 280g, finished product be granular organic-inorganic composite fertilizer；Plant area is made compost being equipped with ventilation equipment, is fermented
It makes compost within 60 days, it is black for curing terminal that black hair is sent out by compound fertilizer；
(moisture content≤10% mixes 5 liquid N-P compound fertilizer of embodiment, produces granular Organic-inorganic composite with powdered rice hulls
Fertilizer.
Example 1 reaches 1.29-1.31g/cm in the tank liquor density when the first non-mobile water washing trough3When collect tank liquor with
And under conditions of pH value reaches 6.5-7.5 stopping dosing, the liquid N-P compound fertilizer 1000g that the moisture content of acquisition is 54.7%,
Fresh and dried vinasse 10g is added, dry powdered rice hulls (moisture content≤10%), until not dripping, powdered rice hulls (moisture content are gradually added
≤ 10%) dosage is 340g, and finished product is granular organic-inorganic composite fertilizer；Plant area is made compost being equipped with ventilation equipment, is fermented 60 days
It makes compost, it is black for curing terminal that black hair is sent out by compound fertilizer.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (10)
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Effective date of registration: 20260424 Address after: 313200 Room 337, Building 3, No. 266, Zhenxing Road, Yuyue Town, Deqing County, Huzhou City, Zhejiang Province Patentee after: Huzhou Chuangguan Technology Co.,Ltd. Country or region after: China Address before: 528131 "National Torch Plan Foshan Electronics and Electrical Industry Base" North District 77, Baini Town, Sanshui District, Foshan City, Guangdong Province Patentee before: FOSHAN SANSHUI XIONGYING INNOVATION CENTER FOR ALUMINUM SURFACE TECHNNOLOGIES Co.,Ltd. Country or region before: China |