CN106830297A - A kind of light particle system and method for sewage disposal - Google Patents
A kind of light particle system and method for sewage disposal Download PDFInfo
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- CN106830297A CN106830297A CN201710199429.1A CN201710199429A CN106830297A CN 106830297 A CN106830297 A CN 106830297A CN 201710199429 A CN201710199429 A CN 201710199429A CN 106830297 A CN106830297 A CN 106830297A
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- 239000002245 particle Substances 0.000 title claims abstract description 154
- 239000010865 sewage Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000012071 phase Substances 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 239000007791 liquid phase Substances 0.000 claims abstract description 39
- 244000005700 microbiome Species 0.000 claims abstract description 32
- 239000007787 solid Substances 0.000 claims abstract description 25
- 239000007790 solid phase Substances 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 77
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 230000001788 irregular Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 239000010802 sludge Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 29
- 239000002351 wastewater Substances 0.000 description 22
- 238000005273 aeration Methods 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 10
- 229910052698 phosphorus Inorganic materials 0.000 description 10
- 239000011574 phosphorus Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 8
- 238000005243 fluidization Methods 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 239000010985 leather Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
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- 206010021143 Hypoxia Diseases 0.000 description 3
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- -1 it can be seen that Substances 0.000 description 3
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- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011953 bioanalysis Methods 0.000 description 2
- 238000005842 biochemical reaction Methods 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
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- 206010064571 Gene mutation Diseases 0.000 description 1
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- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
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- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
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- 230000002708 enhancing effect Effects 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
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- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
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- 230000026676 system process Effects 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/104—Granular carriers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The present invention proposes a kind of light particle system and method for sewage disposal, including contactor, include gas-liquid-solid three-phase area in the contactor, the gas-liquid-solid three-phase area includes gas phase, liquid phase and solid phase, the liquid phase is continuous phase, the solid phase is light particle, and the light particle at least can carry microorganism by its surface, and the density of the light particle is less than the density of liquid phase.Light particle system of the invention is applied to sewage disposal can not only make microorganism concn be greatly improved, anti impulsion load strengthens, excess sludge production is small, without sludge bulking, and can more reducing energy consumption by way of gas-liquid collective effect causes that light particle suspends.Therefore the characteristics of system has efficiency high, energy consumption is low.
Description
Technical field
The invention belongs to sewage treatment area, more particularly, to a kind of light particle system for sewage disposal.
Background technology
With the growth and expanding economy of population, China can be increasing to the demand of water resource, wastewater discharge
Increase therewith, the Situation of water resources that these cause China is precarious.At present, increasing enterprise starts with green skill
Art, reduces waste and produces as far as possible, and with this come quality of increasing water quality, but its effect is too obvious not yet.In order that obtain water resource can
Sustainable development, it is necessary to which the waste water to discharging is processed, available water is changed into by waste water, it can be seen that, wastewater processing technology is
Very important, wastewater processing technology on the spot especially now is very little, it is impossible to so that waste water is timely and effectively processed, so that
Obtain water pollution increasingly to increase weight, water quality is gradually reduced.
Waste water is mainly derived from sanitary wastewater, industrial wastewater, livestock and poultry farm waste water and agricultural effluent etc., waste water it is main
Index is COD (COD), biochemical oxygen demand (BOD) (BOD), ammonia nitrogen and total phosphorus etc., wherein containing water plant can be promoted to give birth to
Various nutriments long, the pathogen microorganism that can be caused a disease and be potentially carcinogenic or gene mutation toxic compounds, therefore,
From protection human health and environmental protection angle, before waste water is re-used or is directly discharged into environment, it is necessary to which it is entered
Row treatment.The method for processing waste water has a lot, and Physical, chemical method, physical-chemical process, bioanalysis can be divided into by its action principle
Four kinds, these methods can be simultaneously used during treatment waste water, wherein bioanalysis is most economical effective processing method, thus extensive
Using.
Fluidization of solid technology is a kind of new sewage treatment process, and it is by traditional activated sludge process and biomembrance process
Chemical industry fluidization technology is organically combined and introduces, the features such as with high load capacity, high efficiency.Attached microbial on solid particle, leads to
Crossing fluidised form means makes solid particle be suspended in sewerage, is because there is particle larger specific surface area can effectively improve
The concentration of microorganism in system, so as to improve water treatment efficiency, sludge yield is low in whole system, and organic loading is high.In fluidization
In, the selection of solid particle is one of key factor of influence sewage treating efficiency, traditional fluidization of solid system one
As heavy particle from density more than water as solid phase, the fluidisation to maintain weight particle needs to consume more energy, liquid
Reflux ratio is big.Therefore need to find suitable solid particle now and be applied in fluidization sewage disposal, so as to save energy.
The content of the invention
In view of this, the present invention is directed to propose a kind of light particle system for sewage disposal, to overcome prior art
It is not enough.Gas is passed through in sewage disposal system, declines the mean specific gravity of gas-liquid mixture fluid, when the average specific of fluid-mixing
When weight is close with light particle or suitable, a little agitation of gas flowing, you can make light particle be dispersed in liquid phase, beneficial to gas-liquid
Gu three-phase is fully contacted, and saves energy consumption.
To reach above-mentioned purpose, the invention discloses following technical scheme：
A kind of light particle system for sewage disposal, it is characterised in that：Including contactor, gas is included in the contactor
The solid threephase region of liquid, the gas-liquid-solid three-phase area includes gas phase, liquid phase and solid phase, and the liquid phase is continuous phase, and the solid phase is light
Particle, the light particle at least can carry microorganism by its surface, and the density of the light particle is less than the density of liquid phase.
Relative to prior art, the present invention has the advantage that：Gas is passed through in the liquid phase, by reducing biphase gas and liquid flow
The hybrid density of body, makes light particle disperse in the liquid phase, the larger specific surface area of light particle, for microorganism attachment provides enough
Space, is conducive to microorganism fully and waste water, promotes the carrying out of biochemical reaction.The light particle system that it contains is applied to dirt
Water process can not only make microorganism concn be greatly improved, and anti impulsion load enhancing, excess sludge production is small, without sludge
Expansion, and can more reducing energy consumption by way of gas-liquid collective effect causes that light particle suspends.Therefore the system has
The characteristics of effective percentage is high, energy consumption is low.
Brief description of the drawings
Fig. 1 is light particle suspension system structural representation of the invention；
Fig. 2-Fig. 4 is light particle sewage disposal system schematic diagram of the invention.
Specific embodiment
In order to be better understood from this box-cage type distribution of particles mini system, the device is illustrated with reference to embodiment.
In one embodiment, the invention discloses a kind of light particle system for sewage disposal, including contactor, institute
Stating includes gas-liquid-solid three-phase area in contactor, the gas-liquid-solid three-phase area includes gas phase, liquid phase and solid phase, and the liquid phase is continuous
Phase, the solid phase is light particle, and the light particle at least can carry microorganism by its surface, and the density of the light particle is small
In the density of liquid phase.
It is readily appreciated that, when the system is used for sewage disposal, the contactor is acted on the light particle suspension system
Sewage exist contact, to implement sewage disposal.For the embodiment, its creativeness combines gas-liquid-solid three-phase
It is fully contacted, light particle easily suspends in the liquid phase and light particle can carry microorganism this three at least through its surface
The characteristics of so that：When system is used for sewage disposal, the larger specific surface area of particle provides enough skies for microorganism attachment
Between, due to microorganism suspended particulate medium superficial growth with come off, constantly update, microorganism in system can be effectively improved
Concentration, so as to be easy to that metabolic degradation reaction is carried out to organic pollution, and/or nitration denitrification reaction is carried out to ammonia nitrogen,
And/or phosphorus is carried out discharging phosphorus and the reaction of phosphorus is absorbed, so as to improve sewage treating efficiency.Additionally, the embodiment can basis
The characteristics of specific sewage, corresponding selection microorganism.
Gas or liquid (both be readily appreciated that, or gas and liquid have), system are passed through in said system
Interior light particle is in the presence of liquid or gas-liquid mixed phase fluid, it is easier in fluidization, so as to be dispersed in system
In.Adjoint with this, the microorganism that particle overlying is carried is as the motion migration everywhere of particle is so as to process the sewage of surrounding.Easily
Understand, gas or liquid herein are mainly used to so that the particle flow, the liquid can be pending sewage,
Can be other liquid outside pending sewage, as long as the liquid without prejudice to or not being unfavorable for sewage disposal.
If content of microorganisms is higher and system is more easily controlled, then easier raising system processes the ability of sewage.
Additionally, for the density of light particle, the light particle is too big with the Liquid density difference under equal volume, need
Power that will be bigger can just overcome light particle buoyancy in itself, and energy consumption is excessive, and the density of light particle is got over the density of liquid phase and connect
Closely, it is easier to be suspended in the liquid phase.In view of this point that inventor is had found, the size of described light particle greatly can may be used
Small, the material and shape of particle are of all kinds, and such as polyethylene, polypropylene, the polystyrene of foaming, hollow glass ball are not arranged
Except other particles, preferably specific surface area is big, and shape is similar to spherical, and density leads fluid good particle close to liquid, is applied to
Then selection surface is adapted to the particle of growth of microorganism as far as possible during sewage disposal.
More particularly, the light particle can also include one or more micropores, in advance or in sewage disposal process
Enriched microorganism in micropore.Further, the light particle can also while including micropore, including one or more with
The cavity of microporous connectivity, cavity inside preconcentration microorganism, and by micropore and waste water, biography in sewage disposal process
Matter.The microorganism can be enrichment when processing carried in advance by particle before sewage, or treatment sewage, carry from dirty
Itself is present in water.
Further, in another embodiment, suspended state, fluid in system are in the particle in maintenance system
Speed need to be more than particle minimum fluidization velocity and less than the minimum carrying velocity of particle.The minimum carrying velocity of particle herein
The speed that to be bed changed from fluid bed to conveying bed.
In another embodiment, the environment of the contactor is anaerobic environment, anaerobic environment or aerobic environment.Different
Different pollutants can be processed under environment.If anaerobic environment, anaerobic environment can be combined, and aerobic environment, then
The system can be applied in the environment of various combination.
In another embodiment, Ye Gu areas are also included in the contactor, the Ye Gu areas include liquid phase and solid phase.By
The situation without gas phase occurs in gas liquid particle three phase system may be faced, in this embodiment, the contactor also includes liquid
Gu Qu.Particularly when sewage disposal is directed to anaerobic environment and/or anoxic ring mirror, or the gas is not without interruption, and
It is to use intermittent aerating or be not aerated, then with reference to the foregoing embodiments, the solid phase in Ye Gu areas equally may be used described in the embodiment
Think light particle, light particle outer surface is equally loaded with microorganism herein, to be similarly less than the liquid phase close for the density of light particle herein
Degree.
In another embodiment, the gas phase given either continuously or intermittently flows from bottom to top.For the embodiment, this
So that gas phase and the mixed fluid density reduction of liquid phase, so that the light particle is scattered in the liquid phase as far as possible.Gently
Particle is scattered in the liquid phase, is conducive to microorganism fully and waste water, promotes the carrying out of biochemical reaction.Gas phase it is continuous or
It is passed through in system off and on, can be aerated according to the aerobic situation of sewage disposal system, save energy consumption, improves reaction efficiency.
Further, in a kind of described light particle system for sewage disposal, the density of the light particle is more than
Equal to the density of liquid phase 80% and less than the density of liquid phase.If the density of light particle is less than the density of liquid phase
80%, the light particle is excessive with the Liquid density difference, it is necessary to bigger power can just overcome light particle sheet under equal volume
The buoyancy of body, energy consumption is excessive, and the density of light particle is with the density of liquid phase closer to easier to be suspended in the liquid phase.Such as
Fruit does not mind energy consumption, then the density of light particle can relax requirement herein.
Preferably, volume fraction of the volume of light particle in the gas-liquid-solid three-phase area is first-selected is less than or equal to 30%, if
Addition grain amount is more, and relative, the volume fraction shared by gas-liquid two-phase can also be reduced, and particle is less susceptible to be suspended completely,
Be unfavorable for gas-liquid-solid three-phase be fully contacted, mass transfer.In other cases, the reduction of gas-liquid two-phase volume fraction can cause not have
Enough gas, liquid are contacted with particle, influence three alternate mass-transfer efficiencies.
More excellent, in another embodiment：In the gas-liquid-solid three-phase area, the volume fraction of the gas phase less than etc.
In 25%.If described gaseous phase volume point rate is excessive, gas phase is overcome to account for very big energy consumption to the drag force of solid phase particles, in addition bubble
Easily coalescence forms air pocket in system, particle dispersion inequality is easily caused, so as to influence three-phase haptoreaction efficiency.
Selectable, any position among the gas-liquid-solid three-phase area all can be set one or more gas distributors,
The arrangement in a device of described gas distributor is varied, and gas distributor is preferably arranged on the bottom of threephase region, institute
Gas distributor is stated for uniform gas distribution.
In another embodiment, the gas distributor for being arranged on threephase region bottom, can be on system cross section
It is uniformly distributed, it is also possible to which concentrated setting is in one or more transverse cross-sectional area.When multiple gas distributors are in system
When being uniformly distributed arrangement on cross section, the air-flow of uniform rising can be formed, be conducive to freely suspending for light particle；When described many
Individual distributor concentrated setting can drive described gas phase preferentially to pass through from the region from bottom to top when some regions, so that
Promote the gas to form concentration of local to rise, cause more liquid in other zone flows downwards, so that it is light more effectively to suspend
Particle.
In another embodiment, the gas distributor being arranged in threephase region, can be in one or more phase
In same cross-section location, the vertical arrangement up and down of two or more distributors is formed along system altitude.Gas distributor is along system
This mode of system high perpendicular arrangement causes described gas phase preferentially to pass through from the region from bottom to top, to be formed so as to promote
The gas of concentration of local rises, and causes more liquid in other zone flows downwards, so that the light particle that more effectively suspends.
In another embodiment, described gas phase flows from bottom to top, it is some or all of by system it is built-in or
External pipeline is completed, and the pipeline preferred vertical is set or main body is vertically disposed pipeline.Built-in pipe can be
Totally enclosed type and closed, full open model pipeline.Either built-in pipe is not external pipeline in addition, and gas distributor can set
Put near lower end of duct or be dispensed directly onto in pipeline, so may be such that bubble upwards motion during drive pipeline in or
The liquid flows upwards of surrounding, so that liquid is in other zone flows downwards, more effectively suspend light particle.Described gas point
Cloth device can be poorly efficient gas distributor or efficient gas distributor, the preferred heavy duty detergent under aerobic environment, such as pore type gas point
Cloth device, so can just be such that bubble is evenly distributed in reaction zone, allow particle preferably to suspend, and can also improve dissolved oxygen amount.And lacking
Then preferably poorly efficient type, such as pipe distributor in oxygen or anaerobic environment, could so induce the generation of air pocket, so as to strengthen liquid
Self-loopa amount, can also reduce dissolved oxygen amount.
In another embodiment, in a kind of described light particle system for sewage disposal, the contactor
Shape can be regular housing or irregular housing, it is preferred that regular housing is rectangular housing, the upper end of described rectangular housing
Face is totally-enclosed, partially enclosed or all open.It is readily appreciated that, the contactor can freely be selected with the demand of concrete application scene
Select convenient shape.
Further, in a kind of described light particle system for sewage disposal, it is additionally provided with the contactor micro-
Passage, if the microchannel includes dried layer filler, every layer of described filler includes some channel units, every layer of the channel unit
It is staggered.Preferably, the microchannel is arranged on the bottom of contactor.These microchannels can make fluid enter gas-liquid-solid three-phase
Uniformly it is distributed before system, is conducive to contact, the mass transfer between follow-up each phase.
Further, the channel unit is cube shaped passage, cuboid passage, or other types of passage.It is right
For the embodiment, there is disclosed the specific type selecting of channel unit, in principle, the passage of regular shape, such as it is cube shaped or
Cuboid, can be as preferred passage type selecting, and this advantageously reduces unnecessary energy consumption in distributed process.
Additionally, in another embodiment, sewage is processed using the light particle system the invention also discloses a kind of
Method, sewage is passed through in the light particle system, and the sewage after treatment is discharged from the light particle system.Rely on the method,
Water circulation system can continuously process sewage.
In another embodiment, the flow of light particle sewage disposal can be as follows with detailed example：Filled in sewage system
There are certain volume, light particle system that is previously described, being loaded with microorganism, sewage is from the top of system or bottom interval or connects
It is flowed into system continuously, gas is passed through from the bottom of device, by entering in system after aerator, with adding for gas velocity
Greatly so that the averag density of air-liquid fluid-mixing declines, and is close or equal to when the averag density of air-liquid fluid-mixing is reduced to
During density (or sewage density under specific situation) of liquid phase water, the disturbance somewhat of gas or liquid just can make superposed light
Particle is fluidized downwards.Suitable gas velocity is further increased to, the light particle in system is under the collective effect of air-liquid fluid
It is evenly dispersed in system, in the process, the microorganism on attachment solid is processed sewage, and the water for having processed is from being
Discharged in system.Preferably, in order to improve hydraulic detention time, the self-circulating device of water can be additionally set in system.
Further, using multiple light particle systems, wherein, any one of light particle system and at least one
Liquid communication pipeline is provided between other light particle systems.For the embodiment, multiple light particle systems make jointly
With the ability of sewage disposal can be strengthened.Additionally, when multiple light particle systems are used in conjunction with, the ring of the contactor
Border can be anaerobic environment, anaerobic environment or aerobic environment or its combination.
In another embodiment, in the light particle system, the light particle is given either continuously or intermittently added and taken
Go out.For the embodiment, light particle is given either continuously or intermittently added in the system and given either continuously or intermittently from this light
Taken out in grain system, it is easy to circulate particle.If the light particle is continuously added in the system, and from the system
It is continuously withdrawn, is so conducive to the recycling of the solid phase particles, is easy to industrial continuous production；If the light particle is off and on
It is added in the system and is intermittently taken out from the system, so can be used for intermittent reaction and seldom change the change of solid phase
Work process.
Further, in another embodiment, in the light particle system, the liquid phase is given either continuously or intermittently added
Enter and take out, optionally, the liquid phase is added into from above the gas-liquid-solid three-phase area.
Further, when environment is anaerobic environment or anaerobic environment in the contactor, the gas phase intermittent aerating, when
In the contactor environment preferably oxygen environment when, the gas phase intermittent aerating or continuous aeration.According to biotic environment oxygen demand, lead to
Oxygen content in crossing different aeration modes and can efficiently controlling system, for the growth of microorganism provides optimal aerobic environment.
In another embodiment, as shown in figure 1, light particle suspension system of the invention includes gas-liquid-solid three-phase area, institute
The threephase region stated includes gas phase, liquid phase and solid phase.Liquid phase is handled sewage；Gas phase is air, and air is first for system is carried
For enough oxygen, second providing power makes particle sufficiently be mixed.
Light particle sewage disposal system schematic diagram of the invention is illustrated in figure 2, this device includes two contactors.Contact
Device 1 and contactor 2 are bio-reaction zone, and contactor 1 is anoxic zone, and its size is 0.5m × 1m × 6m (length × width × height),
Contactor 2 is aerobic zone, and its size is 1m × 1m × 6m (length × width × height).3 is high efficiency packing, and contactor 1 and contactor 2 are equal
Arrangement high efficiency packing layer, and contactor bottom is placed on, both can be also beneficial to gas distribution for microorganism provides attachment place
It is more uniform.There is aeration tube 4 in contactor lower disposed, aeration tube by the way of evenly distributed, lacks on system cross section
Aeration rate in oxygen area is less than aerobic zone, and the aeration tube quantity in contactor 2 is more than contactor 1, and the gas for being used is sky
Gas 6, aeration tube is pore type leather hose, 10 centimetres of leather hose bore.Light particle 5, light are added in contactor 1 and contactor 2
The density of grain is 930kg/m3, equivalent diameter is that 2.5mm (may also be diameter less than 5mm, density 800-1000kg/m3Between it is light
Particle).
Sewage 7 enters contactor 1, and aeration rate is smaller in contactor 1, the hypoxia responses such as denitrification occurs, to make contactor 1
Interior light particle fluidized state more preferably, add in the contactor 1 interior circulation be the bottom of contactor 1 extract part water through pipeline 10 to
Top, can so improve wastewater treatment efficiency in anoxic zone.By the waste water after the treatment of contactor 1 contactor 2 is flowed into through pipeline 8
Interior, aeration rate is larger in contactor 2, and aerobic reaction occurs, by the waste water of contactor 2 reach by corresponding discharge standard through
Pipeline 9 is discharged.
Sewage disposal experiment is carried out using the device, daily treating capacity is 70 tons, within the runtime, average COD of intaking
It is 250g/m3, average NH4- N is 30g/m3, total nitrogen is 36g/m3, total phosphorus is 1.8g/m3.During by the hydraulic retention of 2.0 hours
Between after, can remove 90%COD, 96% total nitrogen and 85% total phosphorus, water outlet reach《Water environment quality standard》(GB3838-
2002) IV classes water quality standard.
In another embodiment, light particle sewage disposal system schematic diagram of the invention is illustrated in figure 3, this device bag
Include two bio-reaction zones.Described two bio-reaction zones are respectively anoxic zone and aerobic zone.Complete equipment is carbon steel material steel
Plate is made, and anoxic zone effective dimensions is 1m × 1m × 5m (length × width × height), and aerobic zone effective dimensions is 2m × 1m × 5m, anoxic
Block board thickness between area and aerobic zone is 10mm, and the block board thickness in aerobic zone is 5mm, is highly 1.2m.Become reconciled anoxic zone
Light particle is added in oxygen area, the density of light particle is 950kg/m3, equivalent diameter is 3.0mm, and light particle outer surface can be taken
Band microorganism.
Gas distributor concentrated setting is in device bottom (may also be arranged on other level locations), gas point in anoxic zone
Portion's device preferably poorly efficient type distributor, such as pipe distributor, could so induce the generation of air pocket, promote to form concentration of local
Gas, drives neighbouring liquid to move upwards, causes more liquid in other zone flows downwards, so that it is light more effectively to suspend
Particle, and the fast mass-transfer efficiency of the air pocket rate of climb is low can also reduce dissolved oxygen amount, it is adaptable to anoxic zone.
System cross section upper spacer both sides are all uniformly arranged multiple gas distributors, the gas distribution of use in aerobic zone
Device is pore type leather hose, and leather hose bore 10cm, the bubble that this pore type leather hose aeration is produced is small, is aerated efficiency high, increases
Dissolved oxygen amount in system, beneficial to the growth and breeding of microorganism, and the increase of gas flow causes the flat of air-liquid fluid-mixing in system
Equal density declines, and effect of the gas to liquid causes to be more conducive to the disturbance of particle the suspension of light particle.
Sewage enters from the top of anoxic zone, and aeration rate is small in anoxic zone, the hypoxia responses such as denitrification occurs, to make anoxic
Light particle fluidized state more preferably, can be set the self-loopa of water in anoxic zone in area, can so improve sewage disposal in anoxic zone
Effect.Waste water after the treatment of anoxic zone flows into right side aerobic zone through the duct that bottom is connected, and aeration rate is larger in aerobic zone, occurs
Aerobic reaction, similar to anoxic zone in order to preferably fluidize light particle, aerobic zone may also set up the self-loopa of water, by aerobic zone
Waste water after treatment is discharged from the bottom of device by reaching corresponding discharge standard through increase in pipeline.
Sewage disposal experiment is carried out using the device, daily treating capacity is 150 tons, within the runtime, average COD of intaking
It is 260g/m3, average NH4- N is 30g/m3, total nitrogen is 38g/m3, total phosphorus is 1.7g/m3.During by the hydraulic retention of 2.0 hours
Between after, can remove 91%COD, 95% total nitrogen and 85% total phosphorus, water outlet reach《Water environment quality standard》(GB3838-
2002) IV classes water quality standard.
In another embodiment, light particle sewage disposal system schematic diagram of the invention is illustrated in figure 4, this device bag
Include two bio-reaction zones.Described two bio-reaction zones are respectively anoxic zone and aerobic zone.Complete equipment is carbon steel material steel
Plate is made, and anoxic zone effective dimensions is 1m × 1m × 8m (length × width × height), and aerobic zone effective dimensions is 1m × 2m × 8m.Anoxic
Light particle is added in area and aerobic zone, the density of light particle is 960kg/m3, equivalent diameter is 2.8mm, light particle appearance
Face can carry microorganism.
Gas distributor is arranged inside built-in pipe (may also set up external pipeline) in anoxic zone, and gas branch device is excellent
Poorly efficient type distributor, such as orifice-plate type distributor, gas is selected to form the air pocket of rising in a liquid, these air pockets are along pipeline
The liquid flows upwards in pipe are driven to reach the top of system during rising, so as to cause the liquid on system top along pipeline
Around flow downward so that the light particle that more effectively suspends, and the fast mass-transfer efficiency of the air pocket rate of climb is low can also reduce dissolved oxygen
Amount, it is adaptable to anoxic zone.
In aerobic zone, gas distributor is arranged in multiple different cross-section locations, and forms many along system altitude
The vertical arrangement up and down of individual distributor, specifically as shown in figure 4, the gas distributor for using is micro porous aeration head, this micropore
The bubble that aeration head is produced is small, is aerated efficiency high, dissolved oxygen amount that can be in increase system, beneficial to the growth and breeding of microorganism, and gas
On the one hand increasing for the scale of construction cause that the averag density of air-liquid fluid-mixing in system declines, work of the another aspect gas to liquid
With causing the disturbance to particle to increase, be conducive to the suspension of light particle.
Sewage enters from the top of anoxic zone, and aeration rate is small in anoxic zone, the hypoxia responses such as denitrification occurs, to make anoxic
Light particle fluidized state more preferably, can be set the self-loopa of water in anoxic zone in area, can so improve sewage disposal in anoxic zone
Effect.Waste water after the treatment of anoxic zone flows into right side aerobic zone through the duct that bottom is connected, and aeration rate is larger in aerobic zone, occurs
Aerobic reaction, similar to anoxic zone in order to preferably fluidize light particle, aerobic zone may also set up the self-loopa of water, by aerobic zone
Waste water after treatment is discharged from the bottom of device by reaching corresponding discharge standard through increase in pipeline.
Sewage disposal experiment is carried out using the device, daily treating capacity is 200 tons, within the runtime, average COD of intaking
It is 255g/m3, average NH4- N is 32g/m3, total nitrogen is 39g/m3, total phosphorus is 1.8g/m3.During by the hydraulic retention of 2.0 hours
Between after, can remove 90%COD, 93% total nitrogen and 84% total phosphorus, water outlet reach《Water environment quality standard》(GB3838-
2002) IV classes water quality standard.
To sum up, the invention provides a kind of light particle system for sewage disposal, sewage disposal is carried out using the system,
Microorganism concn can be effectively improved, high with treatment effeciency, consuming little energy, sludge yield is low, the advantages of organic loading is small.
The above, only presently preferred embodiments of the present invention is not intended to limit the invention, and each embodiment is using passing
The mode entered is described, and identical similar part is mutually referring to each embodiment is stressed between each embodiment
It is the difference with other embodiment.It is every any trickle to be repaiied to made for any of the above embodiments according to technical spirit of the invention
Change, equivalent and improvement should be included within the protection domain of technical solution of the present invention.
Claims (19)
1. a kind of light particle system for sewage disposal, it is characterised in that：Including contactor, gas-liquid is included in the contactor
Gu threephase region, the gas-liquid-solid three-phase area includes gas phase, liquid phase and solid phase, the liquid phase is continuous phase, and the solid phase is light
Grain, the light particle at least can carry microorganism by its surface, and the density of the light particle is less than the density of liquid phase.
2. a kind of light particle system for sewage disposal according to claim 1, it is characterised in that preferred, it is described
Also include Ye Gu areas in contactor, the Ye Gu areas include liquid phase and solid phase.
3. a kind of light particle system for sewage disposal according to claim 1, it is characterised in that：The contactor
Environment is anaerobic environment, anaerobic environment or aerobic environment.
4. a kind of light particle system for sewage disposal according to claim 1, it is characterised in that：The gas phase is continuous
Or flow from bottom to top off and on, the light particle is scattered in the liquid phase.
5. a kind of light particle system for sewage disposal according to claim 1, it is characterised in that：The light particle
Density is more than or equal to the 80% of the density of liquid phase and less than the density of liquid phase.
6. a kind of light particle system for sewage disposal according to claim 1, it is characterised in that：In the gas-liquid-solid
In threephase region, the volume fraction of the gas phase is less than or equal to 25%.
7. a kind of light particle system for sewage disposal according to claim 1, it is characterised in that：The contactor
Shape is regular housing or irregular housing, it is preferred that regular housing is rectangular housing, and the upper surface of the rectangular housing is sealed entirely
Close, partially enclosed or whole is opened.
8. a kind of light particle system for sewage disposal according to claim any one of 1-7, it is characterised in that：It is described
Microchannel is additionally provided with contactor, if the microchannel includes dried layer filler, every layer of described filler includes some channel units, often
The channel unit of layer is staggered, it is preferred that the microchannel is arranged on the bottom of contactor.
9. a kind of light particle system for sewage disposal according to claim 8, it is characterised in that：The channel unit
It is cube shaped passage, cuboid passage, or other types of passage.
10. a kind of light particle system for sewage disposal according to claim any one of 1-6, it is characterised in that：Institute
Gas phase is stated by being arranged on one or more gas distributors among the gas-liquid-solid three-phase area to add, preferably by gas point
Cloth device is arranged on the bottom of threephase region.
A kind of 11. light particle systems for sewage disposal according to claim 10, it is characterised in that：The gas point
Cloth device is uniformly distributed on system cross section or concentrated setting is in one or more transverse cross-sectional area；When the multiple distribution
Device concentrated setting can drive described gas phase preferentially to pass through from region this described from bottom to top when some regions.
A kind of 12. light particle systems for sewage disposal according to claim 10, it is characterised in that：The gas point
Cloth device is arranged in one or more identical cross-section location, and is upwardly formed two or more distributions along system altitude side
The vertical arrangement up and down of device, makes described gas phase preferentially pass through from the region from bottom to top.
A kind of 13. light particle systems for sewage disposal according to claim 10, it is characterised in that：Described gas phase
Flow from bottom to top, some or all of pipeline built-in or external by system is completed, and the pipeline preferred vertical sets
Put or main body is vertically disposed pipeline.
The method that light particle system described in a kind of 14. utilization claim any one of 1-13 processes sewage, it is characterised in that：Will
Sewage is passed through in the light particle system, and the sewage after treatment is discharged from the light particle system.
15. methods according to claim 14, it is characterised in that：Using multiple light particle systems, wherein, it is any one
Liquid communication pipeline is provided between the individual light particle system and at least one other light particle system.
16. method according to claims 14 or 15, it is characterised in that：In the light particle system, the light particle
Given either continuously or intermittently added and taken out.
17. method according to claims 14 or 15, it is characterised in that：In the light particle system, the liquid phase quilt
Given either continuously or intermittently add and take out.
18. method according to claims 14 or 15, it is characterised in that：Institute is added from the top in the gas-liquid-solid three-phase area
State liquid phase.
19. methods according to claim 14, it is characterised in that：When the environment in the contactor is anaerobic environment or is lacked
During oxygen environment, the gas phase is aerated off and on；When the environment in the contactor is aerobic environment, intermittently or continuously expose
Gas phase described in gas.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710199429.1A CN106830297A (en) | 2017-03-29 | 2017-03-29 | A kind of light particle system and method for sewage disposal |
| US15/940,568 US12121890B2 (en) | 2017-03-29 | 2018-03-29 | Light particle or mixed particle system for wastewater treatment |
| CA2999656A CA2999656A1 (en) | 2017-03-29 | 2018-03-29 | A light particle or mixed particle system for wastewater treatment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710199429.1A CN106830297A (en) | 2017-03-29 | 2017-03-29 | A kind of light particle system and method for sewage disposal |
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| CN106830297A true CN106830297A (en) | 2017-06-13 |
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ID=59142727
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| CN201710199429.1A Pending CN106830297A (en) | 2017-03-29 | 2017-03-29 | A kind of light particle system and method for sewage disposal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110681320A (en) * | 2019-11-26 | 2020-01-14 | 湖南工程学院 | Solid-liquid reaction device |
| CN118255454A (en) * | 2022-12-26 | 2024-06-28 | 西敦澄洋(绍兴)生态科技有限公司 | Functional particle enhanced sewage treatment device and method |
| WO2024164503A1 (en) * | 2023-02-06 | 2024-08-15 | 上海天誉环境科技工程有限公司 | Ultra-efficient hydrolytic acidification reactor and high-performance buoyancy stirring mechanism thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030028A (en) * | 1987-06-23 | 1989-01-04 | 东方冷却塔水处理技术开发中心 | Bio-chemical fluidized bed with floating granules |
| CN1730410A (en) * | 2004-08-08 | 2006-02-08 | 江苏鹏鹞环境工程技术研究中心有限公司 | Improved bioreactor |
| US20080053897A1 (en) * | 2000-10-02 | 2008-03-06 | Jingxu Zhu | Liquid-solid fluidized bed waste water treatment system for simultaneous carbon, nitrogen and phosphorous removal |
| CN101774691A (en) * | 2010-01-29 | 2010-07-14 | 北京理工大学 | Synchronous sludge decrement reactor used for treating organic wastewater in processing of agricultural products |
| CN101838045A (en) * | 2010-03-26 | 2010-09-22 | 北京建筑工程学院 | Biological sewage treatment equipment and process of internal recycle suspension padding |
| CN103910471A (en) * | 2014-04-09 | 2014-07-09 | 上海华业水处理工程有限公司 | Integrative composite structure of marine internal and external circulation three-phase biological fluidized beds |
| CN104030441A (en) * | 2014-06-18 | 2014-09-10 | 武汉东川自来水科技开发有限公司 | Horizontal type three-phase biological fluidized bed and sewage treatment method thereof |
| CN203999140U (en) * | 2014-07-29 | 2014-12-10 | 沭阳嘉净环保科技有限公司 | A kind of moving-bed type decentralized sewage treatment device |
| CN106186558A (en) * | 2016-08-29 | 2016-12-07 | 百诺纳米科技（苏州）有限公司 | A kind of nano bubble efficient oxygen supply suspending carrier flowing biological bed sewage disposal system |
-
2017
- 2017-03-29 CN CN201710199429.1A patent/CN106830297A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030028A (en) * | 1987-06-23 | 1989-01-04 | 东方冷却塔水处理技术开发中心 | Bio-chemical fluidized bed with floating granules |
| US20080053897A1 (en) * | 2000-10-02 | 2008-03-06 | Jingxu Zhu | Liquid-solid fluidized bed waste water treatment system for simultaneous carbon, nitrogen and phosphorous removal |
| CN1730410A (en) * | 2004-08-08 | 2006-02-08 | 江苏鹏鹞环境工程技术研究中心有限公司 | Improved bioreactor |
| CN101774691A (en) * | 2010-01-29 | 2010-07-14 | 北京理工大学 | Synchronous sludge decrement reactor used for treating organic wastewater in processing of agricultural products |
| CN101838045A (en) * | 2010-03-26 | 2010-09-22 | 北京建筑工程学院 | Biological sewage treatment equipment and process of internal recycle suspension padding |
| CN103910471A (en) * | 2014-04-09 | 2014-07-09 | 上海华业水处理工程有限公司 | Integrative composite structure of marine internal and external circulation three-phase biological fluidized beds |
| CN104030441A (en) * | 2014-06-18 | 2014-09-10 | 武汉东川自来水科技开发有限公司 | Horizontal type three-phase biological fluidized bed and sewage treatment method thereof |
| CN203999140U (en) * | 2014-07-29 | 2014-12-10 | 沭阳嘉净环保科技有限公司 | A kind of moving-bed type decentralized sewage treatment device |
| CN106186558A (en) * | 2016-08-29 | 2016-12-07 | 百诺纳米科技（苏州）有限公司 | A kind of nano bubble efficient oxygen supply suspending carrier flowing biological bed sewage disposal system |
Non-Patent Citations (1)
| Title |
|---|
| 刘转年等: "环保设备基础", 中国矿业大学出版社, pages: 171 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110681320A (en) * | 2019-11-26 | 2020-01-14 | 湖南工程学院 | Solid-liquid reaction device |
| CN118255454A (en) * | 2022-12-26 | 2024-06-28 | 西敦澄洋(绍兴)生态科技有限公司 | Functional particle enhanced sewage treatment device and method |
| WO2024164503A1 (en) * | 2023-02-06 | 2024-08-15 | 上海天誉环境科技工程有限公司 | Ultra-efficient hydrolytic acidification reactor and high-performance buoyancy stirring mechanism thereof |
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