CN201908024U - Waste water treatment device for coal gasification production by aid of Lurgi pressurized gasifier - Google Patents
Waste water treatment device for coal gasification production by aid of Lurgi pressurized gasifier Download PDFInfo
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- CN201908024U CN201908024U CN2010206792800U CN201020679280U CN201908024U CN 201908024 U CN201908024 U CN 201908024U CN 2010206792800 U CN2010206792800 U CN 2010206792800U CN 201020679280 U CN201020679280 U CN 201020679280U CN 201908024 U CN201908024 U CN 201908024U
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- Water Treatment By Sorption (AREA)
Abstract
The utility model provides a waste water treatment device for coal gasification production by the aid of a Lurgi pressurized gasifier. The waste water treatment device comprises an adjusting tank, a reaction sedimentation tank, a flotation tank, a multi-medium filter, an SBR (sequencing batch reactor) oxic aerobic tank, an anaerobic biochemical reaction tank, a deaminizing tower, an A/O (anaerobic/oxic aerobic) biochemical tank, an ozone contact reaction device, two to three biochemical advanced treatment units in sequential connection, a flocculation sedimentation tank, a quartz sand filter device and a fresh water tank which are sequentially communicated with each other via pipelines, the ozone contact reaction device comprises an ozone generator, a first water sprayer and a first ozone contact reaction tower, the first water sprayer is connected with the A/O biochemical tank via a pipeline, the first ozone contact reaction tower is connected with the biochemical advanced treatment units via pipelines, and each biochemical advanced treatment unit consists of a hydrolysis acidification tank and a biological contact oxidization tank which are sequentially connected. The waste water treatment device is wide in application range, fine in operational stability, high in pollutant removal efficiency and fine in quality of outlet water.
Description
Technical field
The utility model is about a kind of waste disposal plant; More particularly, about the regeneration and treatment technique of a kind of lurgi pressure gasifier or BGL slag gasification furnace gas maked coal factory effluent.
Background technology
Adopt BGL high-temperature slag vapourizing furnace (on the lurgi pressure gasifier basis, improving), utilize abundant lignite resource to produce methyl alcohol, transform dimethyl ether synthesis or gasoline then.In coal gasification course, the light component in the coal is converted into materials such as tar, phenol, ammonia and coal gas produces simultaneously, and in the washing of coal gas, cooling, scavenging process, major part enters in the waste water.Coal Chemical Industry cyanogen phenol waste water is the high concentrated organic wastewater that produces in the above-mentioned coal course of processing, waste water is mainly from gas washing, condensation and separation column etc. are located, waste water composition comparatively complexity had both contained easy biodegradable phenolic compound and benzene-like compounds, also contain biphenyl, polycyclic aromatic hydrocarbons, the organic pollutant of difficult for biological degradation such as heterogeneous ring compound, and the content of the hardly degraded organic substance in the waste water is up to 13-23%, cause routine biochemistry treatment process effluent COD concentration often to be 450-650mg/L, some improved biochemical processing process effluent COD concentration also can only reach about 300-400mg/L, and are bigger to environmental hazard.
The utility model content
In order to solve the problems of the technologies described above, the utility model provides the treatment unit of a kind of lurgi pressure gasifier or BGL slag gasification furnace gas maked coal factory effluent.
A kind of lurgi pressure gasifier gas maked coal production wastewater treatment device provided by the invention comprises:
Equalizing tank, reaction settling basin, air flotation pool, more medium filter, SBR Aerobic Pond, anaerobic biological pond, deammoniation tower, A/O biochemistry pool, ozone contact reaction device, two to three biochemical advanced treatment unit, flocculation sedimentation tank, quartz sand filtration device and clean water basin that are communicated with in turn are communicated with in regular turn by pipeline;
Wherein, above-mentioned ozone contact reaction device comprises: the ozonizer, first water sprayer and first ozone contact reaction tower that connect in turn by pipeline, described first water sprayer is connected with described A/O biochemistry pool by pipeline, and described first ozone contact reaction tower is connected with described biochemical advanced treatment unit by pipeline;
Above-mentioned biochemical advanced treatment unit comprises: hydrolysis acidification pool of Lian Tonging and biological contact oxidation pond in turn.
Further, above-mentioned lurgi pressure gasifier gas maked coal production wastewater treatment device also comprises ozone biological activated carbon reaction member, described ozone and activated carbon reaction member comprises: second water sprayer, second ozone contact reaction tower, the 5th intermediate pool and the connected lift pump and the biological activated carbon tower that connect in turn by pipeline, wherein, described second water sprayer also is connected with described ozonizer and quartz sand filtration device respectively by pipeline, and described biological activated carbon tower is connected with clean water basin by pipeline.
As preferably, above-mentioned lurgi pressure gasifier gas maked coal production wastewater treatment device also comprises:
First intermediate pool and connected lift pump are arranged between described A/O biochemistry pool and the ozone contact reaction device, and are communicated with by pipeline;
Second intermediate pool and connected lift pump are arranged between described ozone contact reaction device and its immediate hydrolysis acidification pool, and are communicated with by pipeline;
The 3rd intermediate pool and connected lift pump are arranged between flocculation sedimentation tank and the filtration unit, and are communicated with by pipeline;
The 4th intermediate pool and connected lift pump are arranged between filtration unit and the ozone biological activated carbon reaction member, and are communicated with by pipeline.
Preferably, between above-mentioned equalizing tank and the reaction settling basin, between described air flotation pool and the more medium filter and be provided with lift pump between described anaerobic biological pond and the deammoniation tower.
Preferably, above-mentioned lurgi pressure gasifier gas maked coal production wastewater treatment device also comprises:
First chemicals dosing plant is connected with the reaction settling basin front end by pipeline;
Second chemicals dosing plant is connected with the second order reaction district of described reaction settling basin by pipeline;
The 3rd chemicals dosing plant is connected with the air flotation pool front end by pipeline;
The 4th chemicals dosing plant is connected with the clean water basin front end by pipeline.
As preferably, above-mentioned air flotation pool comprises: whipping appts and slag scraper.
Preferably, above-mentioned lurgi pressure gasifier gas maked coal production wastewater treatment device also comprises the sludge treatment equipment that is connected with described reaction settling basin, air flotation pool, SBR Aerobic Pond, anaerobic biological pond, A/O biochemistry pool, hydrolysis acidification pool, biological contact oxidation pond and flocculation sedimentation tank by pipeline.
The treatment unit of above-mentioned lurgi pressure gasifier gas maked coal factory effluent also includes backwash water pump and backwash pond, and described backwash water pump is connected with described more medium filter, filtration unit and biological activated carbon tower by pipeline.
Preferably, above-mentioned lurgi pressure gasifier gas maked coal production wastewater treatment device also comprises at least one air-blast device, and described air-blast device is connected with SBR Aerobic Pond, deammoniation tower, A/O biochemistry pool, biological contact oxidation pond and biological activated carbon tower by pipeline.
Technology in the utility model applied widely, good operation stability, strong shock resistance, the contaminant removal efficiency height can not only thoroughly be removed SS, turbidity in the waste water, effectively reduces COD
Cr, ammonia nitrogen, BOD
5, oil, sulfide, prussiate, thiocyanide, phenols, fatty acid etc., and difficult degradation larger molecular organics polycyclic aromatic hydrocarbons, humic acids, pyridine, picoline, quinoline, cogongrass, pyrene etc. also there is significant removal effect, technology can effectively be eliminated the color of water, total effluent quality is good, can be used as open type recirculated cooling water or reclaimed water and uses.
Description of drawings
Fig. 1 is the structural representation of lurgi pressure gasifier gas maked coal factory effluent regeneration and treatment technique device in the utility model.
Fig. 2 is the schema of lurgi pressure gasifier gas maked coal factory effluent regeneration and treatment technique in the utility model;
Reference numeral:
1, equalizing tank; 2, first chemicals dosing plant; 3, second chemicals dosing plant; 4, reaction settling basin; 401, first order reaction district; 402, second order reaction district; 5, lift pump; 6, the 3rd chemicals dosing plant; 7, whipping appts; 8, slag scraper; 9, air flotation pool; 10, lift pump; 11, more medium filter; 12, SBR Aerobic Pond; 13, anaerobic biological pond; 14, lift pump; 15, deammoniation tower; 16, A/O biochemistry pool; 17, first intermediate pool; 18, lift pump; 19, ozonizer; 20, first water sprayer; 21, first ozone contact reaction tower; 22, second intermediate pool; 23, lift pump; 24, hydrolysis acidification pool; 25, biological contact oxidation pond; 26, flocculation sedimentation tank; 27, the 3rd intermediate pool; 28, lift pump; 29, quartz sand filtration device; 30, the 4th intermediate pool; 31, lift pump; 32, second water sprayer; 33, second ozone contact reaction tower; 34, the 5th intermediate pool; 35, lift pump; 36, biological activated carbon tower; 37, backwash water pump; 38, backwash pond; 39, the 4th chemicals dosing plant; 40, clean water basin; 41, air-blast device; 42, sludge treatment equipment.
Embodiment
Below in conjunction with accompanying drawing the concrete enforcement in the utility model is described in further detail.
Shown in Fig. 1 and 2, lurgi pressure gasifier gas maked coal factory effluent regeneration and treatment technique includes the following step in the utility model:
1) enters equalizing tank 1 through the qualified efflux wastewater after tar separation, extracting and dephenolizing, the ammonia still process processing, carry out water quality and quantity and regulate, for subsequent disposal provides stable water quality and quantity condition;
2) waste water of equalizing tank 1 discharge enters reaction settling basin 4, and the pH value that adds hydrochloric acid adjustment waste water by first chemicals dosing plant 2 in the first order reaction district 401 of reaction settling basin 4 is about 3, separates out flco in the waste water.In reaction settling basin 4 second order reaction districts 402, add coagulating agent and flocculation agent by second chemicals dosing plant 3, mix, react and generate alumen ustum, through flocculation and precipitation, remove refractory organics such as tar in the waste water, humic acids, alleviate the load of follow-up biochemical treatment, improve total effluent quality;
3) reaction settling basin 4 waste water of the discharging lift pump 5 of flowing through, by adding flocculation agent in the pipeline of the 3rd chemicals dosing plant 6 before air flotation pool 9, with enter air flotation pool 9 after waste water mixes, whipping appts 7 in the air flotation pool promotes the hybrid reaction of flocculation agent and waste water, and slag scraper 8 is used for the throw out of elimination air flotation pool.Waste water after air flotation pool 9 is handled enters more medium filter 11 through the lifting of lift pump 10.By the crown_interception of air flotation pool 9 effects and more medium filter 11, strengthen removal to refractory organics such as the tar in the waste water, humic acidss;
4) waste water after air flotation pool 9 and more medium filter 11 are handled enters SBR Aerobic Pond 12, utilizes microorganism that phenols is decomposed, and guarantees that water outlet phenols concentration is about 10-50mg/L;
5) waste water after SBR Aerobic Pond 12 is handled enters anaerobic biological pond 13, utilize anaerobion that difficult degradation larger molecular organics biodegrades such as the polycyclic aromatic hydrocarbons in the waste water, humic acids, pyridine, picoline, quinoline, cogongrass, pyrene are transformed, be degraded into the intermediate product of easy biochemistry, improve efficient and total effluent quality of whole biochemical treatment process;
6) waste water after handle in anaerobic biological pond 13 enters deammoniation tower 15 through lift pump 14, is about 10-11 by regulating waste water PH, ammonia nitrogen is converted to nitrogen and the stripping effect by air separates from waste water, further reduces ammonia nitrogen content in the waste water;
7) waste water after deammoniation tower 15 is handled enters A/O biochemistry pool 16, utilizes removal of microorganisms most organic and ammonia nitrogen, and organic pollutant resolves into carbonic acid gas and water, and ammonia nitrogen is converted into nitrogen, decontamination;
8) waste water after A/O biochemistry pool 16 is handled enters first intermediate pool 17, and water outlet enters first ozone contact reaction tower 21 through the lift pump 18 and first water sprayer 20, utilizes the O of lower concentration
3The macromolecular substance of difficult for biological degradation is oxidized to intermediate product, simultaneously O
3Resolve into O
2, the biodegradability of raising waste water improves follow-up biochemical processing efficiency;
9) 21 water outlets of first ozone contact reaction tower enter second intermediate pool 22, and water outlet enters the hydrolysis acidification pool 24 of biochemical advanced treatment unit through lift pump 23, and water outlet enters the biological contact oxidation pond 25 of biological advanced treatment unit.After ozone and the processing of biochemical advanced treatment unit, oxidized carbonic acid gas and the water of resolving into of most of recalcitrant substance;
10) waste water after biochemical advanced treatment unit is handled enters flocculation sedimentation tank 26, after water outlet enters the 3rd intermediate pool 27, water outlet enters quartz sand filtration device 29 through lift pump 28, after waste water and flocculation agent mix, react, generate alumen ustum, active sludge and colloid residual in the waste water are removed, and water quality further purifies.Quartz sand filtration device 29 is connected with backwash water pump 37 by pipeline, so that it is cleaned.
11) quartz sand filtration device 29 enters the 4th intermediate pool 30, water outlet enters ozone biological activated carbon reaction member through lift pump 31, ozone biological activated carbon reaction member comprises second water sprayer 32, second ozone contact reaction tower 33, the 5th intermediate pool 34, lift pump 35 and the biological activated carbon tower 36 that connects in regular turn, further removes hardly degraded organic substance by the acting in conjunction of ozone oxidation, gac physical and chemical adsorption, microbiological deterioration.Biological activated carbon tower 36 is connected with backwash water pump 37 by pipeline, so that it is cleaned.
12) water outlet of ozone biological activated carbon processing unit enters backwash pond 38, and water outlet enters clean water basin 40, adds disinfection by chlorine dioxide by the 4th chemicals dosing plant 39 in clean water basin 40, and water outlet is used as open type recirculated cooling water or reclaimed water.
Wherein, step 2) and 3) in reaction settling basin 4, air flotation pool 9 and more medium filter 11 mud, scum silica frost and the backwash draining that produce need dehydration separately under acidic conditions, device for dehydrating sladge waste adopts horizontal screw centrifuge, length-to-diameter ratio is 4-4.5.The flocculation agent that reaction settling basin 4 and air flotation pool 9 add is iron trichloride or Tai-Ace S 150 and organic high molecular polymer, and flocculation agent adopts the mechanical stirring mode with mixing with reaction of waste water, also can be the waterpower hybrid mode.
SBR technology is adopted in the aerobic biochemical pre-treatment in the step 4), improves the ballistic ability of resistance to poison material; Whole residual active sludges that the A/O biochemical treatment produces are back in the aerobic biochemical pretreatment pool, improve the stability of operation.
Added the granulated active carbon carrier in the step 5) in the anaerobic biological pond 13, the rate of adding is 20-35%.13 tops, anaerobic biological pond are provided with the gas-water separation cover, can be processed by materials such as stainless steel, glass reinforced plastic or engineering plastics; 13 bottoms, anaerobic biological pond are provided with into water divider, can be processed by materials such as stainless steel, glass reinforced plastic or engineering plastics.
Ozone adds dosage and is lower than 50mg/L in the step 8), and ozone adopts the counter current contact reaction with adopting injecting dissolve gas mode, reaction mixing of sewage, and the contact reacts time is 45-90min.
Step 9) mesophytization advanced treatment unit is made up of hydrolysis acidification pool (biologic packing material is arranged) and biological contact oxidation pond, for the 2-3 level is crisscross arranged, promptly the process combination form of " hydrolytic tank+biological contact oxidation pond+hydrolytic tank+biological contact oxidation pond+hydrolytic tank+biological contact oxidation pond " improves the removal effect to recalcitrant substance.Biologic packing material in the biochemical advanced treatment unit can be floating stuffing, also can be fixing filler, is processed by polypropylene or polyvinyl chloride material.In the biochemical advanced treatment unit, aeration mode is a perforated pipe aerating regulation.If biochemical advanced treatment unit is good at summer operation, effluent quality can directly enter clean water basin and do germicidal treatment behind process coagulating sedimentation and quartz sand filtration, the recirculated cooling water moisturizing is done in reuse after adding Scale inhibitors and sanitas, and ozone biological activated carbon processing unit does not rerun.
The flocculation agent that flocculation sedimentation tank 26 and quartz sand filtration device 29 add in the step 10) is inorganic polymer double salt polymkeric substance (can be the polymkeric substance of vitriol, muriate and the silicate etc. of iron content, aluminium) and organic high molecular polymer, flocculation agent adopts the mechanical stirring mode with mixing with reaction of waste water, also can be the waterpower hybrid mode.To the single media filtration mode of stream, filter material layer thickness was 1.2-1.5m under quartz sand filtration adopted, and bottom is placed the cobble bed course of 300-500mm, and the combined water and air backwash mode is adopted in back flushing.
In the step 11) in the ozone biological activated carbon processing unit ozone add dosage and be lower than 25mg/L, gac adopts the granulated active carbon of high adsorption capacity, hole prosperity.To flowing through the filter mode, filter material layer thickness was 3.0-3.5m under activated carbon filtration adopted, and bottom is placed quartz sand and the cobble bed course of 300-500mm, and the combined water and air backwash mode is adopted in back flushing.
As shown in Figure 1, for the water quality that further guarantees the normal operation of each device and guarantee to export, technological process is as follows more specifically in the utility model:
1, reaction settling basin
Adding hydrochloric acid by first chemicals dosing plant 2 in the first order reaction district of reaction settling basin 4, to adjust the pH value of waste water be about 3, separates out flco in the waste water.In the second order reaction district of reaction settling basin 4, add coagulating agent and flocculation agent by second chemicals dosing plant 3, mix, react and generate alumen ustum, through flocculation and precipitation, remove refractory organics such as tar in the waste water, humic acids, alleviate meeting of follow-up biochemical treatment, improve total effluent quality.
The flocculation agent that adds at reaction settling basin 4 is iron trichloride or Tai-Ace S 150 and organic high molecular polymer, and flocculation agent adopts the mechanical stirring mode with mixing with reaction of waste water, also can be the waterpower hybrid mode.
2, air supporting reaction
The waste water of adjusting after handling through reaction settling basin 4 enters in the pipeline that is connected with air flotation pool 9 by sewage pump 5, be connected with the 3rd chemicals dosing plant 6 in this pipeline, enter into air flotation pool 9 after flocculation agent, the coagulant aids that dosing pump is sent in the waste water that is promoted by sewage pump 5 and the 3rd chemicals dosing plant 6 mixes.By air flotation pool flocculation adsorption and strainer crown_interception, main pollutent and the most of ash content (removing the polycyclic aromatic hydrocarbons that is adsorbed on the ash content simultaneously) of removing the light constituent in oil in water emulsion, suspended substance, colloid pollution thing, the sewage, the toxicity that alleviates follow-up aerobic treatment system suppresses and improves whole effluent quality, makes water outlet oils content be lower than 30mg/L.
3, SBR aerobic reaction
SBR is the abbreviation of sequence intermittent activated sludge process (Sequencing Batch Reactor Activated SludgeProcess), it is a kind of active sludge sewage disposal technology that moves by the intermittent aeration mode, claim sequencing batch active sludge again, its principal character is the orderly and periodical operation in operation, the core of SBR technology is the sbr reactor pond, this pond collects homogenizing, heavy, biological degradation just, two functions such as heavy in a pond, no mud return-flow system.
Waste water after air flotation pool 9 and more medium filter 11 processing enters SBR Aerobic Pond 12, a large amount of in the waste water have the removal effect of strong inhibiting phenols in the aerobic biochemical treating processes better to microorganism, and the clearance in anaerobism and anaerobic environment is very low, SBR Aerobic Pond 12 utilizes microorganism that phenols is decomposed, and guarantees that water outlet phenols concentration is about 10-50mg/L.
4, anaerobic biochemical reaction
In anaerobic biological pond 13, utilize anaerobion that difficult degradation larger molecular organics biodegrades such as the polycyclic aromatic hydrocarbons in the waste water, humic acids, pyridine, picoline, quinoline, cogongrass, pyrene are transformed, be degraded into the intermediate product of easy biochemistry, improve the unitary efficient of whole biochemical treatment and total effluent quality.The anaerobic biological processing unit is that 40-48h is as controlling index with the residence time.
5, deammoniation tower
Deammoniation tower 15 can reduce the amount of ammonia nitrogen and other lower boiling objectionable impuritiess in the waste water, reduced restraining effect to subsequent biological treatment technology, reduce too high wastewater temperature, deammoniation tower has been done special consideration simultaneously, and a small amount of obnoxious flavour of avoiding containing in the waste water can the stripping effusion cause secondary pollution.
6, A/O biochemical reaction
Waste water after deammoniation tower 15 is handled enters A/O biochemistry pool 16, utilizes removal of microorganisms most organic and ammonia nitrogen, and organic pollutant resolves into carbonic acid gas and water, and ammonia nitrogen is converted into nitrogen, decontamination.A/O biochemistry pool 16 is 10-30mg/L and BOD with the water outlet ammonia nitrogen concentration
5Concentration is lower than 15mg/L as controlling index.
7. ozone contact reaction
The ozone contact reaction device comprises: ozonizer 19, first water sprayer 20 and first ozone contact reaction tower 21 of Lian Jieing in regular turn, wherein first water sprayer 20 is connected with first intermediate pool 17 by pipeline.Ozonizer 19 is used for by first water sprayer 20 to first ozone contact reaction tower, 21 ozone supplies.It utilizes the O of lower concentration
3The macromolecular substance of difficult for biological degradation is oxidized to intermediate product, simultaneously O
3Resolve into O
2, the biodegradability of raising waste water improves follow-up biochemical processing efficiency.
8, biochemical advanced treatment unit
Biochemical advanced treatment unit is made up of hydrolysis acidification pool 34 (biologic packing material is arranged) and biological contact oxidation pond 35, for the 2-3 level is crisscross arranged, promptly the process combination form of " hydrolytic tank+biological contact oxidation pond+hydrolytic tank+biological contact oxidation pond+hydrolytic tank+biological contact oxidation pond " improves the removal effect to recalcitrant substance.Biologic packing material in the biochemical advanced treatment unit can be floating stuffing, also can be fixing filler, is processed by polypropylene or polyvinyl chloride material.If biochemical advanced treatment unit is good at summer operation, effluent quality can directly enter clean water basin and do germicidal treatment behind process coagulating sedimentation and quartz sand filtration, the recirculated cooling water moisturizing is done in reuse after adding Scale inhibitors and sanitas, and ozone biological activated carbon processing unit does not rerun.After ozone and the processing of biochemical advanced treatment unit, oxidized carbonic acid gas and the water of resolving into of most of recalcitrant substance.
9, ozone biological activated carbon reaction member
The waste water of quartz sand filtration device 29 outputs enters the 4th intermediate pool 30, be used for waste water is cushioned, prevent that the water inlet that excessive waste water directly enters second ozone contact reaction tower, 33, the second ozone contact reaction towers 33 is provided with second water sprayer 32, is connected with ozonizer 19 simultaneously.The ozone that ozone generating-device 19 produces is inhaled in the pipeline that enters second ozone contact reaction tower 33 by means of the suction function that second water sprayer 32 produces, ozone and water enter second ozone contact reaction tower 33 after mixing, make in second ozone contact reaction tower 33, to stop behind the 30min and fully react the back with ozone to improve biochemical be the B/C ratio with ozone blended water, the water outlet of second ozone contact reaction tower 33 is introduced into intermediate pool 34, under the effect of lift pump 35, waste water is driven in the biological activated carbon tower 36 then, adsorb and biological degradation after entering biological activated carbon tower 36, promptly utilize charcoal absorption effect and biomembranous Degradation removal organic pollution materials in the biological activated carbon, further reduce COD, NH
3-N and colourity, guarantee the stable of water outlet, can avoid the saturated back of gac to lose efficacy (the back gac that lost efficacy just needs to change) simultaneously, can recover active after the backwash, reduce system operation cost greatly, water outlet can be used as open type recirculated cooling water and reclaimed water.
Be mixed with and contain residual ozone and oxygen fully in the waste water of ozone, make activated carbon column be in the oxygen enrichment state, cause flora in activated carbon surface breeding growth, by effects such as biology absorption and oxidative degradations, significantly improved gac and removed organic ability, and increased the service life.Biodegradation process can resolve into CO with deliquescent organism
2And H
2O or non-dissolved organism form the benign cycle of adsorption-desorption, have in a disguised form improved loading capacity.Operation facts have proved, utilizes improvement and the stabilization of bio-oxidation characteristic to water quality, has improved the work-ing life (more than 5 times) of gac, has reduced processing cost.
10 sludge treatment
In above-mentioned technological process, can also be provided with and be used for the scum silica frost that processing reaction settling tank 3, air flotation pool 9, SBR Aerobic Pond 12, anaerobic biological pond 13, A/O biochemistry pool 16, hydrolysis acidification pool 34, biological contact oxidation pond 35 and flocculation sedimentation tank 26 produce and the sludge treatment equipment 42 of excess sludge, pass through pipe connection respectively.
11. clean
Normally move in order to ensure more medium filter 11, quartz sand filtration device 29 and biological-activated-carbon reaction device 36, also be equipped with the washing unit that is used to clean more medium filter 11, quartz sand filtration device 29 and biological-activated-carbon reaction device 36, this washing unit includes backwash pond 38 and backwash water pump 37.Backwash water pump 37 is connected with more medium filter 11, quartz sand filtration device 29 and biological-activated-carbon reaction device 36 by pipeline.
12. air blast
Because biochemical reaction needs oxygen to promote reaction, air-blast device 41 is set in the treatment unit of the present utility model, it is connected with SBR Aerobic Pond 12, deammoniation tower 15, A/O biochemistry pool 16, biological contact oxidation pond 25 and biological activated carbon tower by pipeline, except providing the oxygen, also can assist washing unit to clean for biochemical reaction.
In sum, lurgi pressure gasifier gas maked coal production wastewater treatment device is applied widely in the utility model, good operation stability, strong shock resistance, and the contaminant removal efficiency height can not only thoroughly be removed SS, turbidity in the waste water, effectively reduces COD
Cr, ammonia nitrogen, BOD
5, oil, sulfide, prussiate, thiocyanide, phenols, fatty acid etc., and difficult degradation larger molecular organics polycyclic aromatic hydrocarbons, humic acids, pyridine, picoline, quinoline, cogongrass, pyrene etc. also there is significant removal effect, technology can effectively be eliminated the color of water, total effluent quality is good, and water outlet COD can reach 30-50mg/L and can be used as open type recirculated cooling water or reclaimed water use.
Claims (9)
1. a lurgi pressure gasifier gas maked coal production wastewater treatment device is characterized in that, comprising:
Equalizing tank, reaction settling basin, air flotation pool, more medium filter, SBR Aerobic Pond, anaerobic biological pond, deammoniation tower, A/O biochemistry pool, ozone contact reaction device, two to three biochemical advanced treatment unit, flocculation sedimentation tank, quartz sand filtration device and clean water basin that are communicated with in turn are communicated with in regular turn by pipeline;
Wherein, described ozone contact reaction device comprises: the ozonizer, first water sprayer and first ozone contact reaction tower that connect in turn by pipeline, described first water sprayer is connected with described A/O biochemistry pool by pipeline, and described first ozone contact reaction tower is connected with described biochemical advanced treatment unit by pipeline;
Described biochemical advanced treatment unit comprises: hydrolysis acidification pool of Lian Tonging and biological contact oxidation pond in turn.
2. lurgi pressure gasifier gas maked coal production wastewater treatment device according to claim 1, it is characterized in that, described treatment unit also comprises ozone biological activated carbon reaction member, described ozone and activated carbon reaction member comprises: second water sprayer that connects in turn by pipeline, second ozone contact reaction tower, the 5th intermediate pool and connected lift pump, and biological activated carbon tower, wherein, described second water sprayer is connected with described ozonizer and quartz sand filtration device respectively by pipeline, and described biological activated carbon tower is connected with clean water basin by pipeline.
3. lurgi pressure gasifier gas maked coal production wastewater treatment device according to claim 1 is characterized in that, also comprises:
First intermediate pool and connected lift pump are arranged between described A/O biochemistry pool and the ozone contact reaction device, and are communicated with by pipeline;
Second intermediate pool and connected lift pump are arranged between described ozone contact reaction device and its immediate hydrolysis acidification pool, and are communicated with by pipeline;
The 3rd intermediate pool and connected lift pump are arranged between flocculation sedimentation tank and the filtration unit, and are communicated with by pipeline;
The 4th intermediate pool and connected lift pump are arranged between filtration unit and the ozone biological activated carbon reaction member, and are communicated with by pipeline.
4. lurgi pressure gasifier gas maked coal production wastewater treatment device according to claim 1, it is characterized in that, between described equalizing tank and the reaction settling basin, between described air flotation pool and the more medium filter and be provided with lift pump between described anaerobic biological pond and the deammoniation tower.
5. lurgi pressure gasifier gas maked coal production wastewater treatment device according to claim 1 is characterized in that, also comprises:
First chemicals dosing plant is connected with the reaction settling basin front end by pipeline;
Second chemicals dosing plant is connected with the second order reaction district of described reaction settling basin by pipeline;
The 3rd chemicals dosing plant is connected with the air flotation pool front end by pipeline;
The 4th chemicals dosing plant is connected with the clean water basin front end by pipeline.
6. lurgi pressure gasifier gas maked coal production wastewater treatment device according to claim 1 is characterized in that described air flotation pool comprises: whipping appts and slag scraper.
7. lurgi pressure gasifier gas maked coal production wastewater treatment device according to claim 1, it is characterized in that, also comprise the sludge treatment equipment that is connected with described reaction settling basin, air flotation pool, SBR Aerobic Pond, anaerobic biological pond, A/O biochemistry pool, hydrolysis acidification pool, biological contact oxidation pond and flocculation sedimentation tank by pipeline.
8. lurgi pressure gasifier gas maked coal production wastewater treatment device according to claim 1, it is characterized in that, also include backwash water pump and backwash pond, described backwash water pump is connected with described more medium filter, filtration unit and biological activated carbon tower by pipeline.
9. lurgi pressure gasifier gas maked coal production wastewater treatment device according to claim 1, it is characterized in that, also comprise at least one air-blast device, described air-blast device is connected with SBR Aerobic Pond, deammoniation tower, A/O biochemistry pool, biological contact oxidation pond and biological activated carbon tower by pipeline.
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| CN2010206792800U CN201908024U (en) | 2010-12-14 | 2010-12-14 | Waste water treatment device for coal gasification production by aid of Lurgi pressurized gasifier |
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|---|---|---|---|
| CN2010206792800U CN201908024U (en) | 2010-12-14 | 2010-12-14 | Waste water treatment device for coal gasification production by aid of Lurgi pressurized gasifier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121776A (en) * | 2013-03-04 | 2013-05-29 | 南京工业大学 | Advanced treatment process for coal-to-liquid wastewater |
| CN106746158A (en) * | 2015-11-19 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of coal water slurry gasification process produces the deepness denitrogenation method for treating of waste water |
-
2010
- 2010-12-14 CN CN2010206792800U patent/CN201908024U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121776A (en) * | 2013-03-04 | 2013-05-29 | 南京工业大学 | Advanced treatment process for coal-to-liquid wastewater |
| CN106746158A (en) * | 2015-11-19 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of coal water slurry gasification process produces the deepness denitrogenation method for treating of waste water |
| CN106746158B (en) * | 2015-11-19 | 2020-09-11 | 中国石油化工股份有限公司 | Advanced denitrification treatment method for wastewater generated in coal water slurry gasification process |
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Address after: 132012, Jinsha Road, 2, high speed lead camp, Jilin, Jilin Patentee after: HUEYA ENVIRONMENT ENGINEERING CO., LTD. Address before: 132012, Jinsha Road, 2, high speed lead camp, Jilin, Jilin Patentee before: Jilin HUEYA Environmental Engineering Co., Ltd. |
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