CN103663679B - Pure oxygen aeration is utilized to carry out the method for low-carbon high-nitrogen sewage nitration reaction - Google Patents
Pure oxygen aeration is utilized to carry out the method for low-carbon high-nitrogen sewage nitration reaction Download PDFInfo
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- CN103663679B CN103663679B CN201210348596.5A CN201210348596A CN103663679B CN 103663679 B CN103663679 B CN 103663679B CN 201210348596 A CN201210348596 A CN 201210348596A CN 103663679 B CN103663679 B CN 103663679B
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- 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
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Abstract
Utilize pure oxygen aeration to carry out the method for low-carbon high-nitrogen sewage nitration reaction, belong to sewage disposal device and technical field.Comprise aeration tank (1) and settling tank (2), it is characterized in that: in described aeration tank (1), be provided with multiple partition wall (3) side by side, aeration tank (1) is divided into multiple solarization air cell, aerator (4) is all installed in each solarization air cell, aeration tank (1) one end has water-in, the other end has water outlet and is communicated with the water inlet of settling tank (2), and settling tank (2) has water outlet and refluxing opening, and the refluxing opening of settling tank (2) is communicated with aeration tank (1).This utilizes pure oxygen aeration to carry out the device of low-carbon high-nitrogen sewage nitration reaction without the need to adding carbon source, high, the effective removal ammonia nitrogen of oxygen utilization rate and organism, and reduces job costs, is suitable for generally applying.
Description
Technical field
Utilize pure oxygen aeration to carry out the method for low-carbon high-nitrogen sewage nitration reaction, belong to sewage disposal device and technical field, be specifically related to a kind of device and method of low-carbon high-nitrogen sewage nitration reaction.
Background technology
Low-carbon high-nitrogen sewage is mainly derived from coked waste water, percolate, chemical fertilizer sewage, aquaculture wastewater anaerobic nitrification liquid etc.Supply and discharge water factory low-carbon high-nitrogen sewage derives from chemical engineering sewage.This sewage quantity is about 100m
3/ h, COD
crfor 90-160 mg/L, average out to 108mg/L, ammonia nitrogen between 90-360mg/L, average out to 118mg/L.Ammonia-state nitrogen is changed into nitrite nitrogen by the nitrifying process of current biological denitrificaion mainly Nitrosomas, and nitrite nitrogen is converted into nitrate nitrogen by Nitromonas.Nitrosomas and Nitromonas are referred to as nitrobacteria, and nitrobacteria is very responsive to environmental change, and required condition is aerobic condition, and need keep certain basicity; Organic carbon concentration can not be too high.For low-carbon high-nitrogen sewage, the ammonia nitrogen of high density and nitrite suppress the growth of nitrifier, and sewage carbon source is not enough, affects the foundation of nitration reaction.Thus, low-carbon high-nitrogen sewage process needs additional carbon, increases cost of sewage disposal.
At present, the research of pure oxygen aeration Wastewater Treated by Activated Sludge Process low-carbon high-nitrogen sewage is adopted mainly to concentrate on the process of city low-carbon high-nitrogen sanitary sewage, the method without the need to adding carbon source, oxygen utilization rate is high, reach and remove ammonia nitrogen and organism object, become so how to utilize pure oxygen aeration process low-carbon high-nitrogen sewage and be applied to industry the problem that scientific research personnel is badly in need of solution.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provides a kind of without the need to adding carbon source, high, the effective removal ammonia nitrogen of oxygen utilization rate and the organic device and method utilizing pure oxygen aeration to carry out low-carbon high-nitrogen sewage nitration reaction.
The technical solution adopted for the present invention to solve the technical problems is: this utilizes pure oxygen aeration to carry out the device of low-carbon high-nitrogen sewage nitration reaction, comprise aeration tank and settling tank, it is characterized in that: in described aeration tank, be provided with multiple partition wall side by side, aeration tank is divided into multiple solarization air cell, all aerator is installed in each solarization air cell, one end, aeration tank has water-in, the other end has water outlet and is communicated with the water inlet of settling tank, settling tank has water outlet and refluxing opening, and the refluxing opening of settling tank is communicated with aeration tank.Aerator carries out oxygenic aeration in aeration tank makes oxygen fully mix with sewage, under the effect of microorganism, and degradation of sewage pollutent, muddy water mixed solution after process enters settling tank, and after mud-water separation, most of sludge reflux is to aeration tank, small part excess sludge is arranged outward, and supernatant liquor discharges.
Preferably, described partition wall establishes three sections altogether, aeration tank is divided into four solarization air cell, and the height of partition wall is identical with aeration tank exterior wall height, and all having below every section of partition wall can for the water valve of sewage flow.
Preferably, have cross flow deflector below described aerator, flow deflector is connected with pond body bottom aeration tank.Cross flow deflector can make oxygen fully mix with sewage.
Preferably, described aerator selects surface aeration machine, and aerator is arranged on above aeration tank, and one end is sunk in aeration tank, and the other end is outside in aeration tank.
In described aeration tank, a wall is built in the side of water outlet, wall be parallel to partition wall and height lower than partition wall, wall and water outlet side, aeration tank exterior wall form an effluent trough, and the muddy water mixed solution after process can flow in effluent trough from wall superjacent air space and enter settling tank.
Utilize pure oxygen aeration to set up the method for low-carbon high-nitrogen sewage nitration reaction, it is characterized in that, comprise the following steps:
1, the pure oxygen aeration that utilizes set up as described in any one of claim 1 ~ 5 carries out the device of low-carbon high-nitrogen sewage nitration reaction, and imports nitrifying sludge in aeration tank, adds nutrition agent, carries out nitrifying sludge domestication, set up nitration reaction;
2, low-carbon high-nitrogen sewage and backflow mixed liquor enter aeration tank, aerator work, carry out aeration, low-carbon high-nitrogen sewage, oxygen and backflow mixed liquor are mixed into aeration tank first paragraph solarization air cell, and flow through each section successively by water valve, and under the effect of microorganism, degradation of sewage pollutent;
3, the muddy water mixed solution after process enters settling tank, and after mud-water separation, most of sludge reflux is to aeration tank, and small part excess sludge is arranged outward, and supernatant liquor discharges, with this cycle operation; During operation, DO is 12mg/L, MLSS is 16mg/L, SV
30for 96mL, SVI are 43mL/g, sludge reflux 100%, HRT is greater than 12h.
COD
craverage removal rate is 45.7%.
The method utilizes pure oxygen aeration technique to set up the nitration reaction of low-carbon high-nitrogen sewage, and without the need to adding carbon source, oxygen utilization rate is high, reaches and removes ammonia nitrogen and organism object.
Compared with prior art, the beneficial effect that the present invention has is:
1, this utilizes pure oxygen aeration to carry out the device manufacture of low-carbon high-nitrogen sewage nitration reaction simply, and cost is low, is applicable to popularity application;
2, utilizing pure oxygen aeration to set up the method for low-carbon high-nitrogen sewage nitration reaction, without the need to adding carbon source, reduce cost of sewage disposal, and oxygen utilization rate is high, reach and remove ammonia nitrogen and organism object, wherein water outlet ammonia nitrogen is below detection limit, COD
craverage removal rate is 45.7%, and the method is to ammonia nitrogen removal Be very effective.
Accompanying drawing explanation
Fig. 1 is present invention process schematic flow sheet.
Fig. 2 is Aeration tank structure schematic diagram of the present invention.
Fig. 3 is Inlet and outlet water COD
crchanging trend diagram.
Fig. 4 is Inlet and outlet water ammonia nitrogen changing trend diagram.
Wherein: 1, aeration tank 2, settling tank 3, partition wall 4, aerator 5, flow deflector 6, wall 7, effluent trough 8, water valve.
Embodiment
Fig. 1 ~ 4 are most preferred embodiments of the present invention, and below in conjunction with accompanying drawing 1 ~ 4, the present invention will be further described.
With reference to accompanying drawing 2: this utilizes pure oxygen aeration to carry out the device of low-carbon high-nitrogen sewage nitration reaction, comprise aeration tank 1 and settling tank 2, multiple partition wall 3 is side by side provided with in aeration tank 1, aeration tank 1 is divided into multiple solarization air cell, partition wall 3 establishes three sections altogether, aeration tank 1 is divided into four solarization air cell, in each solarization air cell, aerator 4 is all installed.The height of partition wall 3 is identical with aeration tank 1 exterior wall height, all having below every section of partition wall 3 can for the water valve 8 of sewage flow, in aeration tank 1, a wall 6 is built in the side of water outlet, wall 6 be parallel to partition wall 3 and height lower than partition wall 3, wall 6 and water outlet side, aeration tank 1 exterior wall form an effluent trough 7, and the muddy water mixed solution after process can flow in effluent trough 7 from wall 6 superjacent air space and enter settling tank 2.
One end, aeration tank 1 has water-in, and the other end has water outlet and is communicated with the water inlet of settling tank 2, and settling tank 2 has water outlet and refluxing opening, and the refluxing opening of settling tank 2 is communicated with aeration tank 1.
Aerator 4 selects surface aeration machine, and aerator 4 is arranged on above aeration tank 1, and one end is sunk in aeration tank 1, and the other end is outside in aeration tank 1.Have cross flow deflector 5 below aerator 4, flow deflector 5 is connected with pond body bottom aeration tank 1, and cross flow deflector 5 can make oxygen fully mix with sewage.Aerator 4 carries out oxygenic aeration in aeration tank 1 makes oxygen fully mix with sewage, under the effect of microorganism, degradation of sewage pollutent, muddy water mixed solution after process enters settling tank 2, after mud-water separation, major part sludge reflux is to aeration tank 1, and small part excess sludge is arranged outward, and supernatant liquor discharges.
With reference to accompanying drawing 1 ~ 2: utilize pure oxygen aeration to set up the method for low-carbon high-nitrogen sewage nitration reaction, comprise the following steps:
1, foundation utilizes pure oxygen aeration to carry out the device of low-carbon high-nitrogen sewage nitration reaction, and imports nitrifying sludge in aeration tank 1, adds nutrition agent, carries out nitrifying sludge domestication, set up nitration reaction;
2, low-carbon high-nitrogen sewage and backflow mixed liquor enter aeration tank 1, and aerator 4 works, and carry out aeration, low-carbon high-nitrogen sewage, oxygen and backflow mixed liquor are mixed into aeration tank 1 first paragraph solarization air cell, and flow through each section successively by water valve 8, and under the effect of microorganism, degradation of sewage pollutent;
3, the muddy water mixed solution after process enters settling tank 2, and after mud-water separation, most of sludge reflux is to aeration tank 1, and small part excess sludge is arranged outward, and supernatant liquor discharges, with this cycle operation; During operation, DO is 12mg/L, MLSS is 16mg/L, SV
30for 96mL, SVI are 43mL/g, sludge reflux 100%, HRT is greater than 12h, COD
craverage removal rate is 45.7%.
With reference to accompanying drawing 3: when the method utilizing pure oxygen aeration to set up low-carbon high-nitrogen sewage nitration reaction carries out the sewage disposal of low-carbon high-nitrogen, influent COD
crbetween 112-196mg/L, average out to 140mg/L, water outlet COD
crbetween 60.2-89.3mg/L, average out to 74.4mg/L, COD
crclearance 30.4-64.6%, average out to 45.7%, shows that this utilizes pure oxygen aeration to set up the method for low-carbon high-nitrogen sewage nitration reaction to COD
crthere is removal effect.
With reference to accompanying drawing 4: when the method utilizing pure oxygen aeration to set up low-carbon high-nitrogen sewage nitration reaction carries out the sewage disposal of low-carbon high-nitrogen, influent ammonia nitrogen is between 137-234mg/L, average out to 188mg/L, water outlet ammonia nitrogen is below detectability, ammonia nitrogen removal frank, close to 100%, shows that this utilizes pure oxygen aeration to set up the method for low-carbon high-nitrogen sewage nitration reaction to ammonia nitrogen removal Be very effective.The method utilizes pure oxygen aeration technique to set up the nitration reaction of low-carbon high-nitrogen sewage, and without the need to adding carbon source, oxygen utilization rate is high, reach and remove ammonia nitrogen and organism object, and cost is low, is suitable for popularity.
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (2)
1. utilize pure oxygen aeration to set up the method for low-carbon high-nitrogen sewage nitration reaction, it is characterized in that, comprise the following steps:
1.1. setting up utilizes pure oxygen aeration to carry out the device of low-carbon high-nitrogen sewage nitration reaction, comprise aeration tank (1) and settling tank (2), three sections of partition walls (3) are side by side provided with in described aeration tank (1), aeration tank (1) is divided into four solarization air cell, aerator (4) is all installed in each solarization air cell, aeration tank (1) one end has water-in, the other end has water outlet and is communicated with the water inlet of settling tank (2), settling tank (2) has water outlet and refluxing opening, and the refluxing opening of settling tank (2) is communicated with aeration tank (1); The height of partition wall (3) is identical with aeration tank (1) exterior wall height, and every section of partition wall (3) below all has the water valve (8) that can supply sewage flow; Described aerator (4) below has cross flow deflector (5), and flow deflector (5) is connected with pond, aeration tank (1) bottom body; Described aerator (4) selects surface aeration machine, and aerator (4) is arranged on top, aeration tank (1), and one end is sunk in aeration tank (1), and the other end is outside in aeration tank (1); In described aeration tank (1), a wall (6) is built in the side of water outlet, and wall (6) is parallel to partition wall (3) and highly lower than partition wall (3), wall (6) and aeration tank (1) water outlet side exterior wall form an effluent trough (7); And nitrifying sludge is imported in aeration tank (1), add nutrition agent, carry out nitrifying sludge domestication, set up nitration reaction;
1.2. low-carbon high-nitrogen sewage and backflow mixed liquor enter aeration tank (1), aerator (4) works, carry out aeration, low-carbon high-nitrogen sewage, oxygen and backflow mixed liquor are mixed into aeration tank (1) first paragraph solarization air cell, and flow through each section successively by water valve (8), under the effect of microorganism, degradation of sewage pollutent;
1.3. the muddy water mixed solution after process enters settling tank (2), and after mud-water separation, most of sludge reflux is to aeration tank (1), and small part excess sludge is arranged outward, and supernatant liquor discharges, with this cycle operation; During operation, DO is 12mg/L, MLSS is 16mg/L, SV
30for 96mL, SVI are 43mL/g, sludge reflux 100%, HRT is greater than 12h.
2. the method utilizing pure oxygen aeration to set up low-carbon high-nitrogen sewage nitration reaction according to claim 1, is characterized in that: COD
craverage removal rate is 45.7%.
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|---|---|---|---|
| CN201210348596.5A CN103663679B (en) | 2012-09-19 | 2012-09-19 | Pure oxygen aeration is utilized to carry out the method for low-carbon high-nitrogen sewage nitration reaction |
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| CN201210348596.5A CN103663679B (en) | 2012-09-19 | 2012-09-19 | Pure oxygen aeration is utilized to carry out the method for low-carbon high-nitrogen sewage nitration reaction |
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| CN103663679B true CN103663679B (en) | 2015-08-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542632A (en) * | 2016-10-28 | 2017-03-29 | 广州中国科学院沈阳自动化研究所分所 | A kind of method for starting nitration reaction under micro-oxygen conditions |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587336A (en) * | 2015-10-15 | 2017-04-26 | 圣堃环保科技（上海）有限公司 | Sewage treatment apparatus |
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| US3960717A (en) * | 1972-01-20 | 1976-06-01 | Air Products And Chemicals, Inc. | Process for treating waste water |
| JPS6022994A (en) * | 1983-07-19 | 1985-02-05 | Kubota Ltd | Process for aerating activated sludge with pure oxygen |
| US4898672A (en) * | 1987-09-14 | 1990-02-06 | Clifft Ricky C | Oxygen controlling wastewater treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106542632A (en) * | 2016-10-28 | 2017-03-29 | 广州中国科学院沈阳自动化研究所分所 | A kind of method for starting nitration reaction under micro-oxygen conditions |
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| CN103663679A (en) | 2014-03-26 |
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