CN115448456A - Biological sewage denitrification treatment method and application thereof - Google Patents
Biological sewage denitrification treatment method and application thereof Download PDFInfo
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- CN115448456A CN115448456A CN202211027296.7A CN202211027296A CN115448456A CN 115448456 A CN115448456 A CN 115448456A CN 202211027296 A CN202211027296 A CN 202211027296A CN 115448456 A CN115448456 A CN 115448456A
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- 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
- C02F3/30—Aerobic and anaerobic processes
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- 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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
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Abstract
The invention discloses a biological sewage denitrification treatment method and application thereof, belonging to the technical field of sewage treatment. The denitrification treatment method adopts a full-membrane sewage biological denitrification treatment device, and the device comprises an anoxic membrane tank 1, an aerobic membrane tank 2, an MBR (membrane bioreactor) membrane system 3 and a reflux system 4; the anoxic membrane tank 1, the aerobic membrane tank 2 and the MBR membrane system 3 are sequentially connected; two ends of the reflux system 4 are respectively connected with the anoxic membrane tank 1 and the aerobic membrane tank 2; the anoxic membrane tank 1 comprises a flow impeller 6, a water inlet pipe 7, an anoxic aeration system 8 and a suspended mobile filler 5; the flow pushing direction of the flow pusher 6 is opposite to the air outlet direction of the anoxic aeration system 8; the aerobic membrane tank 2 comprises a fixed fiber filler 9 and an aerobic aeration system 13 positioned right below the fixed fiber filler 9. According to the invention, only the biological membrane is taken as a carrier, and different microorganisms are respectively enriched and cultured in different environments, so that the abundance of the microorganisms is improved, and the efficiency of nitrogen conversion is improved.
Description
The application is a divisional application provided by the invention patent of a full-membrane sewage biological denitrification treatment device and a sewage biological denitrification treatment method applied on 28.01.2021, and the original application numbers are as follows: 202110227336.6.
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a biological sewage denitrification treatment method and application thereof.
Background
Biological denitrification has been considered the most economical way of denitrification of wastewater. In general, activated sludge is generally used as a carrier in the conventional biological denitrification, and nitrification microorganism and denitrification microorganism enrichment are realized by alternately operating in an anoxic environment and an aerobic environment. In an aerobic environment, the activity of denitrifying microorganisms in the sludge is in a suppressed state due to the lack of an aerobic environment and organic matters, while the activity of nitrifying microorganisms in the sludge is recovered, and ammonia nitrogen in the sewage is converted into nitrite or nitrate by using oxygen; then when the sludge and the nitrifying liquid flow back to the anaerobic or anoxic environment, the activity of the nitrifying microorganisms is in a suppressed state due to lack of dissolved oxygen, and at the moment, the activity of the denitrifying microorganisms recovers and utilizes organic matters in the inlet water to convert nitrate into nitrogen gas for removal. In order to fully utilize organic matters carried in raw water to carry out denitrification, a preposed anoxic tank is generally followed by an aerobic tank, and a nitrification liquid reflux system is arranged to reflux water treated by the aerobic tank to the front-end anoxic tank. In order to ensure that the anoxic tank and the aerobic tank have enough microorganisms, the sedimentation tank is additionally arranged, and a sludge reflux pump is additionally arranged to reflux the precipitated high-concentration sludge to the anoxic end. The current denitrification system using the single sludge as the carrier has the following problems because the carrier is single and continuously and alternately operates in aerobic and anoxic environments: firstly, nitrobacteria are autotrophic microorganisms and grow slowly; the denitrifying microorganism is heterotrophic microorganism, which can grow faster, resulting in high sludge yield. The method is put into a single sludge system to alternately operate, the specific gravity of autotrophic microorganisms is hardly increased by adopting a single sludge discharge period, and the activity of a nitrification system is hardly improved. And secondly, in a conventional biological denitrification system using sludge as a carrier, the sludge often causes the breaking of microorganism aggregates due to aeration and stirring, so that the sludge sedimentation tank has large volume and is difficult in sludge-water separation.
In order to solve the problem of low abundance of microorganisms in a single sludge system, fillers are additionally arranged in an aerobic area and an anoxic area in some existing process designs, so that the abundance of nitrifying microorganisms and denitrifying microorganisms in a corresponding tank body is increased, and a membrane-sludge double system or a single membrane system is further formed. The sludge of the membrane-sludge dual system needs to be precipitated, and the problems of high sludge quantity, fragility and the like still exist, so that the problem of low abundance of autotrophic microorganisms still cannot be solved; the single membrane system has the following problems: 1) The generation time of the denitrifying microorganisms is short, the propagation speed is high, and the growth and death of the biological membrane are high, so that the phenomenon that the aged biological membrane is difficult to fall off is caused; 2) The nitrification system has the phenomenon that the growth of microorganisms is slow, and a biological membrane is difficult to form quickly or is difficult to fall off after being formed. Therefore, it is necessary to adopt membrane carriers with different characteristics according to the growth characteristics of different microorganisms and to solve the above problems by means of unique process design.
Disclosure of Invention
One of the purposes of the invention is to provide a biological sewage denitrification treatment system, which comprises a denitrification device consisting of an anoxic membrane tank 1, an aerobic membrane tank 2, an MBR (membrane bioreactor) membrane system 3 and a reflux system 4;
the anoxic membrane tank 1, the aerobic membrane tank 2 and the MBR membrane system 3 are sequentially connected;
two ends of the reflux system 4 are respectively connected with the anoxic membrane tank 1 and the aerobic membrane tank 2;
the anoxic membrane tank 1 comprises a flow impeller 6, a water inlet pipe 7, an anoxic aeration system 8 and a suspended mobile filler 5; the flow pushing direction of the flow pusher 6 is opposite to the air outlet direction of the anoxic aeration system 8;
the aerobic membrane tank 2 comprises a fixed fiber filler 9 and an aerobic aeration system 13 positioned right below the fixed fiber filler 9.
Preferably, the reflux ratio of the reflux is (2-14): 1.
more preferably, the reflux ratio of the reflux is 4:1.
preferably, the filling degree of the suspended mobile filler 5 in the anoxic membrane tank 1 is 40-60%.
Preferably, the suspension moving filler 5 is polyethylene moving film filler, sponge film or a combination of polyethylene moving film filler and sponge film (see fig. 4).
Preferably, the filling degree of the fixed fiber filler 9 in the aerobic membrane pool 2 is 40-60%.
More preferably, the anoxic membrane tank 1 and the aerobic membrane tank 2 are constructed on the same wall.
Preferably, the aerobic aeration system 13 and the anoxic aeration system 8 adopt microporous aeration pipelines.
Preferably, the MBR membrane system 3 is an external membrane.
Preferably, the reflux system 4 employs a gas lift reflux or reflux pump reflux.
Preferably, the MBR membrane system 3 comprises an old biofilm outlet 11 and a water outlet 12; and an ultrafiltration membrane is arranged in the MBR membrane system 3.
The invention also aims to provide an operation method of the treatment system and application of the treatment system in biological denitrification of sewage.
More preferably, the processing method comprises the steps of:
closing the anoxic aeration system 8, starting the flow impeller 6 and the aerobic aeration system 13, sequentially feeding the sewage into the anoxic membrane tank 1 from the water inlet pipe 7 for anoxic treatment and the aerobic membrane tank 2 for aerobic treatment, refluxing a part of nitrified liquid obtained after the aerobic treatment to the anoxic membrane tank 1 through the reflux system 4, and treating the rest part through the MBR membrane system 3 to realize sludge-water separation;
after the biological membrane on the suspended moving filler 5 in the anoxic membrane tank 1 is aged, opening an anoxic aeration system 8 to enable the aged biological membrane to fall off;
and when the biological membrane fixed on the fiber filler 9 in the aerobic membrane tank 2 is aged, the aeration quantity of the aerobic aeration system 13 is instantly increased, so that the aged biological membrane falls off.
In one embodiment of the present invention, when the anoxic aeration system 8 is turned on after the biological membrane on the suspended mobile filler 5 in the anoxic membrane tank 1 is aged, and the aged biological membrane is removed, the volume ratio of the air inflow of the anoxic aeration system 8 to the water inflow of the anoxic membrane tank 1 is preferably (10-20): 1, more preferably 20; the duration is preferably from 1 to 3 hours, more preferably 2 hours. In the examples of the invention, the volume ratio is in particular 20.
In one embodiment of the invention, the dissolved oxygen in the aerobic membrane tank 2 is preferably 0.5-4 mg/L, and more preferably 2mg/L; in the examples of the present invention, the dissolved oxygen was specifically 2mg/L. In the invention, the volume ratio of the air inflow to the water inflow in the aerobic membrane tank 2 is preferably (3-10): 1, and more preferably 5).
In an embodiment of the present invention, when the aeration amount of the aerobic aeration system 13 is increased after the biological membrane on the fixed fiber filler 9 in the aerobic membrane tank 2 is aged, and the aged biological membrane is removed, the specific operation of increasing the aeration amount of the aerobic aeration system 13 is preferably to increase the volume ratio of the air intake amount to the water intake amount in the aerobic membrane tank 2, wherein the volume ratio is preferably (5 to 20): 1, more preferably 9.
In one embodiment of the invention, the anoxic membrane and the aerobic membrane pool only depend on microorganisms in the biological membrane, a sludge backflow system is not provided, and the concentration of suspended sludge in the system can be less than 100mgMLVSS/L.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a biological denitrification treatment method for sewage, which adopts a full-membrane biological denitrification treatment device for sewage, and the device comprises an anoxic membrane tank 1, an aerobic membrane tank 2, an MBR (membrane bioreactor) membrane system 3 and a reflux system 4; the anoxic membrane tank 1, the aerobic membrane tank 2 and the MBR membrane system 3 are sequentially connected; two ends of the reflux system 4 are respectively connected with the anoxic membrane tank 1 and the aerobic membrane tank 2; the anoxic membrane tank 1 comprises a flow impeller 6, a water inlet pipe 7, an anoxic aeration system 8 and a suspended mobile filler 5; the flow pushing direction of the flow pusher 6 is opposite to the air outlet direction of the anoxic aeration system 8; the aerobic membrane tank 2 comprises a fixed fiber filler 9 and an aerobic aeration system 13 positioned right below the fixed fiber filler 9. The invention takes the biological membrane as a carrier, and enriches and cultures different microorganisms in different environments respectively, thereby realizing the improvement of the abundance of the microorganisms and being beneficial to the improvement of the nitrogen conversion efficiency. Meanwhile, aiming at heterotrophic microorganisms which grow fast in an anoxic zone, a movable suspended movable filler is adopted as a carrier, so that the mutual friction probability is increased, and an anoxic aeration system which can generate convection with the flow pushing direction of a flow pusher is additionally arranged to strengthen the falling of an aged biological membrane and ensure the activity of the biological membrane for degrading pollutants; aiming at autotrophic microorganisms with slower growth in an aerobic zone, the fixed fiber filler is used as a carrier, which is beneficial to the efficient enrichment of the microorganisms, the aeration system is arranged at the bottom, which is beneficial to the scouring of gas on an aged biological membrane on the fixed fiber filler, the activity of the biological membrane in the aerobic zone is ensured, and meanwhile, the denitrification of the biological membrane in the aerobic zone is not dependent on suspended sludge, so that the concentration of suspended solids in water is reduced, the return abrasion of nitrified liquid is reduced, and the water doping amount and the service life of an MBR membrane are increased.
Drawings
FIG. 1 is a diagram of the full-membrane biological denitrification treatment device for sewage, wherein the full-membrane biological denitrification treatment device comprises a 1-anoxic membrane tank, a 2-aerobic membrane tank, a 3-MBR membrane system, a 4-reflux system, 5-suspended movable filler, 6-impeller, 7-water inlet pipe, 8-anoxic aeration system, 9-fixed fiber filler, 10-air inlet pipe, 11-old biological membrane outlet, 12-water outlet and 13-aerobic aeration system.
Fig. 2 is a physical diagram of the polyethylene moving film suspended moving filler described in example 1.
Fig. 3 is a physical diagram of the fixed fibrous filler described in example 1.
Fig. 4 is a diagram of a combination of the polyethylene moving film filler and the sponge film according to the present invention.
Detailed Description
Example 1
The full-film biological denitrification treatment device for sewage as shown in figure 1, wherein the volume of the anoxic film tank 1 is 1m 3 Polyethylene moving film suspended moving filler (as shown in figure 2) is added into the anoxic film tank 1, and the filling degree is 40%; the volume of the aerobic membrane tank 2 is 5m 3 The aerobic membrane tank 2 is added with fixed fiber filler (as shown in figure 3)Shown), the filling degree is 60 percent; an ultrafiltration membrane is arranged in the MBR membrane system 3; the reflux system 4 adopts a reflux pump for reflux, and the reflux ratio is 4;
the sewage treatment process comprises the following steps:
sewage to be treated: the ammonia nitrogen concentration is 100mg/L, and the COD concentration is 500mg/L;
closing the anoxic aeration system 8, starting the flow pushing device 6 and the aerobic aeration system 13, sequentially feeding sewage to be treated into the anoxic membrane tank 1 from the water inlet pipe 7 for anoxic treatment and aerobic treatment of the aerobic membrane tank 2, refluxing a part of nitrified liquid obtained after the aerobic treatment to the anoxic membrane tank 1 through the reflux system 4, treating the rest part of nitrified liquid through the MBR membrane system 3 to realize sludge-water separation without sludge reflux, wherein the concentration of suspended sludge (MLVSS) of the system is less than 80mg/L, the COD concentration in effluent of the MBR membrane system 3 is 33mg/L, the concentration of nitrate is 5mg/L, the total nitrogen concentration is 10mg/L, the total nitrogen removal rate is 90%, and the total nitrogen removal rate reaches 1.5 kg/(m) at 90% 3 D) (the total nitrogen removal rate is the total nitrogen removal time divided by the residence time);
after the biological membrane on the suspended mobile filler 5 in the anoxic membrane pool 1 is aged, opening an anoxic aeration system 8 to make the aged biological membrane fall off, wherein the volume ratio of the air inflow of the anoxic aeration system 8 to the water inflow of the anoxic membrane pool 1 is 20, and the duration is 2h;
when the biological membrane on the fixed fiber filler 9 in the aerobic membrane tank 2 is aged, increasing the aeration rate of the aerobic aeration system 13 to make the aged biological membrane fall off, wherein the volume ratio of the air inflow to the water inflow in the aerobic membrane tank 2 is 9;
after the treatment process is operated for 360 days, the polyethylene moving film suspended moving filler of the anoxic film tank 1 and the biological film on the fixed fiber filler of the aerobic film tank 2 both have stronger nitrogen conversion activity, and the denitrification capability of the anoxic film tank 1 reaches 5 kg/(m) 3 D), the nitrification capacity of the aerobic membrane tank 2 reaches 2 kg/(m) 3 D); the water production rate of the MBR membrane system was still maintained at 80%.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (10)
1. A biological denitrification treatment method for sewage is characterized in that a full-membrane biological denitrification treatment device for sewage, which comprises an anoxic membrane tank (1), an aerobic membrane tank (2), an MBR (membrane bioreactor) membrane system (3) and a reflux system (4), is adopted for biological denitrification;
the anoxic membrane tank (1), the aerobic membrane tank (2) and the MBR membrane system (3) are sequentially connected;
two ends of the reflux system (4) are respectively connected with the anoxic membrane pool (1) and the aerobic membrane pool (2);
the anoxic membrane tank (1) comprises a flow impeller (6), a water inlet pipe (7), an anoxic aeration system (8) and a suspended mobile filler (5); the flow pushing direction of the flow pusher (6) is opposite to the air outlet direction of the anoxic aeration system (8);
the aerobic membrane tank (2) comprises a fixed fiber filler (9) and an aerobic aeration system (13) positioned right below the fixed fiber filler (9).
2. The biological denitrification treatment method for wastewater according to claim 1, wherein the filling degree of the suspended moving filler (5) in the anoxic membrane tank (1) is 40-60%.
3. The biological denitrification treatment method for sewage according to claim 1, wherein the suspended mobile filler (5) is a polyethylene mobile film filler, a sponge film or a combination of the polyethylene mobile film filler and the sponge film.
4. The biological denitrification treatment method for sewage according to claim 1, wherein the degree of filling of the fixed fiber filler (9) in the aerobic membrane tank (2) is 40-60%.
5. The biological nitrogen removal treatment method for sewage according to any one of claims 1 to 4, wherein the anoxic membrane tank (1) and the aerobic membrane tank (2) are constructed in common wall.
6. The biological denitrification treatment process for sewage according to claim 1, wherein the aerobic aeration system (13) and the anoxic aeration system (8) employ microporous aeration conduits.
7. The biological denitrification treatment method for sewage according to claim 1, wherein the MBR membrane system (3) is an external membrane.
8. The biological denitrification treatment method for sewage according to claim 1, wherein the reflux system (4) employs a gas lift reflux or a reflux pump reflux.
9. The biological nitrogen removal treatment process for wastewater according to any one of claims 1 to 4 or 6 to 8, wherein the treatment process comprises the steps of:
closing the anoxic aeration system (8), starting the flow pushing device (6) and the aerobic aeration system (13), sequentially feeding sewage into the anoxic membrane tank (1) from the water inlet pipe (7) for anoxic treatment and the aerobic membrane tank (2) for aerobic treatment, refluxing a part of nitrified liquid obtained after the aerobic treatment to the anoxic membrane tank (1) through the reflux system (4), and treating the rest part through the MBR membrane system (3) to realize sludge-water separation;
after the biological membrane on the suspended mobile filler (5) in the anoxic membrane tank (1) is aged, opening an anoxic aeration system (8) to enable the aged biological membrane to fall off;
when the biological membrane on the fixed fiber filler (9) in the aerobic membrane tank (2) is aged, the aeration amount of the aerobic aeration system (13) is instantly increased, so that the aged biological membrane falls off.
10. Use of the treatment method according to any one of claims 1 to 4 or 6 to 8 for biological denitrification of wastewater.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1012121A1 (en) * | 1997-01-30 | 2000-06-28 | Scanvironment AB | Process, using ammonia rich water for the selection and enrichment of nitrifying micro-organisms for nitrification of wastewater |
| CN101050025A (en) * | 2007-03-30 | 2007-10-10 | 南京大学 | Aeration bio filter in U shaped flow |
| CN106315847A (en) * | 2016-11-14 | 2017-01-11 | 安徽华骐环保科技股份有限公司 | Immobilization filler biomembrane activation and updating and sludge resuspension method |
| CN109485153A (en) * | 2018-12-19 | 2019-03-19 | 清华-伯克利深圳学院筹备办公室 | A kind of biofilm reactor and method of wastewater efficient denitrogenation |
| CN210367147U (en) * | 2019-05-31 | 2020-04-21 | 浦华环保有限公司 | MBR sewage treatment plant |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092841B (en) * | 2010-12-09 | 2012-08-22 | 扬州大学 | Pulse aeration biological contact oxidation water treatment device |
| CN210915520U (en) * | 2019-11-21 | 2020-07-03 | 山东优唯环保服务有限公司 | Sewage treatment device based on suspended filler biomembrane technology |
| CN112010514A (en) * | 2020-10-19 | 2020-12-01 | 湖南湘新水务环保投资建设有限公司 | Membrane biological treatment system |
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- 2021-01-28 CN CN202211027296.7A patent/CN115448456A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1012121A1 (en) * | 1997-01-30 | 2000-06-28 | Scanvironment AB | Process, using ammonia rich water for the selection and enrichment of nitrifying micro-organisms for nitrification of wastewater |
| CN101050025A (en) * | 2007-03-30 | 2007-10-10 | 南京大学 | Aeration bio filter in U shaped flow |
| CN106315847A (en) * | 2016-11-14 | 2017-01-11 | 安徽华骐环保科技股份有限公司 | Immobilization filler biomembrane activation and updating and sludge resuspension method |
| CN109485153A (en) * | 2018-12-19 | 2019-03-19 | 清华-伯克利深圳学院筹备办公室 | A kind of biofilm reactor and method of wastewater efficient denitrogenation |
| CN210367147U (en) * | 2019-05-31 | 2020-04-21 | 浦华环保有限公司 | MBR sewage treatment plant |
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