CN201962122U - Handle the real-time control device of low C/N sewage aerobe membrane A2O technology - Google Patents
Handle the real-time control device of low C/N sewage aerobe membrane A2O technology Download PDFInfo
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- CN201962122U CN201962122U CN201120028828XU CN201120028828U CN201962122U CN 201962122 U CN201962122 U CN 201962122U CN 201120028828X U CN201120028828X U CN 201120028828XU CN 201120028828 U CN201120028828 U CN 201120028828U CN 201962122 U CN201962122 U CN 201962122U
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Abstract
The utility model discloses the real-time control device of handling low C/N sewage aerobe membrane A2O technology. The real-time control device of aerobe membrane A2O technology comprises former water tank (1), aerobe membrane A2O reactor (2), two heavy pond (3), DO appearance (5), on-line testing appearance (6), computer (7) and process controller (8); former water tank (1) divides two to be connected with anoxic zone (11) and anaerobism district (12) in advance through peristaltic pump (9), and anaerobism district (12) is connected with anoxic zone (13), and anoxic zone (13) distinguishs (14) with good oxygen and are connected, and good oxygen is distinguished (14) mixture exit end and is passed through peristaltic pump (9) and is connected with anoxic zone (13), and good oxygen is distinguished (14) and is connected with two heavy pond (3), and the sludge outlet is held and is connected through peristaltic pump (9) and anoxic zone (11) in advance bottom two heavy pond (3), and mud discharge port (16) emission is followed to the excess sludge. The problem of gathering phosphorus fungus and nitrobacteria mud contradiction in age in the A2O technology can be solved to this utility model.
Description
Technical field
The utility model belongs to sewage treatment area, is specifically related to the low C/N sewage aerobic microbial film A of a kind of processing
2The real-time control apparatus of O technology.
Background technology
The excessive emissions of nutritive elements such as nitrogen phosphorus is the major reason that causes water body " eutrophication ", and it has constituted serious threat for industrial and agricultural production and people's lives.A
2O has series of advantages such as simple structure, HRT weak point, design and operation experience maturation, the little and difficult generation sludge bulking of control complicacy as the simplest synchronous denitrogen dephosphorus technology, is the main process of China's municipal wastewater treatment plant.Yet, A
2Nitrifier among the O, denitrifying bacteria and the polyP bacteria contradiction on organic loading, mud age and carbon source demand is difficult to obtain simultaneously in the single biochemical system good result of denitrogenation dephosphorizing, hampers the biological carbon and phosphorous removal The Application of Technology.Carbon source is to influence one of important factor of sewage disposal, and the obvious characteristics of China's municipal effluent is exactly low C/N, this just require will low C/N sanitary sewage carry out the denitrogenation dephosphorizing of the degree of depth.Nearly all synchronous denitrogen dephosphorus technology all is that single sludge system is that different physiological habit microorganisms such as nitrobacteria, denitrifying bacterium and polyP bacteria live in the same microbial environment.Environmental requirement microorganism inequality is lived in together, can't guarantee that they can grow up under the optimum environment separately, this must influence treatment effect.Be apparent that most that polyP bacteria requires to make that to the different of sludge age denitrogenation and dephosphorization form the contradiction of opposition with nitrobacteria, often becomes the low major cause of efficient instability, compliance rate of single sludge system synchronous denitrification dephosphorizing.
At A
2The existing defective of O technology has proposed to handle low C/N sewage aerobic microbial film A
2The real-time control apparatus of O technology, this technology is put into aerobic section with biologic packing material, and its main purpose is effectively to finish nitrification.
The utility model content
The purpose of this utility model is to provide a kind of processing to hang down C/N sewage aerobic microbial film A
2O (Floated aerobicbiofilm A
2O system) real-time control apparatus of technology solves the advanced nitrogen dephosphorization technique that hangs down the C/N sanitary sewage.
Mechanism of the present utility model is: former water enters pre-oxygen-starved area and anaerobic zone in two separate ranks simultaneously, in pre-oxygen-starved area, TOC quilt in the former water is from the denitrifying bacteria utilization in the returned sluge of second pond, denitrifying bacteria is electron donor with TOC, with the nitrate nitrogen is electron acceptor(EA), denitrification takes place, and nitrate nitrogen is converted into nitrogen, fully releases phosphorus for mud at anaerobic zone condition is provided; At anaerobic zone, polyP bacteria utilizes the synthetic internal carbon source PHAs of the voltaile fatty acid (VFAs) in the former water and is stored in the body, discharges a large amount of phosphorus simultaneously; Mixed solution enters the oxygen-starved area, and what enter simultaneously also has nitrification liquid from the aerobic zone end, and denitrifying bacteria is an electron acceptor(EA) with nitrate nitrogen and nitrite nitrogen, is electron acceptor(EA) with TOC, denitrification denitrogenation; DPAOs is an electron acceptor(EA) with nitrate and nitrosonium salts nitrogen, is the electron donor denitrification dephosphorization with PHAs, has realized " carbon is dual-purpose ", has saved 50% TOC; Mixed solution enters aerobic zone, and the major function of aerobic zone is that the nitrifier on the aerobic biologic membrane is oxidized to nitrite nitrogen and nitrate nitrogen, the remaining phosphorus of removal and remaining TOC with ammonia nitrogen; Aerobic zone goes out water mixed liquid and enters second pond and carry out mud-water separation.
The technical solution of the utility model: the aerobic biologic membrane A that handles low C/N municipal effluent
2The real-time control apparatus of O technology is by raw water box 1, A
2O reactor 2, second pond 3, water tank 4, DO instrument 5, on-line testing instrument 6, computer 7 and process controller 8 constitute.Raw water box 1 is connected with anaerobic zone 12 with pre-oxygen-starved area 11 in two separate ranks through peristaltic pump 9, anaerobic zone 12 is connected with oxygen-starved area 13, oxygen-starved area 13 is connected with aerobic zone 14, aerobic zone 14 mixture export ends are connected with oxygen-starved area 13 by peristaltic pump 9, aerobic zone 14 is connected with second pond 3, second pond 3 bottom sludge outlet ends are connected with pre-oxygen-starved area 11 through peristaltic pump 9, and excess sludge is from 16 dischargings of mud discharging mouth; Real-time control system by DO instrument 5, on-line testing instrument (test out ammonia nitrogen concentration in the water tank, nitrite nitrogen concentration, nitric nitrogen concentration,
Concentration and TOC concentration), computer 7 and process controller 8 constitute; Online survey instrument is installed in the water tank 4, and the DO instrument is connected with computer 7 with the on-line testing instrument, and computer 7 is connected with process controller 8, and process control is that device 8 is connected with peristaltic pump 9 and air pump 10.
Aerobic biologic membrane by-pass flow A
2The real-time control method of O technology may further comprise the steps:
1) former water pumps into A through peristaltic pump 9 respectively in two separate ranks from raw water box 1
2The pre-oxygen-starved area 11 of O reactor 2 and anaerobic zone 12, enter into the returned sluge of also having of pre-oxygen-starved area 11 simultaneously from second pond 3, remove at the nitric nitrogen that pre-oxygen-starved area denitrifying bacteria carries in returned sluge, in order to avoid influence the phosphorus effect of releasing of anaerobic zone, its by-pass flow ratio that enters into pre-oxygen-starved area 11 and anaerobic zone 12 is by real-time control system adjustment (the by-pass flow ratio is 1: 9 or 2: 8 or 3: 7).At anaerobic zone 12, polyP bacteria absorbs the organism in the former water, and is stored in its organism with the form of PHAs, discharges a large amount of phosphorus simultaneously.
2) mixed solution of anaerobic zone 12 enters oxygen-starved area 13, enters the nitrification liquid from aerobic zone 14 ends of also having of oxygen-starved area 13 simultaneously, and what finish in this stage is that denitrification and anoxic are inhaled the phosphorus effect.
3) mixed solution of oxygen-starved area 13 enters aerobic zone 14 subsequently, and the main effect in this stage is a nitrification, and further absorbs the oxygen-starved area and do not suck remaining phosphorus, removes 2%～5% organism simultaneously.
4) mixed solution from aerobic zone 14 enters second pond 3, realizes the mud-water separation of mixed solution, the supernatant liquor discharging.
5) on-line testing instrument 6 respectively the ammonia nitrogen concentration in the online acquisition water tanks 4, nitrous acid nitrogen concentration, nitric nitrogen concentration,
Concentration and TOC concentration, by computer 7 control process controllers 8, adjust the aeration rate of air pump 10 and the reflux ratio of peristaltic pump 9:
5.1) ammonia nitrogen concentration in the on-line testing instrument 6 online acquisition water tanks 4, by computer 7 control process controllers 8, adjust the aeration rate of air pump 10; As ammonia nitrogen concentration 〉=1mgL
-1The time, strengthen aeration rate, make that DO is 2.0～3.0mgL in aerobic zone 14 ends
-1, as ammonia nitrogen concentration≤0.1mgL
-1The time, the minimizing aeration rate is 1.0～2.0mgL
-1
5.2) nitrous acid nitrogen concentration in the on-line testing instrument 6 online acquisition water tanks 4, by computer 7 control process controllers 8, adjust the aeration rate of air pump 10; As nitrous acid nitrogen concentration 〉=0.5mgL
-1The time, strengthen aeration rate, make that DO is 2.0～3.0mgL in aerobic zone 14 ends
-1, as nitrous acid nitrogen concentration≤0.5mgL
-1The time, the minimizing aeration rate is 1.0～2.0mgL
-1
5.3) nitric nitrogen concentration in the on-line testing instrument 6 online acquisition water tanks 4, by computer 7 control process controllers 8, adjust the nitrification liquid reflux ratio of peristaltic pump 9, as nitric nitrogen concentration 〉=13mgL
-1The time, strengthening reflux ratio is 300%～400%, as nitric nitrogen concentration≤6.0mgL
-1The time, reduce reflux ratio 100%～200%;
5.4) PO in the on-line testing instrument 6 online acquisition water tanks 4
4 3--P concentration by computer 7 control process controllers 8, is adjusted peristaltic pump 9, works as PO
4 3--P concentration 〉=1.0mgL
-1The time, the by-pass flow ratio was increased to 2: 8 by 1: 9, worked as PO
4 3--P concentration≤0.1mgL
-1The time, make by-pass flow than being reduced to 2: 8 by 3: 7.
The utility model is handled low C/N sewage aerobic microbial film A
2The real-time control apparatus of O technology is compared with existing advanced nitrogen dephosphorization technique, has following advantage:
1) nitrification of this technology is mainly finished on biologic packing material, and dephosphorization has solved the nitrobacteria contradiction different to the sludge age requirement with polyP bacteria then by Sludge System, grows in each comfortable best environment that makes them, helps the stable of system.
2) Prepositive denitrification of technology is configured to denitrification dephosphorization condition is provided, and has solved the technical difficult problem that carbon source lacks in the low C/N sewage treatment process, saves TOC to greatest extent, under the prerequisite that guarantees water quality treatment, has reduced running cost.
3) design of the structure of by-pass flow ratio has guaranteed that the nitrate nitrogen in the returned sluge, nitrite nitrogen are effectively removed in pre-oxygen-starved area, for polyP bacteria provides absolute anaerobic environment at the phosphorus of fully releasing of anaerobic zone.
4) when handling the sanitary sewage of low C/N, A
2O technology can provide an adapt circumstance to denitrifying phosphorus removing bacteria, and denitrification dephosphorization will be the principal mode of system's dephosphorization, can save TOC.
5) traditional A
2The very long aerobic zone of O arts demand carries out nitrification, its generation time of mainly considering nitrobacteria is longer, and the nitrification of this technology is mainly carried out on the biologic packing material in aerobic zone, thereby has reduced the length of aerobic zone, reduce aeration rate, reduced energy consumption.
6) ammonia nitrogen concentration in the on-line testing instrument on-line monitoring water tank guaranteeing to adjust aeration rate in real time under the water outlet ammonia nitrogen prerequisite up to standard, has reduced aeration energy consumption; Also can go out simultaneously the DO concentration of aerobic zone end by DO instrument on-line monitoring, adjust aeration rate in real time, further optimize real-time control strategy.
7) nitric nitrogen, nitrous acid nitrogen concentration in the on-line testing instrument on-line monitoring water tank guaranteeing that water outlet satisfies under the prerequisite of emission standard, are adjusted the nitrification liquid reflux ratio in real time, and the energy avoids waste.
8) in the on-line testing instrument on-line monitoring water tank
Concentration is in water outlet
P concentration satisfies under the condition of emission standard, controls the nitrification liquid ratio of by-pass flow when that refluxes in real time, has saved the energy.
9) real-time control system is simple in structure, the level of automation height, and management maintenance is convenient, and labour intensity is low, for the upgrading of municipal sewage plant provides direction.
The beneficial effects of the utility model:
Adopt and handle low C/N sewage aerobic microbial film A
2The real-time control apparatus of O technology can solve A
2The problem of polyP bacteria and nitrobacteria sludge age contradiction in the O technology.Filler is placed A
2The aerobic zone of O technology, nitrobacteria can be attached on the biologic packing materials, thereby can effectively prolong the sludge age of nitrobacteria, and then improve nitrated rate.The residence time that can reduce aerobic zone simultaneously promptly reduces the length of aerobic zone.The utility model is handled low C/N sewage aerobic microbial film A
2The real-time control apparatus of O technology can be widely used in the sanitary sewage disposal in large, medium and small city, and the transformation and the optimization and upgrading of old water factory had certain reference value, and the advanced nitrogen dephosphorization of sewage provides effective theoretical foundation under the low C/N condition.
Description of drawings
Fig. 1 handles low C/N sewage aerobic microbial film A
2The real-time control apparatus synoptic diagram of O technology;
1-inlet chest among Fig. 1; 2-A
2The O system; The 3-second pond; The 4-water tank; The 5-DO instrument; 6-on-line testing instrument; The 7-computer; The 8-process controller; The 9-peristaltic pump; The 10-air pump; The pre-oxygen-starved area of 11-; The 12-anaerobic zone; 13-oxygen-starved area 1; The 14-aerobic zone; The 15-agitator; 16-excess sludge discharge mouth; 17-active bio filler.
Embodiment
In conjunction with Fig. 1, describe working procedure of the present utility model in detail
C/N sewage aerobic microbial film A is hanged down in a kind of processing
2The real-time control apparatus of O technology is by raw water box 1, aerobic biologic membrane A
2O reactor 2, second pond 3, water tank 4, DO instrument 5, on-line testing instrument 6, computer 7 and process controller 8 constitute.Raw water box 1 is connected with anaerobic zone 12 with pre-oxygen-starved area 11 in two separate ranks through peristaltic pump 9, anaerobic zone 12 is connected with oxygen-starved area 13, oxygen-starved area 13 is connected with aerobic zone 14, aerobic zone 14 exit end are connected with oxygen-starved area 13 by peristaltic pump 9, aerobic zone 14 is connected with second pond 3, second pond 3 bottom sludge outlet ends are connected with pre-oxygen-starved area 11 through peristaltic pump 9, and excess sludge is from 16 dischargings of mud discharging mouth; Real-time control system by DO instrument 5, on-line testing instrument 6 (test out ammonia nitrogen concentration in the water tank, nitrite nitrogen concentration, nitric nitrogen concentration,
Concentration and TOC concentration), computer 7 and process controller 8 constitute; The on-line testing instrument is installed in the water tank 4, and the DO instrument is connected with computer 7 with the on-line testing instrument, and computer 7 is connected with process controller 8, and process controller 8 is connected with peristaltic pump 9 and air pump 10.
Aerobic biologic membrane A
2The real-time control method of O technology may further comprise the steps:
1) former water pumps into A through peristaltic pump 9 respectively in two separate ranks from raw water box 1
2The pre-oxygen-starved area 11 of O reactor 2 and anaerobic zone 12, enter into the returned sluge of also having of pre-oxygen-starved area 11 simultaneously from second pond 3, in pre-oxygen-starved area, denitrifying bacteria is removed the nitric nitrogen that carries in the returned sluge, in order to avoid influence the phosphorus effect of releasing of anaerobic zone, its by-pass flow ratio that enters into pre-oxygen-starved area 11 and anaerobic zone 12 is by real-time control system adjustment (the by-pass flow ratio is 1: 9 or 2: 8 or 3: 7).At anaerobic zone 12, polyP bacteria absorbs the TOC in the former water, and is stored in its organism with the form of PHAs, discharges a large amount of phosphorus simultaneously.
2) mixed solution of anaerobic zone 12 enters oxygen-starved area 13, enters the nitrification liquid from aerobic zone 14 ends of also having of oxygen-starved area 13 simultaneously, and what finish in this stage is that denitrification and anoxic are inhaled the phosphorus effect.
3) aerobic zone 14 that enters subsequently of the mixed solution of oxygen-starved area 13, the main effect in this stage is a nitrification, and further absorbs the oxygen-starved area and do not suck remaining phosphorus, removes 2%～5% organism simultaneously.
4) mixed solution from aerobic zone 14 process sections enters second pond 3, realizes the mud-water separation of mixed solution, the supernatant liquor discharging.
5) ammonia nitrogen concentration in the on-line testing instrument 6 online acquisition water tanks 4 by computer 7 control process controllers 8, is adjusted the aeration rate of air pump 10; As ammonia nitrogen concentration 〉=1mgL
-1The time, strengthen aeration rate, making aerobic zone 14 terminal DO is 2.0～3.0mgL
-1, as ammonia nitrogen concentration≤0.1mgL
-1The time, reduce aeration rate, making DO is 1.0～2.0mgL
-1
6) the nitrous acid nitrogen concentration in the on-line testing instrument 6 online acquisition water tanks 4 by computer 7 control process controllers 8, is adjusted the aeration rate of air pump 10; As nitrous acid nitrogen concentration 〉=0.5mgL
-1The time, strengthen aeration rate, making aerobic zone 14 terminal DO is 2.0～3.0mgL
-1, as nitrous acid nitrogen concentration≤0.5mgL
-1The time, reduce aeration rate, making DO is 1.0～2.0mgL
-1
7) the nitric nitrogen concentration in the on-line testing instrument 6 online acquisition water tanks 4 by computer 7 control process controllers 8, is adjusted the nitrification liquid reflux ratio of peristaltic pump 9, as nitric nitrogen concentration 〉=13mgL
-1The time, strengthening reflux ratio is 300%～400%, as nitric nitrogen concentration≤6.0mgL
-1The time, reduce reflux ratio 100%～200%;
8) in the on-line testing instrument 6 online acquisition water tanks 4
Concentration by computer 7 control process controllers 8, is adjusted peristaltic pump 9, when
Concentration 〉=1.0mgL
-1The time, the by-pass flow ratio was increased to 2: 8 by 1: 9, when
Concentration≤0.1mgL
-1The time, by-pass flow is than being reduced to 2: 8 by 3: 7.
With the real life sewage of certain university teaching and administrative staff residential quarters discharging as subjects (pH=6.4～7.5, TOC=60～110mg/L, ammonia nitrogen concentration=50～75mg/L,
Average C/N is than 3.8).A
2O is made of 9 lattice chambers, and total useful volume is 30.5L, and first lattice chamber is pre-oxygen-starved area, subsequently 2 is anaerobic zone, the anaerobic zone back is 2 oxygen-starved areas, and remaining 4 is aerobic zone, and the volumetric ratio of promptly pre-oxygen-starved area, anaerobic zone, oxygen-starved area and aerobic zone is 1: 2: 2: 4.A
215.2 ℃ of the water inlet medial temperatures of O, flooding quantity is 3.8L/h, and DO is controlled at 3mg/L, and corresponding HRT is 8h, and MLSS is about about 4000mg/L, and SRT is 15d, and nitrification liquid refluxes 200%, and mud refluxes 100%.TOC≤15mg/L, TN in the final outflow water (ammonia nitrogen+nitrate nitrogen+nitrite nitrogen)≤15mg/L,
Reach country-level (A) emission standard.
Claims (1)
1. handle low C/N sewage aerobic microbial film A for one kind
2The real-time control apparatus of O technology comprises raw water box (1), A
2O reactor (2), second pond (3) and real-time control system, it is characterized in that, raw water box (1) is connected with anaerobic zone (12) with pre-oxygen-starved area (11) in two separate ranks through peristaltic pump (9), anaerobic zone (12) is connected with oxygen-starved area (13), oxygen-starved area (13) is connected with aerobic zone (14), aerobic zone (14) mixture export end is connected with oxygen-starved area (13) by peristaltic pump (9), aerobic zone (14) is connected with second pond (3), second pond (3) bottom sludge outlet end is connected with pre-oxygen-starved area (11) through peristaltic pump (9), and excess sludge discharges from mud discharging mouth (16); Described real-time control system is by DO instrument (5), on-line testing instrument (6), computer (7) and process controller (8) constitute, wherein the on-line testing instrument is installed in the water tank (4), DO instrument (5) is connected with computer (7) with Online Transaction Processing (6), computer (7) is connected with process controller (8), and process controller (8) is connected with peristaltic pump (9) and air pump (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120028828XU CN201962122U (en) | 2011-01-27 | 2011-01-27 | Handle the real-time control device of low C/N sewage aerobe membrane A2O technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120028828XU CN201962122U (en) | 2011-01-27 | 2011-01-27 | Handle the real-time control device of low C/N sewage aerobe membrane A2O technology |
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| CN201962122U true CN201962122U (en) | 2011-09-07 |
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ID=44524658
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344198A (en) * | 2011-01-27 | 2012-02-08 | 北京工业大学 | Real-time control apparatus for floated aerobic biofilm A<2>O system for treating low C/N sewage, and method thereof |
| CN105800875A (en) * | 2016-05-05 | 2016-07-27 | 东莞市恒升环保科技有限公司 | Living sewage integrated treatment device and treatment method |
| CN106045033A (en) * | 2016-07-10 | 2016-10-26 | 北京工业大学 | A2/O-UASB continuous flow integrated anaerobic ammonia oxidation coupling denitrifying phosphorus removal device and real-time control method |
-
2011
- 2011-01-27 CN CN201120028828XU patent/CN201962122U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344198A (en) * | 2011-01-27 | 2012-02-08 | 北京工业大学 | Real-time control apparatus for floated aerobic biofilm A<2>O system for treating low C/N sewage, and method thereof |
| CN102344198B (en) * | 2011-01-27 | 2014-01-01 | 北京工业大学 | Real-time control apparatus for floated aerobic biofilm A<2>O system for treating low C/N sewage, and method thereof |
| CN105800875A (en) * | 2016-05-05 | 2016-07-27 | 东莞市恒升环保科技有限公司 | Living sewage integrated treatment device and treatment method |
| CN106045033A (en) * | 2016-07-10 | 2016-10-26 | 北京工业大学 | A2/O-UASB continuous flow integrated anaerobic ammonia oxidation coupling denitrifying phosphorus removal device and real-time control method |
| CN106045033B (en) * | 2016-07-10 | 2018-10-19 | 北京工业大学 | A2/ O-UASB continuous flow integral anaerobic ammoxidation coupling denitrification dephosphorization apparatus and real-time control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180411 Address after: 523808 West Dongguan Road, Songshan, Hubei, Guangdong, three Patentee after: Dongguan Songshan Lake Tiandi water supply Co., Ltd. Address before: 100124 Chaoyang District, Beijing Ping Park, No. 100 Patentee before: Beijing University of Technology |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110907 |
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| CX01 | Expiry of patent term |