CN105152454A - Experimental apparatus and method coupling SBR shortcut denitrification phosphorus removal and anaerobic ammonium oxidation - Google Patents
Experimental apparatus and method coupling SBR shortcut denitrification phosphorus removal and anaerobic ammonium oxidation Download PDFInfo
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Abstract
Belonging to the technical field of municipal domestic sewage biological treatment, the invention provides an apparatus and method coupling SBR shortcut denitrification phosphorus removal and anaerobic ammonium oxidation. The apparatus is mainly composed of a raw water tank, an A2/O-SBR denitrification phosphorus removal reactor, an N-SBR shortcut nitrification reactor, a middle water tank, and an anaerobic ammonium oxidation reactor. According to the method, three independent SBR reactors are designed to create a micro-ecological environment beneficial to denitrification phosphorus removal bacteria, nitrite bacteria and anaerobic ammonium oxidation bacteria, coordinated and coupling effects of the three functional bacteria in the aspect of nitrogen and phosphorus removal can be realized, thus achieving deep nitrogen and phosphorus removal. The apparatus and method provided by the invention give full play to the advantages of denitrification phosphorus removal, shortcut nitrification and anaerobic ammonium oxidation autotrophic nitrogen removal technologies, have the advantages of saving carbon source and aeration quantity, low sludge yield and the like, are suitable for low C/N ratio domestic sewage, and can achieve the effect of synchronous deep nitrogen and phosphorus removal.
Description
Technical field
The testing apparatus of the SBR short-cut denitrification dephosphorization coupling Anammox that the present invention relates to and method, belong to technical field of biological sewage treatment, be particularly useful for the city domestic sewage synchronous denitrification dephosphorizing of low C/N.
Background technology
At present, although domestic wastewater treatment rate improves constantly, the water eutrophication problem caused by nitrogen and phosphorus pollution does not only solve, and has day by day serious trend, have impact on the utilization of water resources, reduces economy and the social value of water function.In addition, take high energy consumption as the raising of the wastewater treatment rate that cost realizes, achieve " pollution reduction " on the one hand, but consume a large amount of electric energy and additional carbon, " greenhouse gases have been arranged in increasing " on the other hand.The sewage work of some developed countries by basic biological carbon and phosphorous removal (BNR) to intensified denitrification and dephosphorization (ENR) and energy-saving and cost-reducing future development.Therefore, for improving the eutrophic state of China's water surrounding, the principal contradiction of stain disease process has been changed into the removal of nitrogen and phosphorus pollution thing by the removal of organic pollutant.
The denitrogenation dephosphorizing of sewage is the focus of sewage research field always, and the research of existing sewage treatment process is also towards future development that is efficient, less energy-consumption.Owing to there is various contradiction in traditional process for removing nitrogen and phosphor from sewage, if: polyP bacteria PAOs and nitrifier are to the competition of DO and sludge age, PAOs and denitrifying bacteria, to the competition of carbon source, make the synchronous denitrification dephosphorizing of sewage be difficult to realize.And in actual application, the deficiency of organic carbon source in water inlet, can be utilized, cause the nitrogen of the sewage work of 95% (WWTPs) and the discharge of phosphorus to be all difficult to reach country-level emission standard A.These contradictions process carbon, nitrogen, phosphorus ratio imbalance and carbon source deficiency municipal effluent (especially south China area) time become particularly evident, carbon source deficiency has become " bottleneck " of existing traditional denitrification dephosphorization technique when processing low ratio of carbon to ammonium municipal effluent.Therefore, the synchronous denitrification dephosphorizing novel process researching and developing low C/N city domestic sewage low-consumption high-efficiency is imperative.
Denitrifying Phosphorus Removal Technology represents latest theories and the technology in current sewage denitrification and dephosphorization field, DAPOs is utilized to absorb limited carbon source in sewage, in the mode of " carbon is dual-purpose ", achieve the unification of denitrogenation and dephosphorization process, solve in traditional denitrification dephosphorization technique (as A
2o technique) problem that dephosphorization is not good or denitrogenation is insufficient that exists; It is the approach of nitrogen that short distance nitration and Anammox denitride technology achieve the shortest and efficient mineralized nitrogen, decreases the aeration rate of 25%, and without the need for machine carbon source, does not need to add acid-base neutralisation agent; The advantages such as reduced investment, technique are simple owing to having for sequencing batch reactor (SBR) technique, flexible operation and convenient management, are widely applied in the sewage work of small and medium cities.SBR technique by temporal flexible control, can realize the alternate environment condition of anaerobic/anoxic/good oxygen condition, enhances Biological Phosphorus Removal System.
The SBR short-cut denitrification dephosphorization coupling anaerobic ammonia oxidation process that the present invention announces, by designing three independently sbr reactor devices, create the micro-ecological environment that denitrifying phosphorus removing bacteria, Nitrosomas and anaerobic ammonia oxidizing bacteria are favourable, realize this coordination coupling of three kinds of function yeast in denitrogenation dephosphorizing; By denitrification dephosphorization, DPAOs is utilized effectively to utilize the NO produced in the carbon source in sewage and short distance nitration process
2 --N, makes denitrification and dephosphorization occur simultaneously, realizes " carbon is dual-purpose ", the contradiction that solution denitrifying bacteria and dephosphorization bacterial are competed carbon source; By short distance nitration and Anammox effect, realize the whole process autotrophic denitrification of sanitary sewage, for ensureing high efficiency and the stability of system dephosphorization, reducing aeration rate required in traditional denitrogenation dephosphorizing process, after Denitrifying Phosphorus Removal terminates, carrying out micro-aeration of for some time; The advantages such as the present invention has that treatment effect is stable, reduced investment, technique simple, flexible operation and convenient management.
Summary of the invention
The object of patent of the present invention is to provide the apparatus and method of a kind of SBR short-cut denitrification dephosphorization coupling Anammox, realize the synchronous denitrification dephosphorizing of low ratio of carbon to ammonium municipal effluent stability and high efficiency, solve in traditional denitrification dephosphorization technique and there is carbon source deficiency, denitrogenation and dephosphorization and can not reach the problem such as best simultaneously.
The testing apparatus of SBR short-cut denitrification dephosphorization coupling Anammox provided by the invention, is characterized in that: this system is primarily of sanitary sewage raw water box (1), A
2/ O-SBR denitrification dephosphorizing reactor (2), N-SBR short distance nitration reactor (3), intermediate water tank (4), anaerobic ammonia oxidation reactor (5) connect to form successively; Raw water box (1) is by the first intake pump (6) and water intaking valve (21) and A
2/ O-SBR reactor (2) connects; A
2the outlet valve (22) of/O-SBR reactor is connected with the water intaking valve (23) of N-SBR reactor by the second intake pump (8); The water outlet of N-SBR reactor is connected with intermediate water tank (4) with magnetic valve (10) through outlet valve (24); Intermediate water tank (4) by the 3rd intake pump (11) and reflux pump (20) respectively with anaerobic ammonia oxidation reactor (5) and A
2/ O-SBR reactor (2) connects; The water outlet of system is discharged finally by anaerobic ammonia oxidation reactor outlet valve (26) and magnetic valve (13);
The testing apparatus of SBR short-cut denitrification dephosphorization coupling Anammox, it is characterized in that: A2/O-SBR denitrification dephosphorizing reactor (2) is provided with the first stirring rake (7), the first aeration head (16), the first gas meter (15) and the first upflow tube (27); N-SBR short distance nitration reactor (3) is provided with the second stirring rake (9), the second aeration head (19), the second gas meter (18) and the second upflow tube (28); Anaerobic ammonia oxidation reactor is provided with the 3rd stirring rake (12) and the 3rd upflow tube (29); First gas meter (15) connects the first air pump (14) and the first aeration head (16), and the second gas meter (18) connects the second air pump (17) and the second aeration head (19);
The testing apparatus of SBR short-cut denitrification dephosphorization coupling Anammox, is characterized in that: A
2polyP bacteria in/O-SBR reactor (2) comprises denitrification phosphorus-collecting microorganism and common poly-phosphorus microorganism, and denitrifying bacteria comprises Denitrifying Phosphate Accumulating Organisms and common heterotrophic denitrifying Bacteria.
The test method of SBR short-cut denitrification dephosphorization coupling Anammox provided by the invention, mainly comprises the following steps:
System starts: inoculation denitrification dephosphorization mud in denitrification nitrogen and phosphorus removal sbr reactor device (2), makes sludge concentration in reactor reach 3000 ~ 3500mg/L; In short distance nitration sbr reactor device (3), inoculation short distance nitration floc sludge, makes sludge concentration in reactor reach 3000 ~ 3500mg/L; In Anammox sbr reactor device, inoculate anaerobic ammonium oxidation granular sludge, make sludge concentration reach 3000 ~ 4000mg/L; First sanitary sewage enters A
2o-SBR carries out organic degraded, denitrification nitrogen and phosphorus removal, which removes organism and phosphorus, be rich in the water inlet of water outlet as short distance nitration sbr reactor device of ammonia nitrogen, carry out part short distance nitration, then enter in anaerobic ammonia oxidation reactor and complete autotrophic denitrification, after question response terminates, sedimentation and drawing, when system nitrogen removal rate reaches more than 85%, tp removal rate reaches more than 95%, namely thinks that the coupling integrated Anaerobic ammonium oxidation system of SBR denitrification dephosphorization starts successfully;
Periodic duty operation steps is as follows:
1) sanitary sewage pumps into A by former water tank (1) through intake pump (6)
2/ O-SBR denitrification dephosphorizing reactor (2), water-filling is than 0.3 ~ 0.4; After water inlet end, start stirring rake (7), anaerobism stirs 1.5 ~ 2h, the voltaile fatty acid (VFAs) that Denitrifying Phosphate Accumulating Organisms (DPAOs) makes full use of in former water synthesizes internal carbon source PHA, discharge phosphorus simultaneously, according to the flex point on pH and ORP curve, control the anaerobic phosphorus release time, A
2/ O-SBR denitrification dephosphorizing reactor (2) run time, every day spoil disposal, make sludge age be 10 ~ 15d, sludge concentration maintains 3000 ~ 3500mg/L;
2), after the reaction of anaerobism section terminates, by peristaltic pump (20), the water outlet of N-SBR short-cut denitrification reactor (3) is back to A from intermediate water tank (4)
2in/O-SBR denitrification dephosphorizing reactor (2), for denitrification dephosphorization provides prerequisite; In the process, Denitrifying Phosphate Accumulating Organisms (DPAOs) is with the NO refluxed in nitrification liquid
2 --N is electron acceptor(EA), and with the internal carbon source PHA of anaerobism section storage for electron donor, anoxic denitrification occurs except phosphorus reaction, reflux ratio is 50% ~ 100%, and the reaction times is 3 ~ 4h;
3) after the reaction of anoxic section terminates, open air pump (14) and aeration is carried out to N-SBR reactor (3), complete the absorption of phosphoric residue and the nitrogen of stripping anoxic section denitrification generation, reaction times is 0.5 ~ 1h, by gas meter (15) adjusting gas flow, control DO=2 ~ 3mg/L;
4), after aeration terminates, close air pump (14), quiescent setting draining, draining ratio is 0.6, is rich in NH
4 +the supernatant liquor of-N pumps in N-SBR short distance nitration reactor (3) by intake pump (8), then open air pump (17) and aeration is carried out to N-SBR short distance nitration reactor (3), aeration time is 1.5-2h, aeration rate is regulated by gas meter (18), control DO=1 ~ 2mg/L, when N-SBR short distance nitration reactor (3) runs, carry out spoil disposal, control sludge age at 15 ~ 20d, sludge concentration is at 2500 ~ 3000mg/L;
5) after aeration agitation terminates, quiescent setting draining, draining is than 0.6, the water outlet of N-SBR short distance nitration reactor (3) enters intermediate water tank (4) through outlet valve (24) and magnetic valve (10), then by reflux pump (20) and the 3rd intake pump (11), the water outlet of short distance nitration reactor is pumped into A respectively from intermediate water tank (4)
2in/O-SBR denitrification dephosphorizing reactor and anaerobic ammonia oxidation reactor, volume ratio is 1:2;
6) after nitrification liquid enters anaerobic ammonia oxidation reactor (5), anaerobism stirs 3 ~ 4h, then sedimentation and drawing, and control sludge concentration at 3000 ~ 3500mg/L, draining is than 0.3 ~ 0.4, and then system enters next cycle, repeats above step.
The testing apparatus of SBR short-cut denitrification dephosphorization coupling Anammox of the present invention and method, compared with existing traditional biological denitrification dephosphorization technique, have following advantage:
1) maximization of former water utilization of carbon source rate is achieved.After sanitary sewage enters system, denitrifying phosphorus removing bacteria makes full use of the organism in sewage, and synthesis internal carbon source PHA, discharges phosphorus simultaneously
2) minimizing of sewage disposal carbon source usage quantity is achieved.Denitrifying Phosphorus Removal Technology " carbon is dual-purpose ", achieves the unification of denitrogenation dephosphorizing, and short distance nitration and Anammox react and be autotrophy and react, and do not consume the organic carbon source in former water
3) contradiction of dephosphorization bacterial and denitrifying bacteria carbon source competition in traditional denitrification dephosphorization technique, dephosphorization bacterial and nitrifier length sludge age, dissolved oxygen aspect is solved.By designing three independently sbr reactor devices, denitrifying phosphorus removing bacteria, nitrococcus and anaerobic ammonia oxidizing bacteria should be grown respectively in suitable environment each.
4) technical process is simple, and operational management is convenient.The main body reactor of this technique only has denitrification dephosphorizing reactor, short distance nitration reactor, anaerobic ammonia oxidation reactor; Sbr reactor device operation scheme is flexible, is conducive to real time planning.
5) system run all right, denitrogenation dephosphorizing efficiency is high.Denitrification dephosphorization, short distance nitration, Anammox carry out respectively in three different sbr reactor devices, create the ecotope being conducive to these three kinds of function yeast growths, realize the coordination coupling of three kinds of function yeast in denitrogenation dephosphorizing, be easier to denitrogenation dephosphorizing rate and the operation stability of maintenance system.
6) capital construction and working cost is reduced.The NH contained in the nitrification liquid of backflow
4 +-N, increases the NH that next cycle enters short distance nitration reactor
4 +-N load, improves speed of reaction, shortens the reaction times, thus decreases reactor volume and floor space.Short distance nitration and Anammox achieve the shortest and efficient NH
4 +-N is converted to N
2technology Ways, save aeration rate to greatest extent, reduce sludge yield, reduce running cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of SBR short-cut denitrification dephosphorization coupling anaerobic ammonia oxidation test device
In figure: the former water tank of 1-; 2-A
2/ O-SBR denitrification dephosphorizing reactor; 3-N-SBR short distance nitration reactor; 4-intermediate water tank; 5-anaerobic ammonia oxidation reactor; 6-first intake pump; 7-first stirring rake; 8-second intake pump; 9-second stirring rake; 10-first magnetic valve; 11-the 3rd intake pump; 12-the 3rd stirring rake; 13-second magnetic valve; 14-first air pump; 15-first gas meter; 16-first aeration head; 17-second air pump; 18-second gas meter; 19-second aeration head; 20-reflux pump; 21-first water intaking valve; 22-first outlet valve; 23-second water intaking valve; 24-second outlet valve; 25-the 3rd water intaking valve; 26-the 3rd outlet valve; 27-first upflow tube; 28-second upflow tube; 29-the 3rd upflow tube; 30-the 4th water intaking valve; 31-the one pH sensor; 32-the one ORP sensor; 33-first dissolved oxygen meter; 34-the one NH
4 +-N sensor; 35-the 2nd DO sensor; 36-second dissolved oxygen meter; 37-the 2nd ORP sensor; 38-the 2nd NH
4 +-N sensor; 39-second dissolved oxygen meter; The real-time controlling box of 40-; 41-computer.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described further:
As shown in Figure 1, the testing apparatus of SBR short-cut denitrification dephosphorization coupling Anammox, this system is primarily of former water tank 1, A
2/ O-SBR denitrification dephosphorizing reactor 2, N-SBR short distance nitration reactor 3, intermediate water tank 4, Anammox reaction 5 is connected in sequence.Raw water box (1) is by intake pump (6) and water intaking valve (21) and A
2/ O-SBR reactor (2) connects; A
2the outlet valve (22) of/O-SBR reactor is connected with the water intaking valve (23) of N-SBR reactor by peristaltic pump (8); The water outlet of N-SBR reactor is connected with intermediate water tank (4) with magnetic valve (10) through outlet valve (24); Intermediate water tank (4) by peristaltic pump (11) and peristaltic pump (20) respectively with anaerobic ammonia oxidation reactor (5) and A
2/ O-SBR reactor (2) connects; The water outlet of system is discharged finally by anaerobic ammonia oxidation reactor outlet valve (26) and magnetic valve (13); A
2/ O-SBR denitrification dephosphorizing reactor (2) is provided with stirring rake (7), aeration head (16), gas meter (15) and upflow tube (27); N-SBR short distance nitration reactor (3) is provided with stirring rake (9), aeration head (19), gas meter (18) and upflow tube (28); Anaerobic ammonia oxidation reactor is provided with stirring rake (12); Gas meter (15) connects air pump (14) and aeration head (16), and gas meter (18) connects air pump (17) and aeration head (19);
A
2polyP bacteria in/O-SBR reactor (2) comprises denitrification phosphorus-collecting microorganism and common poly-phosphorus microorganism, and denitrifying bacteria comprises Denitrifying Phosphate Accumulating Organisms and common heterotrophic denitrifying Bacteria.
Below with Certain University in Beijing dependents' district sanitary sewage for handling object, investigated the denitrogenation dephosphorizing performance of this system.Duration of test, influent quality feature is as shown in table 1:
Table 1. duration of test influent quality feature
Waste water processes is as follows: first sanitary sewage enters A from raw water box
2/ O-SBR denitrification dephosphorizing reactor, absorbs outer carbon source synthesis PHA in anaerobism section, carries out anaerobic phosphorus release simultaneously; The nitrification liquid from N-SBR is injected by nitrification liquid reflux pump at the beginning of anoxic section, carry out anoxic denitrification except phosphorus reaction, absorption and stripping nitrogen that of short duration aeration completes phosphoric residue is carried out after reacting completely, reaction terminates rear quiescent setting, water outlet pumps into N-SBR short distance nitration reactor through the second intake pump and carries out aerobic aeration, by controlling aeration rate and aeration time, by the NH of 50%
4 +-N is oxidized to NO
2 -in-N the stage, realize half short distance nitration, short distance nitration terminates rear quiescent setting, and water outlet (being rich in ammonia nitrogen and nitrite nitrogen) enters intermediate water tank, then by peristaltic pump by the water outlet of a part of N-SBR short distance nitration reactor at A
2/ O-SBR reactor anoxic is back to A from intermediate water tank at the beginning
2/ O-SBR denitrification dephosphorizing reactor, remainder is drawn into anaerobic ammonia oxidation reactor by peristaltic pump, carries out autotrophic denitrification and removes total nitrogen further, and reaction terminates rear quiescent setting, system water outlet is finally discharged from anaerobic ammonia oxidation reactor outlet valve, and its water displacement equals system and intakes at first.
Carrying out practically parameter is as follows:
A
2/ O-SBR reactor: be made up of synthetic glass, useful volume is 10L; Inoculation denitrification dephosphorization mud starts reactor, and seed sludge concentration is at about 3000mg/L; Enter 4L sanitary sewage at the beginning of each cycle anaerobism, anoxic just refluxes 2L nitrification liquid, and draining is than 0.6; Water inlet 10min, anaerobic phosphorus release 1.5h, anoxic inhale phosphorus 3h, aerobic suction phosphorus 0.5h, sedimentation and drawing 0.5h; Run duration spoil disposal every day 500ml, control sludge age is 10 ~ 15d, and sludge concentration remains on 3000 ~ 3500mg/L.
N-SBR short distance nitration reactor: be made up of synthetic glass, useful volume is 10L; Inoculation short distance nitration mud starts reactor, and seed sludge concentration is at about 2800mg/L; Before each cycle aeration, 10min passes through the first intake pump by 6L supernatant liquor from A
2/ O-SBR reactor pumps in reactor, then aeration 2h, sedimentation and drawing 1h, and draining is than 0.6, and water outlet enters intermediate water tank, and aerating system regulates aeration rate by gas meter, and control DO is at 1 ~ 2mg/L.
Anaerobic ammonia oxidation reactor: be made up of synthetic glass, useful volume is 10L; Inoculation anaerobic ammonium oxidation granular sludge starts reactor, and seed sludge concentration is at about 3500mg/L; 10min before each cycle anaerobism stirs, by the 3rd intake pump, the water outlet of 4LN-SBR short distance nitration reactor is pumped into reactor from intermediate water tank, then anaerobism stirs 4h, sedimentation and drawing 1h, and water displacement equals the flooding quantity (4L) of each periodic reaction device of this reactor.
Test run condition: only control dissolved oxygen in process of the test, does not have temperature control (water temperature is between 18 ~ 26 DEG C), not control pH (pH of former water is between 7.2 ~ 7.8) yet
Test-results shows: the average COD of water outlet, NH
4 +-N, NO
3 --N, NO
2 --N, TN, TP concentration are respectively 40.35mg/L, 6.34mg/L, 0.89mg/L, 2.19mg/L, 11.28mg/L, 0.3mg/L, and each index of above-mentioned water outlet all reaches one-level A standard.
This technique not only achieves the maximization of former water utilization of carbon source rate, and achieves minimizing of sewage disposal carbon source usage quantity, fundamentally solves the problem that the not enough Nitrogen/Phosphorus Removal caused of carbon source is not good.Be separated by adopting biophase, achieve the coupling of denitrification dephosphorization, Anammox and short distance nitration three kinds of functional microorganisms, denitrifying phosphorus removing bacteria effectively removes the organism in wastewater and sewage, eliminate the impact of organism on short distance nitration bacterium and anaerobic ammonia oxidizing bacteria, thus ensure that short distance nitration and Anammox reaction carry out smoothly, the basicity that denitrification dephosphorization and Anammox reaction produce simultaneously can balance the basicity that short distance nitration reaction consumes, and is conducive to the steady running of system.
Above content is the further description done the present invention in conjunction with concrete experiment embodiment; be convenient to these those skilled in the art understand and apply the invention better; can not think that specific embodiment of the invention is only limited to these and illustrates, therefore the simple modifications done the present invention of these those skilled in the art is all within scope.
Claims (2)
- The testing apparatus of 1.SBR short-cut denitrification dephosphorization coupling Anammox, is characterized in that: this system is primarily of raw water box (1), A 2/ O-SBR denitrification dephosphorizing reactor (2), N-SBR short distance nitration reactor (3), intermediate water tank (4), anaerobic ammonia oxidation reactor (5) connect to form successively; Raw water box (1) is by the first intake pump (6) and water intaking valve (21) and A 2/ O-SBR reactor (2) connects; A 2the outlet valve (22) of/O-SBR reactor is connected with the water intaking valve (23) of N-SBR reactor by the second intake pump (8); The water outlet of N-SBR reactor is connected with intermediate water tank (4) with magnetic valve (10) through outlet valve (24); Intermediate water tank (4) by the 3rd intake pump (11) and reflux pump (20) respectively with anaerobic ammonia oxidation reactor (5) and A 2/ O-SBR reactor (2) connects; The water outlet of system is discharged finally by anaerobic ammonia oxidation reactor outlet valve (26) and magnetic valve (13);The testing apparatus of SBR short-cut denitrification dephosphorization coupling Anammox, is characterized in that: A 2/ O-SBR denitrification dephosphorizing reactor (2) is provided with the first stirring rake (7), the first aeration head (16), the first gas meter (15) and the first upflow tube (27); N-SBR short distance nitration reactor (3) is provided with the second stirring rake (9), the second aeration head (19), the second gas meter (18) and the second upflow tube (28); Anaerobic ammonia oxidation reactor is provided with the 3rd stirring rake (12) and the 3rd upflow tube (29); First gas meter (15) connects the first air pump (14) and the first aeration head (16), and the second gas meter (18) connects the second air pump (17) and the second aeration head (19).
- The test method of 2.SBR short-cut denitrification dephosphorization coupling Anammox, is characterized in that, comprise following content:System starts: inoculation denitrification dephosphorization mud in denitrification nitrogen and phosphorus removal sbr reactor device (2), makes sludge concentration in reactor reach 3000 ~ 3500mg/L; In short distance nitration sbr reactor device (3), inoculation short distance nitration floc sludge, makes sludge concentration in reactor reach 3000 ~ 3500mg/L; In Anammox sbr reactor device, inoculate anaerobic ammonium oxidation granular sludge, make sludge concentration reach 3000 ~ 4000mg/L; First sanitary sewage enters A 2o-SBR carries out organic degraded, denitrification nitrogen and phosphorus removal, which removes organism and phosphorus, be rich in the water inlet of water outlet as short distance nitration sbr reactor device of ammonia nitrogen, carry out part short distance nitration, then enter in anaerobic ammonia oxidation reactor and complete autotrophic denitrification, after question response terminates, sedimentation and drawing, when system nitrogen removal rate reaches more than 85%, tp removal rate reaches more than 95%, namely thinks that the coupling integrated Anaerobic ammonium oxidation system of SBR denitrification dephosphorization starts successfully;Periodic duty operation steps is as follows:1) sanitary sewage pumps into A by former water tank (1) through intake pump (6) 2/ O-SBR denitrification dephosphorizing reactor (2), water-filling is than 0.3 ~ 0.4; After water inlet end, start stirring rake (7), anaerobism stirs 1.5 ~ 2h, the voltaile fatty acid (VFAs) that Denitrifying Phosphate Accumulating Organisms (DPAOs) makes full use of in former water synthesizes internal carbon source PHA, discharge phosphorus simultaneously, according to the flex point on pH and ORP curve, control the anaerobic phosphorus release time, A 2/ O-SBR denitrification dephosphorizing reactor (2) run time, every day spoil disposal, make sludge age be 10 ~ 15d, sludge concentration maintains 3000 ~ 3500mg/L;2), after the reaction of anaerobism section terminates, by peristaltic pump (20), the water outlet of N-SBR short-cut denitrification reactor (3) is back to A from intermediate water tank (4) 2in/O-SBR denitrification dephosphorizing reactor (2), for denitrification dephosphorization provides prerequisite; In the process, Denitrifying Phosphate Accumulating Organisms is with the NO refluxed in nitrification liquid 2 --N is electron acceptor(EA), and with the internal carbon source PHA of anaerobism section storage for electron donor, anoxic denitrification occurs except phosphorus reaction, reflux ratio is 50% ~ 100%, and the reaction times is 3 ~ 4h;3) after the reaction of anoxic section terminates, open air pump (14) and aeration is carried out to N-SBR reactor (3), complete the absorption of phosphoric residue and the nitrogen of stripping anoxic section denitrification generation, reaction times is 0.5 ~ 1h, by gas meter (15) adjusting gas flow, control DO=2 ~ 3mg/L;4), after aeration terminates, close air pump (14), quiescent setting draining, draining ratio is 0.6, is rich in NH 4 +the supernatant liquor of-N pumps in N-SBR short distance nitration reactor (3) by intake pump (8), then open air pump (17) and aeration is carried out to N-SBR short distance nitration reactor (3), aeration time is 1.5-2h, aeration rate is regulated by gas meter (18), control DO=1 ~ 2mg/L, when N-SBR short distance nitration reactor (3) runs, carry out spoil disposal, control sludge age at 15 ~ 20d, sludge concentration is at 2500 ~ 3000mg/L;5) after aeration agitation terminates, quiescent setting draining, draining is than 0.6, the water outlet of N-SBR short distance nitration reactor (3) enters intermediate water tank (4) through outlet valve (24) and magnetic valve (10), then by reflux pump (20) and the 3rd intake pump (11), the water outlet of short distance nitration reactor is pumped into A respectively from intermediate water tank (4) 2in/O-SBR denitrification dephosphorizing reactor and anaerobic ammonia oxidation reactor, volume ratio is 1:2;6) after nitrification liquid enters anaerobic ammonia oxidation reactor (5), anaerobism stirs 3 ~ 4h, then sedimentation and drawing, and control sludge concentration at 3000 ~ 3500mg/L, draining is than 0.3 ~ 0.4, and then system enters next cycle, repeats above step.
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| CN106006967A (en) * | 2016-07-10 | 2016-10-12 | 北京工业大学 | Method for deeply treating sludge anaerobic digestion solution and urban sewage with partial-nitrification, ANAMMOX and short-cut-denitrification technology |
| CN106673192A (en) * | 2016-11-17 | 2017-05-17 | 上海晶宇环境工程股份有限公司 | Technology for removing total nitrogen in garbage leachate by anammox and special device thereof |
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| CN111908600A (en) * | 2020-07-02 | 2020-11-10 | 同济大学 | Rapid starting and stable operation method for short-range denitration and nitrite nitrogen production process of municipal sewage |
| CN111908727A (en) * | 2020-08-20 | 2020-11-10 | 江苏苏美达成套设备工程有限公司 | Advanced sewage treatment process for denitrification anaerobic ammonia oxidation of reflux part |
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| CN114671512A (en) * | 2022-03-29 | 2022-06-28 | 北京工业大学 | Method and device for synchronously removing carbon, nitrogen and phosphorus by utilizing sludge fermentation reinforced mainstream anaerobic ammonia oxidation based on A-B method |
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