CN205442793U - Biological simultaneous nitrogen and phosphorus removal device of municipal sewage A2O - - Google Patents
Biological simultaneous nitrogen and phosphorus removal device of municipal sewage A2O - Download PDFInfo
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- CN205442793U CN205442793U CN201521143768.0U CN201521143768U CN205442793U CN 205442793 U CN205442793 U CN 205442793U CN 201521143768 U CN201521143768 U CN 201521143768U CN 205442793 U CN205442793 U CN 205442793U
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Abstract
The utility model discloses a biological simultaneous nitrogen and phosphorus removal device of municipal sewage A2O -, including oxygen deficiency pond, anaerobism pond, oxygen deficiency pond, good oxygen pond and sedimentation tank in advance, municipal sewage carries respectively to oxygen deficiency pond, anaerobism pond in advance through water inlet, sewage lifting pump house, aeration grit chamber, water pump, the inlet tube of taking thick grid and thin grid, be equipped with the dive agitator in advance in oxygen deficiency pond, anaerobism pond and the oxygen deficiency pond, good oxygen bottom of the pool portion establishes the aerator, and good oxygen pond is connected with the anaerobism pond through nitrifying mixed return line, and the oxygen deficiency pond is passed through the oxygen deficiency and is mixed return line and is connected with the anaerobism pond, bottom the sedimentation tank mud some deliver to a between sludge concentration dehydration, another part is passed through the return sludge pipeline and is connected with oxygen deficiency pond in advance. The utility model discloses reducing or eliminating nitrate and release the influence of phosphorus process to the anaerobism, the carbon source demand of phosphorus is released to balanced oxygen deficiency denitrification and anaerobism, has played the efficient to nitrogen and phosphorus and has got rid of the effect.
Description
Technical field
This utility model relates to wastewater processing technology, particularly relates to a kind of municipal sewage improvement A2/ O-biology synchronous denitrification dephosphorizing device.
Background technology
During existing sewage and biological wastewater treatment, the removing of nitrogen phosphorus is more more complex than the removal of carbon element, the nitrification of nitrogen to be related to, denitrification, the releasing phosphorus and inhale the process such as phosphorus of microorganism, the purpose of each process above-mentioned is different, forming microorganism, the requirement of matrix type and environmental condition is the most different.How in a water treatment facilities, various appropriate reaction conditions organically to be combined, be a significant problem.
Since Wuhrmann in 1932 utilizes the endogenous nitrogen established rear-mounted denitrification technique removal municipal sewage of microorganism, improvement and development through over half a century, proposed by Deakyne, Patel and Krichten in 1984 and on current engineering of water treatment, apply the most universal, the most succinct A of technique1(Anaerobic)A2(anoxic) O (Oxygen) denitrification dephosphorization technique, is called for short A1A2O technique or title A2/ O technique.
A2/O technique is made up of anaerobic zone, anoxic zone, aerobic zone, settling zone and two return-flow systems, its function is anaerobic phosphorus release, anoxic denitrification denitrogenation, aerobic nitrification inhales phosphorus, after precipitation, mud-water separation, discharging dephosphorization with excess sludge, conventional A2/O technique has the disadvantage in that 1. rank forefront due to anaerobic zone, anaerobic zone is had a negative impact by the nitrate in returned sludge, affects the phosphor-removing effect of system；2. being positioned in the middle part of system due to anoxic zone, denitrification occupy minus advantage on carbon source is distributed, thus have impact on the denitrification effect of system；3. due to circulation in existing, in the excess sludge that common process system is discharged, an actual only small part experienced by and complete puts phosphorus, inhales phosphorus process, remaining is the most substantially directly entered aerobic zone by anoxic zone without anaerobic state, and this is disadvantageous for system dephosphorization.4. in system, biological phosphate-eliminating needs high sludge loading, and biological denitrificaion then needs low sludge loading, makes the two reach optimum state more difficult in A/A/O technique simultaneously, and typically based on biological denitrificaion, biological phosphate-eliminating is auxiliary.
In order to solve nitrate in A/A/O method returned sludge, anaerobism is put the impact of phosphorus etc., it is optimized the aspect such as sequence, branch water inlet improves at water intake mode, anaerobism, anoxia, aerobic section, create improvement A/A/O technique, inversion A/A/O technique, UCT technique, MUCT technique etc..
Utility model content
The purpose of this utility model is on the premise of not increasing reactor volume, reinforcement denitrifying bacteria is in the action time of anaerobic pond, with remove in returned sludge rich in nitrate, thus reduce or eliminate the nitrate impact on anaerobic phosphorus release process, and ensure a kind of municipal sewage improvement A2/O technique denitrification dephosphorization apparatus of phosphor-removing effect by strengthening denitrification dephosphorization effect.
This utility model adds a pre-anoxic pond on the basis of tradition AAO technique, adds anoxia mixed-liquor return and nitrification liquid mixed-liquor return simultaneously.Water inlet is shunted by this utility model, respectively enter pre-anoxic pond and anaerobic pond, the returned sludge of the urban sewage mixing after desanding enters pre-anoxic pond, the carbon source utilizing municipal sewage to provide carries out denitrification to the nitrate nitrogen in returned sludge, and remaining municipal sewage and pre-anoxic pond water outlet mix in anaerobic pond, polyP bacteria absorbs VFA degradable in water, it is stored in internal with the form of PHB, Quadrafos is discharged in water with the form of orthophosphate simultaneously, in addition, also add biological deodorizing tower, to have material frowzy by the physiological metabolism of microorganism to be converted, to reach the purpose of deodorization.To a certain extent, eliminate municipal drainage pollution problem, alleviate the situation that city water resource is nervous, improve the removal effect to Organic substance, nitrogen and phosphorus, advantageously reduce energy consumption, reduce operating cost.
This utility model is achieved through the following technical solutions:
A kind of municipal sewage A2/ O-biology synchronous denitrification dephosphorizing device, including the pre-anoxic pond, anaerobic pond, anoxic pond, Aerobic Pond and the sedimentation tank that are sequentially connected with, municipal sewage is delivered to pre-anoxic pond, anaerobic pond respectively through the sewage lifting pump house of water inlet, band coarse rack and fine fack, aerated grit chamber, water pump, water inlet pipe successively；Being respectively equipped with submersible agitator in described pre-anoxic pond, anaerobic pond and anoxic pond, be provided with aerator bottom described Aerobic Pond, described aerator is connected with air compressor；And use electromagnetic flowmeter to control aeration rate, described Aerobic Pond is connected with anaerobic pond by nitrification mixing reflux pipe, anoxic pond is connected with anaerobic pond by anoxia mixing reflux pipe, a described sedimentation tank base sludge part is delivered between sludge concentration and dewatering, another part is connected with pre-anoxic pond by returned sludge pipeline, capacity of returns is controlled by gate, by water inlet is shunted, respectively enter pre-anoxic pond and anaerobic pond, with remove in returned sludge rich in nitrate, thus reduce or eliminate the nitrate impact on anaerobic phosphorus release, by strengthening denitrification dephosphorization effect and then ensureing phosphor-removing effect.
Further, described aerator is platy fine bubble aerator.
Further, described pre-anoxic pond, anaerobic pond, anoxic pond, Aerobic Pond are arranged in same housing, are separated by dividing plate, and the dividing plate between the most pre-anoxic pond and anaerobic pond, between anaerobic pond and anoxic pond may move, easy to process, it is simple to assemble and adjust.
Further, between sewage lifting pump house, aerated grit chamber, Aerobic Pond and the sludge concentration and dewatering of described band coarse rack and fine fack, it is provided with biological deodorizing tower, will have material frowzy by the physiological metabolism of microorganism and be converted, to reach the purpose of deodorization.
Compared with the prior art, this utility model has the advantages that
(1) this utility model is at improvement A2/ O technique is on the basis of existing, by increasing a pre-anoxic pond, adds anoxia mixing reflux pipe and nitrification mixing reflux pipe simultaneously.Water inlet is shunted, respectively enters pre-anoxic pond and anaerobic pond, with remove in returned sludge rich in nitrate, thus reduce or eliminate the nitrate impact on anaerobic phosphorus release process, and then ensure that the effect of high-efficient denitrification and dephosphorization.
(2) problem that this utility model eliminates municipal water blowdown, alleviate the situation that city water resource is nervous, the solution providing economic, convenient, reasonable, feasible is disposed in integrated treatment for municipal sewage, because being not required to take more soil, the most do not increase capital expenditure, not only there is huge social benefit, bring considerable economic benefit and environmental benefit simultaneously, and promote sewage disposal resource to develop.
(3) this utility model improvement A2The process technique of/O technique denitrogenation dephosphorizing is as follows to the removal effect of pollutant: good to the removal effect of COD and phosphorus, and water outlet COD is at below 40mg/L, and phosphorus water outlet is at below 0.5mg/L；Water outlet ammonia nitrogen is at below 5mg/L.Every effluent quality index all reaches and is better than discharging standards one-level A standard.
(4) between sewage lifting pump house, aerated grit chamber, Aerobic Pond and the sludge concentration and dewatering of band coarse rack and fine fack, these regions both increase biological deodorizing tower, to have material frowzy by the physiological metabolism of microorganism to be converted, to reach the purpose of deodorization.
Accompanying drawing explanation
Fig. 1 is the municipal sewage improvement A of embodiment one2/ O technique denitrification dephosphorization apparatus structural representation.
Fig. 2 is the embodiment two removal effect figure to COD.
Fig. 3 is the embodiment two removal effect figure to ammonia nitrogen.
Fig. 4 is the embodiment two removal effect figure to total nitrogen.
Fig. 5 is the embodiment two removal effect figure to total phosphorus.
Shown in figure it is: 1. water inlet；2. the sewage lifting pump house of band coarse rack and fine fack；3. aerated grit chamber；4. the first biological deodorizing tower；5. water pump；6. water inlet pipe；The most pre-anoxic pond；8. anaerobic pond；9. anoxic pond；10. Aerobic Pond；11. second biological deodorizing towers；12. air compressors；13. submersible agitators；14. water outlets；15. sedimentation tanks；16. anoxia mixing reflux pipes；17. nitrification mixing reflux pipes；18. returned sludge pipelines；Between 19. sludge concentration and dewaterings；20. the 3rd biological deodorizing towers.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail, but this utility model scope required for protection is not limited to the scope described in detailed description of the invention.
Embodiment one
As it is shown in figure 1, a kind of municipal sewage A2/ O-biology synchronous denitrification dephosphorizing device, including the pre-anoxic pond 7 being sequentially connected with, anaerobic pond 8, anoxic pond 9, Aerobic Pond 10 and sedimentation tank 15, municipal sewage is delivered to pre-anoxic pond 7, anaerobic pond 8 respectively through the sewage lifting pump house 2 of water inlet 1, band coarse rack and fine fack, aerated grit chamber 3, water pump 5, water inlet pipe 6 successively；Being respectively equipped with submersible agitator 13 in described pre-anoxic pond 7, anaerobic pond 8 and anoxic pond 9, be provided with platy fine bubble aerator bottom described Aerobic Pond 10, described platy fine bubble aerator is connected with air compressor 12；And use electromagnetic flowmeter to control aeration rate, described Aerobic Pond 10 is connected with anaerobic pond 8 by nitrification mixing reflux pipe 17, anoxic pond 9 is connected with anaerobic pond 8 by anoxia mixing reflux pipe 16, described sedimentation tank 15 uses the square radical sedimentation basin of peripheral effluent, its base sludge part delivers between sludge concentration and dewatering 19, another part is connected with pre-anoxic pond 7 by returned sludge pipeline 18, capacity of returns is controlled by gate, by water inlet is shunted, respectively enter pre-anoxic pond and anaerobic pond, with remove in returned sludge rich in nitrate, thus reduce or eliminate the nitrate impact on anaerobic phosphorus release, by strengthening denitrification dephosphorization effect and then ensureing phosphor-removing effect.
Specifically, described pre-anoxic pond 7, anaerobic pond 8, anoxic pond 9, Aerobic Pond 10 are arranged in same housing, and each pond cumulative volume is 50m3, being separated by steel plate, the dividing plate between the most pre-anoxic pond 7 and anaerobic pond 8, between anaerobic pond 8 and anoxic pond 9 may move, easy to process, it is simple to assemble and adjust.
Additionally, between described band coarse rack and the sewage lifting pump house 2 of fine fack, aerated grit chamber 3, Aerobic Pond 10 and sludge concentration and dewatering, 19 are provided with biological deodorizing tower, to have material frowzy by the physiological metabolism of microorganism to be converted, to reach the purpose of deodorization.
The present embodiment includes pre-anoxic pond 7, anaerobic pond 8, anoxic pond 9, Aerobic Pond 10, the most pre-anoxic pond 7 is at head end, anoxic pond 9 is after anaerobic pond 8, process according to water in Aerobic Pond 10 and require to throw in floating stuffing, pre-anoxic pond 7 is connected by returned sludge pipeline 18 with sedimentation tank 15, and anoxic pond 9 is connected by anoxia mixing reflux pipe 16 with anaerobic pond 8.
This device added a pre-anoxic pond 7 before anoxic pond 9 and anaerobic pond 8, with from sedimentation tank 15 sludge reflux and water inlet liquid mix, with remove in returned sludge rich in nitrate, thus reduce or elimination the nitrate impact on anaerobic phosphorus release process；In anoxic pond 9, denitrifying bacterium utilizes the carbonaceous organic material in municipal sewage, as carbon source, the nitrate in returned sludge is carried out denitrification；Nitrification liquid in Aerobic Pond 10 is back to anaerobic pond 8, and nitrate therein carries out denitrification, and can reduce the content of nitrate in returned sludge, alleviates polyP bacteria and the competitive relation of denitrifying bacterium；Owing to adding a pre-anoxic pond 7, both improve nitric efficiency, and reduced the nitrate interference to anaerobic pond 8 the most to a great extent, thus improve dephosphorization efficiency.In addition, also between sewage lifting pump house 2, aerated grit chamber 3, Aerobic Pond 10 and the sludge concentration and dewatering of band coarse rack and fine fack, 19 these regions are respectively provided with the biological deodorizing tower 20 of first biological deodorizing tower the 4, second biological deodorizing tower the 11, the 3rd, to have material frowzy by the physiological metabolism of microorganism to be converted, to reach the purpose of deodorization.On the premise of this device does not increases volume, strengthen denitrifying bacteria in the action time of anaerobic pond 8, with remove in returned sludge rich in nitrate, thus reduce or eliminate the nitrate impact on anaerobic phosphorus release process, ensure phosphor-removing effect by denitrification dephosphorization.
Embodiment two
A kind of municipal sewage A based on described device2/ O-biology synchronous denitrification and dephosphorization method, including step:
1) municipal sewage after desanding is respectively fed to pre-anoxic pond 7 and anaerobic pond 8 by water pump 5；
2) carbon source utilizing municipal sewage to provide in pre-anoxic pond 7 carries out denitrification to the nitrate nitrogen in returned sludge, with remove in returned sludge rich in nitrate, thus reduce or eliminate the nitrate impact on anaerobic phosphorus release process, remaining urban sewage and pre-anoxic pond 7 water outlet mix in anaerobic pond 8, polyP bacteria absorbs VFA degradable in water inlet, it is stored in internal with the form of PHB, Quadrafos is discharged in water with the form of orthophosphate simultaneously；
3) denitrification denitrogenation process is carried out through denitrification with releasing the mixed liquor inflow anoxic pond 9 after phosphorus processes, the mixed-liquor return that a part in anoxic pond 9 is processed through denitrification denitrogenation by mixed-liquor return system 16 simultaneously, in anaerobic pond 8, plays the effect of gathering denitrifying polyP bacteria；
4) the mixed liquor entrance Aerobic Pond 10 processed through denitrification denitrogenation in anoxic pond 9 carries out nitrification suction phosphorus process, and while heterotrophic bacteria degradation of organic substances, the mineralized nitrogen in sewage is nitrate nitrogen by nitrifier, the orthophosphate in polyP bacteria then excessive consumption sewage；
5) the mixed liquor part inhaling phosphorus process through nitrification is back to anaerobic pond 8 through nitrification mixing reflux pipe 17, and another part realizes the removal of phosphorus in sedimentation tank 15 with the form of discharge excess sludge；
6) a described mud part is back to pre-anoxic pond 7 through returned sludge pipeline 18, and another part is transported after thickening between sludge concentration and dewatering.
Further, the mixed liquid recycle ratio R of nitrification mixing reflux pipe 17 is 80-150%, and the anoxia return current ratio of the mixed liquid R1 of anoxia mixing reflux pipe 16 is 100-200%, and the return sludge ratio r of returned sludge pipeline 18 is 60% ~ 150%.
Further, described pre-anoxic pond 7, anaerobic pond 8, anoxic pond 9, the total hrt HRT of Aerobic Pond 10 are 8-10h.
Water inlet is shunted by the present embodiment, respectively enter pre-anoxic pond 7 and anaerobic pond 8, the returned sludge of the urban sewage mixing after desanding enters pre-anoxic pond 7, the carbon source utilizing municipal sewage to provide carries out denitrification to the nitrate nitrogen in returned sludge, and remaining municipal sewage and pre-anoxic pond water outlet mix in anaerobic pond, polyP bacteria absorbs VFA degradable in water, it is stored in internal with the form of PHB, Quadrafos is discharged in water with the form of orthophosphate simultaneously, then municipal sewage enters sedimentation tank 15, after mud-water separation, a part of sludge reflux is to pre-anoxic pond 7, excess sludge is discharged；Water outlet 14 is discharged from sedimentation tank 15.Pre-anoxic pond 7 is connected by returned sludge pipeline 18 with sedimentation tank 15, it is ensured that the good operation of nitration reaction；Anoxic pond 9 is connected by mixed-liquor return system 16 with anaerobic pond 8, can play the effect of gathering denitrifying polyP bacteria.
The average influent ammonium concentration of municipal sewage is 18.67mg/L, and average water inlet total nitrogen concentration is at 29.79mg/L, and average water inlet total phosphorus concentration is 1.76mg/L, and average inlet COD concentration is 150.09mg/L.Investigate each factor respectively, improve A2The effect of the process technique of/O technique denitrogenation dephosphorizing.Experiment of single factor result is as follows:
(1) when hydraulic detention time HRT is 8h, ammonia nitrogen average removal rate is 93.84%；Total nitrogen average removal rate is 74.65%；Total phosphorus average removal rate is 88.38%；COD average removal rate is 80.74%.
(2) being 150% as anoxia return current ratio of the mixed liquid R1, ammonia nitrogen average removal rate is 93.66%；Total nitrogen average removal rate is 68.85%；Total phosphorus average removal rate is 87.60%；COD average removal rate is 80.38%.
(3) being 80% as return sludge ratio r, ammonia nitrogen average removal rate is 86.45%；Total nitrogen average removal rate is 74.65%；Total phosphorus average removal rate is 79.93%；COD average removal rate is 76.60%.
Implementation result
Improvement A is investigated according to above experiment of single factor2The result of implementation of the process technique of/O technique denitrogenation dephosphorizing, mixed liquid recycle ratio R is 80-150%, and anoxia return current ratio of the mixed liquid R1 is 100-200%, hydraulic detention time HRT is 8h, return sludge ratio r is 80-150%, by these several condition integrated applications, has investigated improvement A2The implementation result of the process technique of/O technique denitrogenation dephosphorizing.
1, the removal effect of COD
A is can be seen that by accompanying drawing 22The process technique of/O biomembrane synchronous denitrification dephosphorizing has good removal effect to COD.The combined sewage COD concentration change entering pilot-plant is relatively big, and inlet COD concentration ratio is relatively low generally.Effluent COD concentration also ratio is relatively low, illustrates that organic pollution has been fully utilized.Average influent COD is at about 150.09mg/L, and water outlet COD is typically at below 40mg/L.COD clearance reaches as high as 96%, and average removal rate is up to 85%.COD is the carbon source of growth of microorganism in sewage treatment process, and when carrying out the denitrification dephosphorization function of sewage, denitrification denitrogenation Pseudomonas is in heterotroph facultative anaerobe, when oxygen free condition, with organic carbon as electron donor with nutrient source carries out anti-nitration reaction.And the polyP bacteria realizing dephosphorization function needs active absorption to be converted, by anaerobic fermentation and acid production bacterium, the acetic acid glycosides that Organic substance in water becomes, this also can consume carbon source.The growth of microorganism simultaneously is also required to consume the Organic substance in sewage and changes into the ingredient of own cells.
2, ammonia nitrogen and the removal effect of total nitrogen
Be can be seen that by accompanying drawing 3 and accompanying drawing 4, the combined sewage total nitrogen concentration ratio generally entering pilot-plant is relatively low, but owing to sewage is high nitrogenous and moment is mixed into and causes fluctuation ratio bigger, wherein, intake minimum TN concentration at more than 5mg/L, intake the highest TN concentration at 62.98mg/L, average water inlet TN is at 29.79mg/L, denitrification denitrogenation effect through microorganism, water outlet total nitrogen is typically at below 2mg/L, minimum effluent substrate concentration is 1.8mg/L, water outlet maximum concentration is 13.53mg/L, average out to 8.51mg/L, within discharge standard scope, there is the nitrification effect of efficient stable mainly due to system, ensure that the denitrification effect of system.
3, the removal effect of total phosphorus
Be can be seen that by accompanying drawing 5, it can be seen that improvement A2The process technique of/O technique denitrogenation dephosphorizing has good removal effect to total phosphorus.The fluctuation ratio entering total phosphorus concentration is bigger.Wherein water inlet T-P least concentration 0.32mg/L, maximum concentration is at 5.39mg/L, and mean concentration is 1.76mg/L, and through the dephosphorization function of microorganism, water outlet T-P is typically at below 0.5mg/L, average out to 0.17mg/L.The highest clearance of T-P is up to 98%, and average removal rate is up to 89%.
Summary is tested, this utility model improvement A2The process technique of/O technique synchronous denitrification dephosphorizing is good to the removal effect of pollutant: COD, NH4 +-N, the water concentration that averages out of TN, TP are respectively 20.13mg/L, 0.35mg/L, 8.51mg/L, 0.17mg/L, average removal rate is respectively 86%, 98%, 70%, 89%, is fully achieved country " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A standard.
Above-described embodiment of the present utility model is only for clearly demonstrating this utility model example, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.All any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in this utility model scope of the claims.
Claims (4)
1. a municipal sewage A2/ O-biology synchronous denitrification dephosphorizing device, it is characterized in that: include pre-anoxic pond (7), anaerobic pond (8), anoxic pond (9), Aerobic Pond (10) and the sedimentation tank (15) being sequentially connected with, municipal sewage is delivered to pre-anoxic pond (7), anaerobic pond (8) respectively through the sewage lifting pump house (2) of water inlet (1), band coarse rack and fine fack, aerated grit chamber (3), water pump (5), water inlet pipe (6) successively；It is respectively equipped with submersible agitator (13) in described pre-anoxic pond (7), anaerobic pond (8) and anoxic pond (9), described Aerobic Pond (10) bottom is provided with aerator, and described aerator is connected with air compressor (12)；And use electromagnetic flowmeter to control aeration rate, described Aerobic Pond (10) is connected with anaerobic pond (8) by nitrification mixing reflux pipe (17), anoxic pond (9) is connected with anaerobic pond (8) by anoxia mixing reflux pipe (16), described sedimentation tank (15) base sludge part delivers to (19) between sludge concentration and dewatering, another part is connected with pre-anoxic pond (7) by returned sludge pipeline (18), gate control capacity of returns.
Municipal sewage A the most according to claim 12/ O-biology synchronous denitrification dephosphorizing device, it is characterised in that: described aerator is platy fine bubble aerator.
Municipal sewage A the most according to claim 12/ O-biology synchronous denitrification dephosphorizing device, it is characterized in that: described pre-anoxic pond (7), anaerobic pond (8), anoxic pond (9), Aerobic Pond (10) are arranged in same housing, being separated by dividing plate, the dividing plate between the most pre-anoxic pond (7) and anaerobic pond (8), between anaerobic pond (8) and anoxic pond (9) may move.
Municipal sewage A the most according to claim 12/ O-biology synchronous denitrification dephosphorizing device, it is characterised in that: between the sewage lifting pump house (2) of described band coarse rack and fine fack, aerated grit chamber (3), Aerobic Pond (10) and sludge concentration and dewatering, (19) are provided with biological deodorizing tower.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461061A (en) * | 2015-12-31 | 2016-04-06 | 华南理工大学 | A<2>/O-biology synchronous nitrogen and phosphorus removal device and method for urban sewage |
| CN107244738A (en) * | 2017-07-21 | 2017-10-13 | 湖北君集水处理有限公司 | Sewage denitrification dephosphorization system and the method that biochemical unit switches are carried out according to season |
| CN107585974A (en) * | 2017-11-01 | 2018-01-16 | 济宁市孚源环保科技有限公司 | A kind of sewage water treatment method based on MBBR techniques |
-
2015
- 2015-12-31 CN CN201521143768.0U patent/CN205442793U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461061A (en) * | 2015-12-31 | 2016-04-06 | 华南理工大学 | A<2>/O-biology synchronous nitrogen and phosphorus removal device and method for urban sewage |
| CN107244738A (en) * | 2017-07-21 | 2017-10-13 | 湖北君集水处理有限公司 | Sewage denitrification dephosphorization system and the method that biochemical unit switches are carried out according to season |
| CN107244738B (en) * | 2017-07-21 | 2023-04-25 | 湖北君集水处理有限公司 | Sewage denitrification and dephosphorization system and method for switching biochemical units according to seasons |
| CN107585974A (en) * | 2017-11-01 | 2018-01-16 | 济宁市孚源环保科技有限公司 | A kind of sewage water treatment method based on MBBR techniques |
| CN107585974B (en) * | 2017-11-01 | 2020-10-02 | 济宁市孚源环保科技有限公司 | Sewage treatment method based on MBBR (moving bed biofilm reactor) process |
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