CN104828941A - A2O-BAF combined process and A2O-BAF combined device - Google Patents
A2O-BAF combined process and A2O-BAF combined device Download PDFInfo
- Publication number
- CN104828941A CN104828941A CN201410654568.5A CN201410654568A CN104828941A CN 104828941 A CN104828941 A CN 104828941A CN 201410654568 A CN201410654568 A CN 201410654568A CN 104828941 A CN104828941 A CN 104828941A
- Authority
- CN
- China
- Prior art keywords
- baf
- pond
- aerobic
- water
- short
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses an A2O-BAF combined process and an A2O-BAF combined device, wherein the A2O-BAF combined process includes following operation steps: (1) anaerobic phosphorus releasing; (2) anoxic denitrification phosphorus removal; (3) aerobic phosphorus absorption; (4) precipitation; (5) BAF aerobic nitrification; and (6) BAF back flushing. According to the invention, the device organically combines an active sludge system and a bio-membrane system and employs an anaerobic/anoxic/short-time aerobic-biological aerated filter (A2O-BAF) combination process, so that the device is excellent in ammonia nitrogen removal effect with the individual biological aerated filter (BAF) for completing the nitrification. By means of discharged water from the BAF as a nitrification liquid for being back-flown to an anoxic tank with increasing of the volume of an anaerobic tank, the denitrification phosphorus removal effect is enhanced and further the removal effects of total nitrogen and total phosphorus are improved. By means of a short-time aerobic tank for completing the short-time phosphorus absorption, an influence on biological phosphorus removal effect is avoided due to the limited nitrification effect. Compared with a conventional process, the process is significantly reduced in HRT, can achieve synchronous removal of various pollutant, and is good in discharged water quality, is less in occupied area, is low in operation cost and is low in sludge production rate.
Description
Technical field
The invention belongs to environmental technology field, relate to a kind of biologic process for treating sewage technology, be specifically related to a kind of A
2o-BAF combination process and device.
Background technology
Along with the fast development of China's urbanization, a lot of Sewage Plant faces the pressure that processing power increases, emission standard improves; Meanwhile, the occupation of land of Sewage Plant and running cost face again strict restriction.But there is the problems such as energy consumption is large, carbon source consumption is large, sludge yield is high, running cost is high in domestic and international existing cities and towns biological dephosphorize denitrification technique.Therefore, need the requirement according to Towns in a certain region sewage quality feature and energy-saving and emission-reduction at present badly, research and develop efficient urban wastewater treatment new technology.
Denitrifying Phosphorus Removal Technology is a kind of effective ways of transformation sewage treatment process.Compared with the aerobic dephosphorization process of tradition, denitrification dephosphorization bacterium can save the carbon source of about 50%, the oxygen requirement of 30%, reduces by the sludge yield of 50% simultaneously.Denitrifying phosphorus removal technique generally adopts two sludge system, and denitrifying phosphorus removing bacteria is present in Sludge System, and nitrifier separately exists in fixed-film biological reactor or aerobic nitrification sbr reactor device.DEPHANOX technique is a kind of typical two sludge system, but this technique HRT is long, and flow process is complicated, and TN removal effect is undesirable.In order to develop the denitrifying phosphorus removal technique of more simple and effective, studies in China person is by BAF and A
2o technique combines, adjustment A
2the processing parameter of O, and take full advantage of the advantages such as BAF occupation of land is little, nitrification effect good, strong shock resistance.
Two mud method denitrifying phosphorus removal technique is research in recent years focus, but existing research is handling object mainly with simulated wastewater or community life sewage greatly, larger with actual town sewage water quality difference; Treatment unit scale is general less, and influent quality, BAF filtrate type and processing parameter are different, and technology is still immature, is difficult to through engineering approaches application.
Summary of the invention
The deficiency that the present invention exists to overcome above prior art, combines activated sludge process and technology of biological membrane, discloses a kind of anaerobic/anoxic/aerobic-BAF (A in short-term
2o-BAF) combination process and device, by which raises the handling property to town sewage, carrying mark upgrading for urban wastewater treatment firm and providing effect technique reference.
The invention provides a kind of A
2o-BAF combination process, this combination process comprises following operating procedure:
1) anaerobic phosphorus release, 2) anoxic denitrification dephosphorization, 3) aerobic suction phosphorus, 4) precipitation, 5) BAF aerobic nitrification, 6) BAF back flushing;
Step one, anaerobic phosphorus release,
Sewage in pump sump enters anaerobic pond through water pump by water inlet pipe; After sewage fully mixes with mud, dirty Organic substance in water is fully absorbed by anaerobic pond mud and stores, and in mud, portion phosphate is released simultaneously;
Step 2, anoxic denitrification dephosphorization,
The mixed solution of anaerobic pond flows into anoxic pond by overflow weir, mud in the nitrification liquid (water outlet containing nitrate) produced with the BAF being back to anoxic pond and anoxic pond fully mixes, mud in anoxic pond utilizes the organism stored in body by the nitrate reduction in sewage, phosphoric acid salt in simultaneously stability sewage, realizes denitrification dephosphorization effect;
Step 3, aerobic suction phosphorus,
The mixed solution of anoxic pond flows into Aerobic Pond in short-term by overflow weir, is that Aerobic Pond carries out aeration in short-term, is removed by phosphoric acid salt remaining in sewage under aerobic condition by air pump and plate-type aerator, and by remaining organic substance decomposing;
Step 4, precipitation,
Aerobic Pond mixed solution enters settling tank by overflow in short-term, completes mud-water separation at settling tank; Face, pond supernatant liquor enters intermediate pool by overflow, and base sludge is back to anaerobic pond by water pump through mud return line;
Step 5, BAF aerobic nitrification,
By water pump, the water that intermediate pool stores is transported to BAF, under aerobic condition, ammonia nitrogen in sewage is oxidized to nitrate nitrogen; Effluent of aeration biological filter imports outlet sump through BAF rising pipe;
Step 6, BAF back flushing,
Back flushing is carried out to BAF, the water that outlet sump stores is transported to bottom BAF by water pump through backwash tube, washes, be BAF aeration by air pump simultaneously, carry out air purge.
A of the present invention
2o-BAF combination process, is further characterized in that,
The DO concentration of described Aerobic Pond in short-term controls at 1.0 ~ 2.0mg/L, and the DO concentration of BAF controls at 4.0 ~ 6.0mg/L.
Described BAF totally 2, adopts ceramic grain filter, diameter 3 ~ 5mm, porosity 50%; The empty bed HRT of BAF is 1.2h, and nitrated load is 0.4kgNH
4 +-N/ (m
3d), mixed liquid recycle ratio is 100%.
Described BAF backwashing period is 5 ~ 7 days, each air purge 10 ~ 15 minutes, and air water combines flushing 3 ~ 5 minutes, washes separately 3 ~ 5 minutes; Air purge intensity is 17.70L/ (m
2s), water backwash rate is 8.85L/ (m
2s).
Present invention also offers a kind of for A
2o-BAF Association Technology Devices, this device comprises pump sump, and with its anaerobic pond be connected successively, anoxic pond, in short-term Aerobic Pond, settling tank, intermediate pool, BAF and outlet sump; Anaerobic pond, anoxic pond and in short-term Aerobic Pond be respectively equipped with agitator, plate-type aerator is provided with in short-term bottom Aerobic Pond and BAF, each plate-type aerator is connected with air pump respectively, be connected with anaerobic pond by mud return line bottom described settling tank, intermediate pool is connected with BAF by BAF water inlet pipe, BAF is connected with outlet sump by BAF rising pipe, outlet sump is connected with anoxic pond by nitrification liquid return line, and outlet sump is connected with BAF by backwash tube; Described BAF, is divided into water distribution layer, supporting layer, filter material layer and Super High from the bottom to top.
A of the present invention
2o-BAF Association Technology Devices, is further characterized in that,
The volume ratio of described anaerobic pond, anoxic pond, in short-term Aerobic Pond is 1:2:1, and described three reaction tanks employing is built form jointly and jointly formed A
2o pond.
Be provided with perforation filter plate between described BAF water distribution layer and supporting layer, water distribution filter installed by perforation filter plate, above BAF perforation filter plate, be equipped with gravel bed and coarse sands layer respectively.
Described settling tank adopts tube settler structure formation, and inclined tube pitch angle is 60 °, and surface load is 1.2m
3/ (m
2h).
The deficiency that the present invention exists to overcome prior art, combines activated sludge process and technology of biological membrane, establishes a set of anaerobic/anoxic/aerobic-BAF (A in short-term
2o-BAF) technique and device, by its actual handling property investigated town sewage, carries mark upgrading for urban wastewater treatment firm and provides effect technique guarantee.
The present invention has following advantage relative to prior art:
1, adopt independently BAF (BAF) to complete nitrification, ammonia nitrogen removal is respond well; BAF floor space is less in addition, and sludge yield is low.
2, BAF water outlet is back to anoxic pond as nitrification liquid, increases the volume of anoxic pond simultaneously, enhance denitrification dephosphorization effect, improve the utilising efficiency of carbon source in sewage, decrease external carbon addition amount, improve the removal effect of total nitrogen and total phosphorus.
3, Aerobic Pond small volume in short-term, HRT controls at about 1h, mainly completes aerobic dephosphorization function; Its nitrification is limited, avoids the impact on biological phosphor-removing effect; The HRT shortening that system is total, floor space reduces, and sludge yield also reduces.
Accompanying drawing explanation
Fig. 1 is A of the present invention
2the process flow sheet of o-BAF combination process;
Fig. 2 is A of the present invention
2the structural representation of o-BAF Association Technology Devices;
Fig. 3 is the structural representation of BAF of the present invention (BAF) device;
Fig. 4 is that application drawing 1 technique is to the removal effect figure of COD;
Fig. 5 is the removal effect figure of application drawing 1 Process on Ammonia Nitrogen;
Fig. 6 is that application drawing 1 technique is to the removal effect figure of total nitrogen;
Fig. 7 is that application drawing 1 technique is to the removal effect figure of total phosphorus;
Fig. 8 is that application drawing 1 technique is to the removal effect figure of SS.
In figure, 1. pump sump, 2. anaerobic pond, 3. anoxic pond, 4. Aerobic Pond in short-term, 5. settling tank, 6. intermediate pool, 7. BAF, 8. outlet sump, 9. water inlet pipe, 10. mud return line, 11.BAF water inlet pipe, 12.BAF rising pipe, 13. nitrification liquid return lines, 14. backwash tubes, 15. water pumps, 16. agitators, 17. plate-type aerators, 18. air pumps, 71. water distribution layers, 72. supporting layers, 73. filter material layers, 74. Super Highs, 711. perforation filter plates, 712. water distribution filters, 721. gravel beds, 722. coarse sands layers.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
A as depicted in figs. 1 and 2
2o-BAF combination process and device, working process is:
(1) sewage in pump sump 1, under the effect of water pump 15, enters anaerobic pond 2 through water inlet pipe 9; Under agitator 16 acts on, sewage fully mixes with mud, and dirty Organic substance in water is fully absorbed by anaerobic pond 2 mud and stores, and in mud, portion phosphate is released simultaneously.
(2) then, the mixed solution of anaerobic pond 2 flows into anoxic pond 3 by overflow weir, and the nitrification liquid (water outlet containing nitrate) that BAF 7 produces also is back to anoxic pond 3; Under agitator 16 acts on, nitrification liquid fully mixes with mud, and the mud in anoxic pond 3 utilizes the organism stored in body by the nitrate reduction in sewage, and the phosphoric acid salt in simultaneously stability sewage, realizes denitrification dephosphorization effect.
(3) then, the mixed solution of anoxic pond 3 flows into Aerobic Pond 4 in short-term by overflow weir, air pump 18 by plate-type aerator 17 for Aerobic Pond 4 in short-term carries out aeration, agitator 16 make in short-term in Aerobic Pond 4 mixed solution keep suspended state; Under aerobic condition, in sewage, remaining phosphoric acid salt is removed, and remaining organism is decomposed, and simultaneously because aerobic HRT is shorter, aerobic nitrification effect is suppressed.
(4) Aerobic Pond 4 mixed solution enters settling tank 5 by overflow in short-term, and settling tank 5 adopts tube settler structure formation, completes mud-water separation at settling tank 5; Supernatant liquor enters intermediate pool 6 by overflow, and base sludge, under the effect of water pump 15, is back to anaerobic pond 2 by mud return line 10.
(5) water that intermediate pool 6 stores is transported to BAF 7 by water pump 15, air pump 18 is BAF 7 aeration, BAF 7 inside is filled with ceramic grain filter, haydite surface attachment microbial film, under aerobic condition, ammonia nitrogen in sewage is oxidized to nitrate nitrogen by microbial film; BAF 7 water outlet imports outlet sump 8 through BAF rising pipe 12, a part of clear water of outlet sump 8 is back to anoxic pond 3 by nitrification liquid return line 13 provides use, the remaining pollution-free clear water of outlet sump 8 is excreted in the middle of river through water shoot, is that nature uses as resource.
(6) when needs carry out back flushing to BAF 7, the water utilizing water pump 15 to be stored by outlet sump 8 is transported to bottom BAF 7 by backwash tube 14, washes ceramic grain filter; Meanwhile, utilize air pump 18 for BAF 7 aeration, carry out air purge.
BAF 7 backwashing period is 5 ~ 7 days, each air purge 10 ~ 15 minutes, and air water combines flushing 3 ~ 5 minutes, washes separately 3 ~ 5 minutes; Air purge intensity is 17.70L/ (m
2s), water backwash rate is 8.85L/ (m
2s).
A of the present invention
2o-BAF Association Technology Devices, as shown in Figure 2, comprises pump sump 1, and with its anaerobic pond 2 be connected successively, anoxic pond 3, in short-term Aerobic Pond 4, settling tank 5, intermediate pool 6, BAF 7 and outlet sump 8; Anaerobic pond 2, anoxic pond 3 and in short-term Aerobic Pond 4 be respectively equipped with agitator 16, be provided with plate-type aerator 17 bottom Aerobic Pond 4 and BAF 7 in short-term, two plate-type aerators 17 are connected with two air pumps 18 respectively; Be connected with anaerobic pond 2 by mud return line 10 bottom settling tank 5, intermediate pool 6 is connected with BAF 7 by BAF water inlet pipe 11, BAF 7 is connected with outlet sump 8 by BAF rising pipe 12, outlet sump 8 is connected with anoxic pond 3 by nitrification liquid return line 13, and outlet sump 8 is connected with BAF 7 by backwash tube 14.
As shown in Figure 3, BAF 7 of the present invention is divided into water distribution layer 71, supporting layer 72, filter material layer 73 and Super High 74 from the bottom to top, filter material layer 73 is filled with ceramic grain filter, filter plate 711 of boring a hole is provided with between water distribution layer 71 and supporting layer 72, water distribution filter 712 installed by perforation filter plate 711, above BAF 7 bores a hole filter plate 711, be equipped with gravel bed 721 and coarse sands layer 722 respectively, play the effect preventing water distribution filter 712 from blocking.
At A
2in o-BAF Association Technology Devices, A
2o pond comprises anaerobic pond 2, anoxic pond 3 and Aerobic Pond 4, BAF pond and BAF 7 in short-term.The device process water yield is 20m
3/ d, A
2o pond HRT is 4.0h, and wherein, the HRT of anaerobic pond 2 is 1.0h, and the HRT of anoxic pond 3 is 2.0h, and the HRT of Aerobic Pond 4 is 1.0h, A in short-term
2o pond mud age is 23d, and return sludge ratio is 100%.The DO of Aerobic Pond 4 controls at 1.0-2.0mg/L in short-term.Settling tank 5 adopts tube settler structure formation, and surface load is 1.2m
3/ (m
2h).
BAF 7 of the present invention totally 2, every diameter 0.6m, total height 3.0m, water distribution layer height 0.4m, supporting layer height 0.8m, height of filter media layer 1.35m, Super High height 0.45m; Useful volume 0.79m
3, filter material layer volume 0.38m
3; BAF 7 adopts ceramic grain filter, diameter 3 ~ 5mm, porosity 50%.The filtering velocity in filter tank is 1.43m
3/ (m
2h), empty bed HRT is 1.2h, nitrated load 0.4kgNH
4 +-N/ (m
3d).Mixed liquid recycle ratio is 100%, DO concentration, 4 ~ 6mg/L.
Test examples 1:
Adopt this technique and device, carry out validity check:
Test the distributing well that former water takes from Shenzhen Sewage Plant, influent quality is as shown in table 1.
Influent quality tested by table 1
| Index | Scope (mg/L) | Mean value (mg/L) |
| COD | 120～587 | 249 |
| SS | 37～244 | 108.33 |
| TN | 11～70 | 40 |
| NH 3-N | 12～59 | 29 |
| TP | 0.5～1.9 | 1.1 |
Processing condition: the process water yield is 20m
3/ d, A
2o pond HRT is 4.0h, and mud age is 23d, and return sludge ratio is 100%, and the DO of aerobic section controls at 1.0-2.0mg/L.Settling tank 5 adopts tube settler structure formation, and surface load is 1.2m
3/ (m
2h).The empty bed HRT of BAF 7 is 1.2h, nitrated load 0.4kgNH
4 +-N/ (m
3d), mixed liquid recycle ratio is 100%, DO concentration is 4-6mg/L.
1, COD removal effect
Combination process to the treatment effect of COD as shown in Figure 4.Influent COD is 120.00 ~ 586.67mg/L, average 248.75mg/L, and aqueous concentration remains on below 50mg/L substantially, and average aqueous concentration is 28.44mg/L, average removal rate 88.57%.As seen from the figure, although there is obviously fluctuation in inlet COD concentration, A
2o-BAF system keeps stable to the removal effect of COD.
2, ammonia nitrogen and total nitrogen removal effect
Duration of test ammonia nitrogen and total nitrogen removal effect are as shown in Figure 5 and Figure 6.Influent ammonium concentration is between 11.52 ~ 58.61mg/L, and average out to 28.77mg/L, aqueous concentration remains on below 8mg/L, and mean concns is 2.63mg/L, average removal rate 90.87%.Water inlet total nitrogen concentration is between 10.97 ~ 69.96mg/L, and mean concns 40.37mg/L, water outlet total nitrogen is 9.51mg/L, average removal rate 76.45%.Visible, although influent ammonia nitrogen and total nitrogen concentration fluctuation are comparatively greatly, pilot test system removal effect is comparatively stable.
3, dephosphorization characteristics
Combination process to the removal capacity of total phosphorus as shown in Figure 7.Stable operation stage, water inlet total phosphorus is at 0.49 ~ 1.88mg/L, and mean concns 1.04mg/L, final outflow water total phosphorus is 0.42mg/L, and average removal rate rises to 59.62%, and water outlet can meet the standard of drainage of country-level A.
4, SS removal behavior
Combination process to the removal capacity of SS as shown in Figure 8.SS is between 37 ~ 244mg/L in water inlet, and mean concns is 108.33mg/L, removal effect kept stable, and settling tank water outlet SS mean concns is 48.30mg/L, and final BAF water outlet SS is 9.21mg/L, SS average removal rate is 91%.A
2o-BAF pilot test system medium sediment pool has taken into account sludge reflux and BAF water inlet SS control overflow, and its design surface load is 1.2m
3/ (m
2h), slightly higher than general second pond, therefore water outlet SS is also higher; After BAF filteration, water outlet SS can be down to below 10mg/L, but wants often to carry out back flushing to BAF, and backwashing period is 5-7 days.
Test examples 2:
Adopt this process unit, carry out validity check, combination process treatment effect under research different B AF load:
Test the distributing well that former water takes from Shenzhen Sewage Plant, influent quality as mentioned before.
Processing condition:
Different operation phase BAF operating mode is as shown in the table.Start to 81d from system, system is run under single BAF condition, and nitrated load is 0.8kgNH
4 +-N/ (m
3d), filtering velocity is 5.66m/h, and the empty bed residence time is 0.3h; After 82d, start again a set of BAF system, change two BAF into and run, nitrated load is down to 0.4kgNH
4 +-N/ (m
3d), filtering velocity is down to 2.83m/h, and empty bed extended residence time is 0.6h.
Table 2 A
2o-BAF technique BAF pond different steps operation condition
| Processing parameter | Operating mode 1 | Operating mode 2 |
| Working time (d) | 1-81 | 82-117 |
| BAF filtering velocity (m/h) | 5.66 | 2.83 |
| The empty bed residence time (h) in BAF pond | 0.3 | 0.6 |
| Nitrated volumetric loading (the kgNH of BAF 4 +-N/(m 3·d)) | 0.80 | 0.40 |
Treatment effect: along with nitrated volumetric loading is from 0.8kgNH
4 +-N/ (m
3d) 0.4kgNH is down to
4 +-N/ (m
3d), the removal effect of system to ammonia nitrogen, total nitrogen is obviously improved, and ammonia nitrogen removal frank brings up to 88.0% from 66.2%, and water outlet ammonia nitrogen concentration is down to 2.5mg/L by 6.4mg/L; Nitrogen removal rate brings up to 69.9% by 51.7%, and water outlet TN concentration is down to 9.8mg/L by 14.7mg/L.Meanwhile, system brings up to 91.0% to the clearance of SS from 79.0%.Under different B AF load, system COD removal effect keeps stable, average removal rate 82.5%.
Above-mentioned embodiment is the preferred embodiments of the present invention, can not limit the present invention, and any of other does not deviate from technical scheme of the present invention and the substitute mode of the change made or other equivalence, is included within protection scope of the present invention.
Claims (8)
1. an A
2o-BAF combination process, this combination process comprises following operating procedure:
1) anaerobic phosphorus release, 2) anoxic denitrification dephosphorization, 3) aerobic suction phosphorus, 4) precipitation, 5) BAF aerobic nitrification, 6) BAF back flushing;
Step one, anaerobic phosphorus release,
Sewage in pump sump enters anaerobic pond through water pump by water inlet pipe; After sewage fully mixes with mud, dirty Organic substance in water is fully absorbed by anaerobic pond mud and stores, and in mud, portion phosphate is released simultaneously;
Step 2, anoxic denitrification dephosphorization,
The mixed solution of anaerobic pond flows into anoxic pond by overflow weir, mud in the nitrification liquid (water outlet containing nitrate) produced with the BAF being back to anoxic pond and anoxic pond fully mixes, mud in anoxic pond utilizes the organism stored in body by the nitrate reduction in sewage, phosphoric acid salt in simultaneously stability sewage, realizes denitrification dephosphorization effect;
Step 3, aerobic suction phosphorus,
The mixed solution of anoxic pond flows into Aerobic Pond in short-term by overflow weir, is that Aerobic Pond carries out aeration in short-term, is removed by phosphoric acid salt remaining in sewage under aerobic condition by air pump and plate-type aerator, and by remaining organic substance decomposing;
Step 4, precipitation,
Aerobic Pond mixed solution enters settling tank by overflow in short-term, completes mud-water separation at settling tank; Face, pond supernatant liquor enters intermediate pool by overflow, and base sludge is back to anaerobic pond by water pump through mud return line;
Step 5, BAF aerobic nitrification,
By water pump, the water that intermediate pool stores is transported to BAF, under aerobic condition, ammonia nitrogen in sewage is oxidized to nitrate nitrogen; Effluent of aeration biological filter imports outlet sump through BAF rising pipe;
Step 6, BAF back flushing,
Back flushing is carried out to BAF, the water that outlet sump stores is transported to bottom BAF by water pump through backwash tube, washes, be BAF aeration by air pump simultaneously, carry out air purge.
2. A according to claim 1
2o-BAF combination process, is characterized in that: the DO concentration of described Aerobic Pond in short-term (4) controls at 1.0 ~ 2.0mg/L, and the DO concentration of BAF (7) controls at 4.0 ~ 6.0mg/L.
3. A according to claim 1
2o-BAF combination process, is characterized in that, described BAF (7) totally 2, adopts ceramic grain filter, diameter 3 ~ 5mm, porosity 50%; The empty bed HRT of BAF (7) is 1.2h, and nitrated load is 0.4kgNH
4 +-N/ (m
3d), mixed liquid recycle ratio is 100%.
4. A according to claim 1
2o-BAF combination process, is characterized in that, described BAF (7) backwashing period is 5 ~ 7 days, each air purge 10 ~ 15 minutes, and air water combines flushing 3 ~ 5 minutes, washes separately 3 ~ 5 minutes; Air purge intensity is 17.70L/ (m
2s), water backwash rate is 8.85L/ (m
2s).
5. an A
2 o-BAF Association Technology Devices, comprise pump sump (1), and with its anaerobic pond be connected successively (2), anoxic pond (3), in short-term Aerobic Pond (4), settling tank (5), intermediate pool (6), BAF (7) and outlet sump (8); Anaerobic pond (2), anoxic pond (3) and in short-term Aerobic Pond (4) be respectively equipped with agitator (16), Aerobic Pond (4) and BAF (7) bottom are provided with plate-type aerator (17) in short-term, and each plate-type aerator (17) is connected with air pump (18) respectively; It is characterized in that, described settling tank (5) bottom is connected with anaerobic pond (2) by mud return line (10), intermediate pool (6) is connected with BAF (7) by BAF water inlet pipe (11), BAF (7) is connected with outlet sump (8) by BAF rising pipe (12), outlet sump (8) is connected with anoxic pond (3) by nitrification liquid return line (13), and outlet sump (8) is connected with BAF (7) by backwash tube (14); Described BAF (7), is divided into water distribution layer (71), supporting layer (72), filter material layer (73) and Super High (74) from the bottom to top.
6. A according to claim 5
2o-BAF Association Technology Devices, is characterized in that, described anaerobic pond (2), anoxic pond (3), the in short-term volume ratio of Aerobic Pond (4) are 1:2:1, and described three reaction tanks employing is built form jointly and jointly formed A
2o pond.
7. A according to claim 5
2o-BAF Association Technology Devices, it is characterized in that, in, filter plate (711) of boring a hole is provided with between described BAF (7) water distribution layer (71) and supporting layer (72), water distribution filter (712) is installed in perforation filter plate (711), above BAF (7) perforation filter plate (711), has been equipped with gravel bed (721) and coarse sands layer (722) respectively.
8. A according to claim 5
2o-BAF Association Technology Devices, is characterized in that, described settling tank (5) adopts tube settler structure formation, and inclined tube pitch angle is 60 °, and surface load is 1.2m
3/ (m
2h).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410654568.5A CN104828941A (en) | 2014-11-17 | 2014-11-17 | A2O-BAF combined process and A2O-BAF combined device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410654568.5A CN104828941A (en) | 2014-11-17 | 2014-11-17 | A2O-BAF combined process and A2O-BAF combined device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104828941A true CN104828941A (en) | 2015-08-12 |
Family
ID=53807201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410654568.5A Pending CN104828941A (en) | 2014-11-17 | 2014-11-17 | A2O-BAF combined process and A2O-BAF combined device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104828941A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481201A (en) * | 2016-01-26 | 2016-04-13 | 甘肃金桥水科技（集团）股份有限公司 | Integrated sewage treatment and reuse device |
| 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 |
| CN110204150A (en) * | 2019-07-04 | 2019-09-06 | 安吉起航环境工程有限公司 | Municipal sewage mentions mark reforming technology |
| CN110467321A (en) * | 2019-09-10 | 2019-11-19 | 轻工业环境保护研究所 | A kind of A2The promotion of/O technique |
| CN112225397A (en) * | 2020-09-28 | 2021-01-15 | 北京恩菲环保技术有限公司 | Sewage treatment system and method based on double-sludge denitrification dephosphorization and biological filter tower |
| CN112279462A (en) * | 2020-10-20 | 2021-01-29 | 江门市新会区龙泉污水处理有限公司 | Sewage treatment method |
| CN113233599A (en) * | 2021-06-15 | 2021-08-10 | 西昌学院 | Method for synchronously removing COD (chemical oxygen demand), ammonia nitrogen, total nitrogen and total phosphorus in micro-polluted water based on improved biological filter column |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2396312A (en) * | 2002-12-17 | 2004-06-23 | Sev Trent Water Purification L | A biological filter with backwash means |
| CN102531298A (en) * | 2012-03-02 | 2012-07-04 | 北京工业大学 | Sewage treatment device and method for enhanced denitrification A/A/O (Anodic Aluminum Oxide) and deoxygenation BAF (Biological Aerated Filter) |
| CN104098228A (en) * | 2014-07-22 | 2014-10-15 | 中国矿业大学 | Organic amine wastewater treatment method |
-
2014
- 2014-11-17 CN CN201410654568.5A patent/CN104828941A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2396312A (en) * | 2002-12-17 | 2004-06-23 | Sev Trent Water Purification L | A biological filter with backwash means |
| CN102531298A (en) * | 2012-03-02 | 2012-07-04 | 北京工业大学 | Sewage treatment device and method for enhanced denitrification A/A/O (Anodic Aluminum Oxide) and deoxygenation BAF (Biological Aerated Filter) |
| CN104098228A (en) * | 2014-07-22 | 2014-10-15 | 中国矿业大学 | Organic amine wastewater treatment method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481201A (en) * | 2016-01-26 | 2016-04-13 | 甘肃金桥水科技（集团）股份有限公司 | Integrated sewage treatment and reuse device |
| 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 |
| CN110204150A (en) * | 2019-07-04 | 2019-09-06 | 安吉起航环境工程有限公司 | Municipal sewage mentions mark reforming technology |
| CN110467321A (en) * | 2019-09-10 | 2019-11-19 | 轻工业环境保护研究所 | A kind of A2The promotion of/O technique |
| CN112225397A (en) * | 2020-09-28 | 2021-01-15 | 北京恩菲环保技术有限公司 | Sewage treatment system and method based on double-sludge denitrification dephosphorization and biological filter tower |
| CN112279462A (en) * | 2020-10-20 | 2021-01-29 | 江门市新会区龙泉污水处理有限公司 | Sewage treatment method |
| CN113233599A (en) * | 2021-06-15 | 2021-08-10 | 西昌学院 | Method for synchronously removing COD (chemical oxygen demand), ammonia nitrogen, total nitrogen and total phosphorus in micro-polluted water based on improved biological filter column |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104828941A (en) | A2O-BAF combined process and A2O-BAF combined device | |
| CN104045156B (en) | Integrated high-efficiency self-supported denitrification reactor | |
| CN103936150B (en) | The low C/N municipal effluent short distance nitration/Anammox+denitrification method of Continuous Flow | |
| CN102583743B (en) | Dual-sludge denitrification dephosphorizing and denitrifying A/A-O device and method | |
| CN103755095B (en) | Nitrogen and phosphorus removal method coupling A/O step-feed MBBR (moving bed biofilm reactor) process with cloth filter | |
| CN108585384B (en) | MBBR high-standard sewage treatment system and treatment process | |
| CN104512963B (en) | A kind of multistage simultaneous nitrification-denitrification biofilm system denitrogenation method of integral type and device | |
| CN101973674B (en) | Hydrocyclone solid-liquid separation type SBR-technique domestic sewage treatment device and application method thereof | |
| CN103435220B (en) | Coupled A[2]O suspended filler process and cloth media filter integrated nitrogen and phosphorus removal device and method | |
| CN107585974B (en) | Sewage treatment method based on MBBR (moving bed biofilm reactor) process | |
| CN101746931B (en) | Denitrification dephosphorization biological treatment and filtration integral sewage treatment system and method thereof | |
| CN105753153A (en) | DEAMOX (denitrifying ammonium oxidation) based efficient biological nitrogen and phosphors removal device adopting improved A/O (anoxic/oxic) four-point step-feeding as well as application method | |
| CN106116045A (en) | A kind of efficiently villages and small towns waste water treating and reutilizing device and technique thereof | |
| CN201598224U (en) | Biological nitrogen and phosphorus removal treatment and filter integrated sewage treatment system | |
| CN110117070A (en) | Energy-efficient compact compound A2/ O dephosphorization denitrogenation processing system and treatment process | |
| CN202744423U (en) | Integrated bio-contact oxidation device for treating rural domestic sewage | |
| CN103183454B (en) | Coupling type biological denitrification method and system thereof | |
| CN105923771A (en) | Self-circulation biological denitrification reactor | |
| CN105174642A (en) | Efficient biological denitrification method for sewage | |
| CN203999133U (en) | A kind of integrated high-efficiency self-supported denitrification reactor | |
| CN104108836B (en) | A kind of device and method of micro-polluted water synchronous denitrification dephosphorizing | |
| CN204125308U (en) | A kind of A 2o-BAF combination process pilot plant | |
| CN203238141U (en) | Sewage biological treatment membrane filtration system | |
| CN109775936B (en) | Low-energy-consumption domestic sewage treatment system | |
| CN107954516A (en) | Circulation improvement A/O integrated sewage disposal techniques in one kind four |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150812 |
|
| WD01 | Invention patent application deemed withdrawn after publication |