CN201485361U - Dephosphorizing and denitrifying granular sludge bioreactor - Google Patents
Dephosphorizing and denitrifying granular sludge bioreactor Download PDFInfo
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- CN201485361U CN201485361U CN2009201691891U CN200920169189U CN201485361U CN 201485361 U CN201485361 U CN 201485361U CN 2009201691891 U CN2009201691891 U CN 2009201691891U CN 200920169189 U CN200920169189 U CN 200920169189U CN 201485361 U CN201485361 U CN 201485361U
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Abstract
The utility model relates to a dephosphorizing and denitrifying granular sludge bioreactor used for the biological phosphorus and nitrogen removal process in sewage treatment. The bioreactor comprises multi-stage partition plates arranged inside a biological reaction tank in a staggered manner and dividing the biological reaction tank into an oxygen-free zone, an anaerobic zone and an aerobic zone; a plurality of meshed plates are arranged on the water-carrying cross sections of the oxygen-free zone, the anaerobic zone and the aerobic zone, the oxygen-free zone, the anaerobic zone and the aerobic zone are distributed in sequence from the sewage inflow end to the sewage outflow end of the biological reaction tank; a secondary settlement tank is connected behind the aerobic zone; the oxygen-free zone and the anaerobic zone are divided into five compartments respectively; the aerobic zone is divided into five compartments; a sewage distributing pipe is connected with a first oxygen-free zone, a first anaerobic zone and a first aerobic zone; and the returned activated sludge of the secondary settlement tank is connected with the first oxygen-free zone through a sludge return pipe. The dephosphorizing and denitrifying granular sludge bioreactor adopts the meshed plates to change the flow environment and the condensation condition and promote the production of the aerobic or the anaerobic granular sludge inside the reactor, thereby greatly improving the biochemical reactions for phosphorus and nitrogen removal. Besides, the efficiency of the biological reaction is increased by more than 20% and the emission of phosphorus and nitrogen pollutants in the sewage meets the standard.
Description
Technical field the utility model belongs to the dirty water living creature processing technique field, particularly relates to the dephosphorization denitrogenation granule sludge bio-reactor that a kind of saprobia dephosphorization and denitrification process process is used.
Background technology is in the activated sludge process of biological sewage treatment, and dephosphorization denitrogenation is a comparatively complicated Technology, and along with the quickening of control body eutrophication process, increasing plumbing scientific worker has turned one's attention to dephosphorization denitrogenation.In recent years there are many scientific payoffss and patented technology to come out, as the short-cut denitrification technology that constitutes by anaerobic-aerobic-anoxic, A
2Nitrated dephosphorization technique of N or the like.But these technology are only put forth effort on biochemical reaction, and the comprehensive effectiveness that how to promote bio-reactor on the whole be yet there are no report.Bio-reactor is a combined system, except that biochemical reaction, comprises that also material distributes the important steps such as transmission of quality and energy.
Mass transfer, i.e. the transmission of quality is the constitutive requirements of Sludge System.In Sludge System, exist two kinds of mass transfer processes, the one, oxygen transmits to sewage from air, and the 2nd, organism if can make the two common raising from the transmission of sewage to microbial cells, and biological processes just can be accelerated greatly.
In Sludge System, can form multiple granule sludge such as aerobic, anaerobism as condition is suitable, granule sludge is granular microbial aggregate, particle diameter is between 2～8mm, form by multiple germs collect, a large amount of denitrification phosphorus-collecting bacterium and the enrichment of nitrifier in granule sludge make it have powerful biological activity.Test shows that aerobic particle mud can reach more than 97% the clearance of ammonia nitrogen and phosphorus.
In activated sludge process, the mobile turbulence state that is in of mixed solution in the bio-reactor, turbulent motion can promote the mixing between material, improves rate of diffusion.Than with molecular diffusion, turbulent mass transfer will increase ten thousand times more than.But turbulent flow is a kind of flow state at random, and behind aerator, current revolve roll rises especially, and big and small vortex is filling water body, and outward appearance is very disorderly, and people often give appellation with " turbulent flow ".Turbulent flow heavy in hand can make reactor efficiency low.
Depend on the collision gathering of organism under the turbulent-flow conditions because of the coalescent increase of granule sludge.The forming process of aerobic particle mud, except that biochemical condition, the hydrodynamic performance of reactor is its important factor.The formation of aerobic particle mud can improve the biological concentration of reactor, to improving its task performance, guarantees that the operation of bioprocess efficient stable is significant.
The utility model content is at the problem that exists in the current activated sludge process dephosphorization denitrogenation, and the technical problems to be solved in the utility model provides a kind of dephosphorization denitrogenation granule sludge bio-reactor of simple in structure, high efficiency.This reactor can be accelerated biological respinse speed, improves bio-reactor usefulness, quickens to form granule sludge.
It is as follows that the utility model solves the problems of the technologies described above the technical scheme of being taked, a kind of dephosphorization denitrogenation granule sludge bio-reactor; Be provided with the multistage dividing plate of mutual dislocation in biological reaction tank, dividing plate is divided into oxygen-starved area, anaerobic zone and aerobic zone with biological reaction tank; It is characterized in that: the water-carrying section of oxygen-starved area, anaerobic zone, aerobic zone is provided with web plate; Biological reaction tank flows into to hold to the ordering of outflow end from sewage and is followed successively by oxygen-starved area, anaerobic zone and aerobic zone, and the outflow tube behind the aerobic zone connects second pond.
Because the biochemical reaction process difference of oxygen-starved area, anaerobic zone and each reaction zone of aerobic zone in the biological reaction tank, dominant bacteria and growth environment difference thereof, therefore each reaction zone to biological reaction tank carries out lattice, oxygen-starved area and anaerobic zone are respectively established two lattice, aerobic zone is established five lattice, and promptly the oxygen-starved area comprises first oxygen-starved area and second oxygen-starved area; Anaerobic zone comprises first anaerobic zone and second anaerobic zone; Aerobic zone comprise first aerobic zone, second aerobic zone ... with the 5th aerobic zone.
The lattice quantity of aerobic zone is according to treatment scale and sewage character and be not limited to five lattice surely.
The sewage water distributing pipe and first oxygen-starved area, first anaerobic zone and first aerobic zone join, to first oxygen-starved area, first anaerobic zone and the pending sewage of the first aerobic zone injection allocation.The sewage ratio that enters each reaction zone is distributed by sewage character.
According to the character of sewage, the sewage water distributing pipe also joins with second and third, four aerobic zones, directly to second and third, the pending sewage of four aerobic zone injection allocations.
Each reaction zone structure of oxygen-starved area, anaerobic zone and aerobic zone is basic identical, but oxygen-starved area and anaerobic zone do not carry out aeration, only carry out aeration at aerobic zone.The web plate quantity that the web plate quantity that the front reaction district water-carrying section of oxygen-starved area, anaerobic zone and aerobic zone is provided with is provided with more than rear end reaction zone water-carrying section.With the oxygen-starved area is example: as, the water-carrying section of first oxygen-starved area is provided with 6～12 blocks of web plates or more, and the water-carrying section of second oxygen-starved area then is provided with 3～6 blocks of web plates or slightly many.
The returnedactivatedsludge of second pond joins through the reflux sludge tube and first oxygen-starved area, and returnedactivatedsludge is concentrated disposable first oxygen-starved area that enters.
The utility model is on the basis of activated sludge process dephosphorization and denitrification process, in the oxygen-starved area, add web plate on anaerobic zone and the different separately water-carrying section of aerobic zone, thereby graft into biomembranous all usefulness, solved the approaches to cultivation question of leading bacterial classification in the reaction tank, and be that various types of granule sludges cultivations create conditions.Application the utility model is disposed of sewage, be by optimizing mass transfer effect, material balance, microbial film and activated sludge process being combined, facilitate granule sludge to accelerate to form, thereby the integral body that realizes bio-reactor usefulness promote, and reaches dephosphorization denitrogenation high efficient and convenient purpose.
Being of main body bacterial classification nitrifier of biological denitrificaion be the type bacterium on one's own account.Its kinetic parameter μ
NAnd K
NAll very low, less than 1/10 of heterotrophic organism, be difficult in and form dominant population in the Sludge System, influence the raising of nitric efficiency.But microorganism all has the trend that is attached to solid surface breeding growth, and the generation cycle that is set to of grid has been created a good breeding condition than long nitrifier, also provides possibility for biomembrance process and combining of activated sludge process.
The utility model utilizes web plate to change flowing environment and coherence condition from the flocculation principle, facilitates aerobic or anaerobic grain sludge forms in reactor, and the biomass that has improved reactor has been realized the big upgrade of dephosphorization denitrogenation biochemical reaction.According to the biofloculation principle, the utility model granule sludge is cultivated the district, and it crosses the net flow rate control at 0.1～0.3m/s.
The effect of web plate is:
The first, the change of isotropic turbulent flow will be approached in the flow field behind the flow section web plate, and the web plate adjustment is also optimized the turbulent flow flow field of each respective regions, being provided with change turbulent structure and energy distribution general layout of web plate.The turbulent mass transfer process also will be adjusted and optimized with the setting of web plate, make its cohesion that helps mass transfer and biological floe, improving the various usefulness of reactor, and and then form the Biochemistry Reaction System of granule sludge.
The second, the stationary flow structure is to improve the level of utilizing of energy;
The 3rd, for biomembranous growth provides carrier, biomembrance process and activated sludge process are organically combined;
The 4th, build the hydrokinetics environment, to accelerate the formation of different sorts granule sludge.
Granule sludge of the present utility model forms mechanism:
The first, good carrier has been created in the biomembranous growth that is set to of web plate, and along with the growth of microbial film on web plate expanded, the water-carrying section of web plate reduces gradually, and crossing net flow velocity and flow shear also increases gradually, and the part biological film will peel off and enter water body.
The second, because web plate is according to the biofloculation principle design, under the turbulent flow pulsation and vortex winding of the microbial film that peels off on the web plate, will become the core of biofloculation and granule sludge is grown in constantly increase at last in flow field behind the net.
The utility model has been used to test more than 3 years, and the utility model is used for sewage disposal, and with the activated sludge process dephosphorization and denitrification process comparison of present stage, the biological respinse enhancing efficiency is facilitated the qualified discharge of sewerage nitrogen and phosphor pollutent more than 20%.The utility model is significantly saved investment and energy consumption.Because the granulating of active sludge has not only improved the biomass of reaction tank greatly, reduce reactor volume, also will improve the design loading and the effluent quality of second pond, help the reusing sewage of water-deficient area, economic benefit is obvious.
Description of drawings Fig. 1 is structure of the present utility model and schematic flow sheet,
Fig. 2 is the structural representation of reaction tank,
Fig. 3 is the schematic perspective view that web plate is provided with at each runner.
Among the figure: 1-oxygen-starved area, 101-first oxygen-starved area, 102-second oxygen-starved area, 2-anaerobic zone, 201-first anaerobic zone, 202-second anaerobic zone, 3-aerobic zone, 301-first aerobic zone, 302-second aerobic zone, 303-the 3rd aerobic zone, 304-the 4th aerobic zone, 305-the 5th aerobic zone, the 4-second pond, 5-web plate, 501-front end web plate, 502-rear end web plate, 6-sewage water distributing pipe, 7-reflux sludge tube, the 8-biological reaction tank, 9-dividing plate, 10-outflow tube.
Embodiment is as shown in Figure 1 to Figure 3: a kind of dephosphorization denitrogenation granule sludge bio-reactor; Comprise the multistage dividing plate 9 that is located at the mutual dislocation in the biological reaction tank 8, dividing plate 9 is divided into oxygen-starved area 1, anaerobic zone 2 and aerobic zone 3 with biological reaction tank 8; The water-carrying section of oxygen-starved area 1, anaerobic zone 2, aerobic zone 3 is provided with several piece web plate 5; Biological reaction tank 8 flows into to hold to the ordering of outflow end from sewage and is followed successively by oxygen-starved area 1, anaerobic zone 2 and aerobic zone 3, and aerobic zone 3 back connect second ponds 4 through outflow tube 10.
In order to adapt to the biochemical reaction process of each reaction tank of bio-reactor, adapt to dominant bacteria and growth environment thereof, be provided with dividing plate 9 in oxygen-starved area 1, anaerobic zone 2 and the aerobic zone 3, dividing plate 9 is with the lattice that carries out of biological reaction tank 8; Oxygen-starved area 1 is divided into first oxygen-starved area 101 and second oxygen-starved area 102; Anaerobic zone 2 is divided into first anaerobic zone 201 and second anaerobic zone 202; Aerobic zone 3 is divided into first aerobic zone 301, second aerobic zone 302, the 3rd aerobic zone 303, the 4th aerobic zone 304 and the 5th aerobic zone 305.
Sewage water distributing pipe 6 and first oxygen-starved area 101, first anaerobic zone 201 and first aerobic zone 301 join, to first oxygen-starved area, first anaerobic zone and the pending sewage of the first aerobic zone injection allocation.The sewage ratio that enters each reaction zone is distributed by sewage character.
According to the character of sewage, sewage water distributing pipe 6 also joins 304 with second aerobic zone 302, the 3rd aerobic zone 303 and the 4th aerobic zone, directly to second and third, the pending sewage of four aerobic zone injection allocations.
Oxygen-starved area 1, anaerobic zone 2 and aerobic zone 3 each reaction zone structures are basic identical; Referring to Fig. 2: oxygen-starved area 1, anaerobic zone 2 and aerobic zone 3 respectively distinguish web plate 5 quantity that web plate 5 quantity that front reaction district water-carrying section is provided with are provided with more than each district's rear end reaction zone water-carrying section.In other words, the web plate 5 that front reaction district water-carrying section is provided with distributes intensive relatively, i.e. the spacing of front reaction district web plate 5 is intensive; The web plate 5 that rear end reaction zone water-carrying section is provided with distributes sparse relatively, and promptly the spacing of rear end reaction zone web plate 5 is sparse than 5 spacings of front reaction district web plate.
The water-carrying section of first oxygen-starved area 101 of present embodiment in other words the first anoxic runner 101 be provided with six web plate 5, the second oxygen-starved areas 102 water-carrying section in other words the second anoxic runner 101 three blocks of web plates 5 are set;
The water-carrying section that the water-carrying section 2 of first anaerobic zone 201 of present embodiment is provided with six web plate 5, the second anaerobic zones 202 is provided with three blocks of web plates 5;
The water-carrying section that the water-carrying section 3 of first aerobic zone 301 of present embodiment is provided with six blocks of web plates, 5, the second aerobic zones 302, the 3rd aerobic zone 303, the 4th aerobic zone 305 and the 5th aerobic zone 305 is provided with three blocks of web plates 5 respectively.
According to the scale and the character of processed sewage, web plate 5 its quantity of each reaction zone setting are adjustable, are not limited to the cited quantity of embodiment in biological reaction tank 8.Pending sewage enters the first anoxic runner 101 from sewage water distributing pipe 6 and flows into the second anoxic runner 102 through web plate 5 backs that this runner is provided with, flow into first anaerobic zone 201 by the web plate 5 that is provided with in the second anoxic runner 102 and this runner 102 thereof again, 2 sewage of handling conflux with the sewage of not handled that enters first anaerobic zone 201 from sewage water distributing pipe 6 again through the oxygen-starved area for this part, the web plate 5 that is provided with by first anaerobic zone, 201 water-carrying section flows into second anaerobic zone 202 ... by that analogy; Promptly the 5th aerobic zone 305 sewage of finishing processing enters second pond 4 by the outflow tube 10 that joins with second pond 4 in later and decadent stage of a school of thought road.
Referring to Fig. 1: concentrate the back returnedactivatedsludge through second pond 4 precipitations and join, with concentrated disposable first oxygen-starved area that enters of returnedactivatedsludge through the reflux sludge tube 7 and first oxygen-starved area 101.
Web plate 5 materials are not limit, as long as microorganism is not had toxic action.Generally can draw and form by the plastic plate cutting.Mesh is square, rhombus, polygonal all can, shape is not limit.
Web plate 5 is divided into two kinds by the mesh size size, front end web plate 501 and terminal web plate 502; Front end web plate 501 mesh are 30mm * 30mm; Web plate 502 mesh in rear end are 50mm * 50mm.
Impel granule sludge to form for ease of biofilm development, front end web plate 501 is in the initial runner setting of each reaction zone, and rear end web plate 502 is provided with in the follow-up runner of each reaction zone; Referring to Fig. 2: the water-carrying section of first oxygen-starved area 101, first anaerobic zone 201 and first aerobic zone 301 is provided with front end web plate 501; The water-carrying section of second oxygen-starved area 102, second anaerobic zone 202, second aerobic zone 302, the 3rd aerobic zone 303, the 4th aerobic zone 304 and the 5th aerobic zone 305 is provided with rear end web plate 502.
Claims (10)
1. dephosphorization denitrogenation granule sludge bio-reactor; Comprise the multistage dividing plate that is located at the mutual dislocation in the biological reaction tank, dividing plate is divided into oxygen-starved area, anaerobic zone and aerobic zone with biological reaction tank; It is characterized in that: the water-carrying section of described oxygen-starved area (1), described anaerobic zone (2), described aerobic zone (3) is provided with several piece web plate (5); Described biological reaction tank (8) flows into to hold to the ordering of outflow end from sewage and is followed successively by described oxygen-starved area (1), described anaerobic zone (2) and described aerobic zone (3), and described aerobic zone (3) back connects second pond (4) through outflow tube (10).
2. a kind of dephosphorization denitrogenation granule sludge bio-reactor as claimed in claim 1, it is characterized in that: be provided with dividing plate (9) in described oxygen-starved area (1), described anaerobic zone (2) and the described aerobic zone (3), described dividing plate (9) is divided into first oxygen-starved area (101) and second oxygen-starved area (102) with described oxygen-starved area (1); Described dividing plate (9) is divided into first anaerobic zone (201) and second anaerobic zone (202) with anaerobic zone (2); Described dividing plate (9) is divided into first aerobic zone (301), second aerobic zone (302), the 3rd aerobic zone (303), the 4th aerobic zone (304) and the 5th aerobic zone (305) with described aerobic zone (3).
3. a kind of dephosphorization denitrogenation granule sludge bio-reactor as claimed in claim 2 is characterized in that: sewage water distributing pipe (6) joins with described first oxygen-starved area (101), described first anaerobic zone (201) and described first aerobic zone (301).
4. a kind of dephosphorization denitrogenation granule sludge bio-reactor as claimed in claim 3 is characterized in that: described sewage water distributing pipe (6) and described second aerobic zone (302), described the 3rd aerobic zone (303) and described the 4th aerobic zone join (304).
5. a kind of dephosphorization denitrogenation granule sludge bio-reactor as claimed in claim 2 is characterized in that: described oxygen-starved area (1), described anaerobic zone (2) and described aerobic zone (3) are respectively distinguished described web plate (5) quantity of described web plate (5) quantity of front reaction district water-carrying section setting more than each district's rear end reaction zone water-carrying section setting.
6. a kind of dephosphorization denitrogenation granule sludge bio-reactor as claimed in claim 2 is characterized in that: described web plate (5) comprises front end web plate (501) and terminal web plate (502); Described front end web plate (501) mesh is 30mm * 30mm; Described rear end web plate (502) mesh is 50mm * 50mm.
7. a kind of dephosphorization denitrogenation granule sludge bio-reactor as claimed in claim 6 is characterized in that: the water-carrying section of described first oxygen-starved area (101), described first anaerobic zone (201) and described first aerobic zone (301) is provided with described front end web plate (501); The water-carrying section of described second oxygen-starved area (102), described second anaerobic zone (202), described second aerobic zone (302), described the 3rd aerobic zone (303), described the 4th aerobic zone (304) and described the 5th aerobic zone (305) is provided with described rear end web plate (502).
8. a kind of dephosphorization denitrogenation granule sludge bio-reactor as claimed in claim 7 is characterized in that: the described front end web plate (501) that the water-carrying section of described first oxygen-starved area (101), described first anaerobic zone (201) and described first aerobic zone (301) is provided with is respectively six; The described rear end web plate (502) that the water-carrying section of described second oxygen-starved area (102), second anaerobic zone (202), described second aerobic zone (302), described the 3rd aerobic zone (303), described the 4th aerobic zone (304) and described the 5th aerobic zone (305) is provided with is respectively three.
9. as any described a kind of dephosphorization denitrogenation granule sludge bio-reactor of claim 2 to 8, it is characterized in that: described second pond (4) joins through reflux sludge tube (7) and described first oxygen-starved area (101).
10. a kind of dephosphorization denitrogenation granule sludge bio-reactor as claimed in claim 9 is characterized in that: described web plate (5) is the plastic plate that is provided with square/rhombus/Polygons mesh.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009201691891U CN201485361U (en) | 2009-08-19 | 2009-08-19 | Dephosphorizing and denitrifying granular sludge bioreactor |
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| CN2009201691891U CN201485361U (en) | 2009-08-19 | 2009-08-19 | Dephosphorizing and denitrifying granular sludge bioreactor |
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| CN201485361U true CN201485361U (en) | 2010-05-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491604A (en) * | 2012-01-05 | 2012-06-13 | 中国市政工程西北设计研究院有限公司天津分院 | Multistage anaerobic/anoxic/oxic activated sludge process |
-
2009
- 2009-08-19 CN CN2009201691891U patent/CN201485361U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491604A (en) * | 2012-01-05 | 2012-06-13 | 中国市政工程西北设计研究院有限公司天津分院 | Multistage anaerobic/anoxic/oxic activated sludge process |
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Granted publication date: 20100526 |