CN2701851Y - Diversion aeration biological filter - Google Patents
Diversion aeration biological filter Download PDFInfo
- Publication number
- CN2701851Y CN2701851Y CNU2004200336724U CN200420033672U CN2701851Y CN 2701851 Y CN2701851 Y CN 2701851Y CN U2004200336724 U CNU2004200336724 U CN U2004200336724U CN 200420033672 U CN200420033672 U CN 200420033672U CN 2701851 Y CN2701851 Y CN 2701851Y
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- Prior art keywords
- pipe
- oxidation
- conservancy diversion
- water conservancy
- filter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model provides a diversion aeration biological filter, belonging to a sewage filter. The diversion aeration biological filter is a U-shaped double-cone diversion aeration filter, the internal cone is a convection contact biologic oxidation filtering zone (11), the external cone is a biologic filtering zone (5) and a settling recirculation zone (12). Fillers (10) and filter materials (13) are arranged in the internal and external cones, the bottom of the diversion aeration biological filter is provided with a back flushing air pipe (7) and a water pipe, the fillers (10) are arranged below the convection contact biologic oxidation filtering zone (11) and the biologic filtering zone (5), and a lateral air intake pipe (6) and a vertical air intake pipe (3) are arranged below the fillers (10). A sewage water inlet pipe (2) is arranged above the convection contact biologic oxidation filtering zone (11), a water outlet pipe (4) is arranged above the biologic filtering zone (5), and a mud discharging pipe (9) is arranged below a diversion aeration biological filter shell (1). The utility model is provided with smaller filter capacity and floor area, the shock resistance loading ability is strong, the treating effect is stable, the treating process is simplified, the expenses of the engineering and the running are lower, the automation degree is high, the running and the managing are simple, the effect of removing phosphorus and nitrogen is good, the adaptability of the air temperature and the running modus is strong, and the building is modularized. The diversion aeration biological filter is favorable for expansion and suitable to the treatment of the sewage of the city.
Description
Technical field: the utility model relates to the sewage water filtration pond, particularly a kind of water conservancy diversion BAF.
Background technology: conventional activated sludge process, extended aeration process, trickling filter, oxidation ditch are generally adopted in sewage disposal in the prior art, their volumetric loading (kgBOD
5/ m
3D) be respectively 0.2-0.4,0.15-0.25,0.06,0.1-0.2, hydraulic detention time (h) be respectively 8-12,16-30, nothing,＞20, they all need establish second pond.From as can be seen above, organic loading is low on biochemical reaction unit, hydraulic detention time is long, thereby reactor volume is big, and floor space is many, needs to be provided with separately secondary sedimentation basins simultaneously, and its initial cost is big.
Summary of the invention: the purpose of this utility model is to provide a kind of water conservancy diversion biological aerated filter pond, it is bio-oxidation, biofiltration and sedimentation to be refluxed combine, realize the cycling service in filter tank by back flushing regeneration, in the secondary or tertiary treatment of sewage, embody and handle that load is high, effluent quality is good, characteristics such as small accommodation area reach effluent quality or are better than one-level treat effluent standard.
Formation of the present utility model: by housing, convection current contact bio-oxidation filtrating area, the biofiltration district, water conservancy diversion sedimentation recirculating zone, water inlet pipe, rising pipe, air feed tube, the back flushing blast main, bed of packings, training wall and shore pipe are formed, the form in water conservancy diversion biological aerated filter pond is U type bipyramid water conservancy diversion aeration filtration pond, inner cone is a convection current contact bio-oxidation filtrating area 11, outer cone is biological filtrating area 5, the bottom is water conservancy diversion sedimentation recirculating zone 12, be provided with filtrate in the interior outer cone, the filtrate bottom is provided with back flushing blast main 7 and water pipe, in convection current contact bio-oxidation filtrating area 11 and biofiltration district 5, be provided with filtrate 13, horizontal air feed tube 6 is arranged below the filtrate 13, vertical air feed tube 3 and back flushing water pipe 7, above convection current contact bio-oxidation filtrating area 11, sewage water inlet pipe 2 is arranged, rising pipe 4 is arranged above biofiltration district 5, below water conservancy diversion biological aerated filter pond housing 1, shore pipe 9 is arranged.
Convection current contact bio-oxidation filtrating area 11 contacts bio-oxidation district 11 with convection current below, toroidal training wall 8 is arranged, water conservancy diversion aeration filtration type passage is arranged between training wall 8 and biofiltration district 5 shells.
Compared with the prior art, BOD of the present utility model
5Volumetric loading is big, almost is 5～10 times that conventional two stage biological is handled, so the more conventional two stage biological treatment process of its pond and floor space is much smaller, simultaneously, owing to can not establish secondary sedimentation basins behind the preliminary filter, has saved floor space and civil engineering costs greatly.
The granular biologic packing material of high-specific surface area and rough porous in the filter tank makes it may gather the nearly microbial biomass of 10～15g/L, and the microbial biomass of high density will make the volumetric loading of BAF greatly improve, and reduce the pond and hold and floor space.
Because BAF is held back the biology of suspended substance in the sewage and is appointed, make in the water outlet SS seldom, so second pond and sludge reflux pump room need be set, treatment scheme is simplified, further save floor space.
Capacity of resisting impact load is strong, treatment effect is stable, the effluent quality of treatment system is good, be owing to exist the microorganism of higher concentration in the whole filter tank, the biological reactions rates height, and can make and have aerobic and anaerobic environment in the filter tank by the control air demand, make the filter tank combination can realize nitrated, denitrification.Simultaneously, because the microorganism of high density is fixed on the surface of particulate filter with biomembranous form, the worry of no sludge bulking can not like the impact of hydraulic load because of the filter tank and cause microorganism to run off, so water conservancy diversion aeration and biological pond all has stronger impact resistance to hydraulic load and organic loading.
Because water conservancy diversion biological aerated filter process flow process weak point, Chi Rongxiao and occupation of land economize, and make engineering cost be significantly less than conventional two stage biological treatment process.Simultaneously, adopt the special-purpose aeration dedicated system in filter tank and utilize cutting and the barrier effect of particulate filter bubble, make bubble in filtering layer further by in small, broken bits, strengthen gas, liquid mass transfer effect, increase microorganism and the time long-pending in the filtering layer with contacting of air, cause the overall oxygen-transfer efficiency in filter tank greatly to improve, the utilization ratio of oxygen reaches more than 30%, thereby saves energy consumption.
The level of automation height, operational management is simple, water conservancy diversion BAF system can carry out online detection to dissolved oxygen concentration in influent quality, the water yield and the sewage, and adjust the length of aeration time easily by the PLC Controlling System, the oxygen-supplying amount of control blower fan, be easy to optimize operation, particularly to fairly large sewage work, more apparent outstanding.
Good denitrogenation and dephosphorization effect, strong to the adaptability of temperature and operation scheme, the structures modularization helps enlarging, and water conservancy diversion BAF unit is a modular construction, can adapt to the requirement of urban wastewater treatment firm built by separate periods preferably.
Description of drawings: accompanying drawing is the utility model structural representation.
Among the figure 1, the filter tank housing, 2, sewage water inlet pipe, 3, air feed tube, 4, rising pipe, 5, the biofiltration district, 6, air feed tube, 7, the back flushing blast main, 8, training wall, 9, shore pipe, 10, filler, 11, convection current contact bio-oxidation filtrating area, 12, water conservancy diversion sedimentation recirculating zone, 13, filtrate.
Embodiment: as shown in the figure, the form of water conservancy diversion BAF is a U type bipyramid water conservancy diversion aerating filter, inner cone is a convection current contact bio-oxidation filtrating area 11, outer cone is biological filtrating area 5, be provided with filler and filtrate in the interior outer cone, filler and filtrate bottom are provided with filter back washing blast main 7 and water pipe, in convection current contact bio-oxidation filtrating area 11 and biofiltration district 5, be provided with filler 10 and filtrate 13, horizontal air feed tube 6 and vertical air feed tube 3 are arranged below filler 10 and the filtrate 13, above convection current contact bio-oxidation filtrating area 11, sewage water inlet pipe 2 is arranged, sewage enters in inner cone and the convection current contact bio-oxidation filtrating area 11 from top to bottom, air in BAF from bottom to top, convection current catalytic oxidation in the catalytic oxidation district of filler is housed, water behind the catalytic oxidation enters the outer and biofiltration district 5 of awl by toroidal training wall 8 under the guide functions of water conservancy diversion sedimentation recirculating zone.Simultaneously, air enters from filler 10 lower ends, and tortuous the rising fully contacts with the microbial film that adheres on sewage and the filtrate between the filtrate space, issues anger, liquid, solid phase reaction at aerobic condition.Because microbial film attached on the filtrate, is not limited by mud age, thereby kind is abundant, and is very favourable for the degraded of pollutent.Pollutent is adsorbed, tackles at filter material surface, and as the nutraceutical matrix of degradation bacteria, the accelerated degradation bacterium forms microbial film, and microbial film is further captured matrix again, with its assimilation, metabolism, degraded.When oxidation of coal/nitrated merging was handled, near organic contamination concentration height in the filtering layer section of filter tank water-in, the heterotrophism flora had comparative advantage, most of BOD
5Degraded at this, concentration reduces gradually.Particulate filter and microbial film are except effects such as absorption interception, have filtering effect concurrently, carrying out along with treating processes, between the filtrate space, accumulated a large amount of active sludge, these suspension active sludge have formed the mud filtering layer between the filtrate slit, the organic while in the hydrogenation degradation of sewage, also played good adsorption filtration effect, thereby can make organism and suspended substance all can obtain removing more completely.
In the operational process of filter tank, along with biomembranous metabolism, the continuous increase of the impurity of holding back on microbial film that comes off and the filtrate, head loss increases in the filtrate, and water level rises, and to the certain period, needs filtrate is carried out back flushing.The water conservancy diversion BAF is stored in water outlet limpid in the clean water basin as the recoil water with it, does not establish the recoil pond in addition, and the few waste water of recoil is back to pre-processing device by water shoot.
Rising pipe 4 is arranged above biofiltration district 5, below water conservancy diversion BAF housing 1, shore pipe 9 is arranged.
Claims (2)
1, a kind of water conservancy diversion BAF, by housing, convection current contact bio-oxidation filtrating area, the biofiltration district, the sedimentation recirculating zone, sewage water inlet pipe, rising pipe, air feed tube, the back flushing blast main, filler, filtrate, training wall and shore pipe are formed, it is characterized in that: the form of water conservancy diversion BAF is a U type bipyramid water conservancy diversion aerating filter, inner cone is a convection current contact bio-oxidation filtrating area (11), outer cone is biological filtrating area (5), the bottom is water conservancy diversion sedimentation recirculating zone (12), be provided with filtrate in the interior outer cone, the filtrate bottom is provided with back flushing blast main (7) and water pipe, at convection current contact bio-oxidation filtrating area (11), be provided with filtrate (13) in the biofiltration district (5), horizontal air feed tube (6) is arranged below the filtrate (13), vertical air feed tube (3) and back flushing water pipe (7), in convection current contact bio-oxidation filtrating area (11) top sewage water inlet pipe (2) is arranged, in biofiltration district (5) top rising pipe (4) is arranged, shore pipe (9) is arranged in the below of water conservancy diversion BAF housing (1).
2, water conservancy diversion BAF according to claim 1, it is characterized in that: contacting below, bio-oxidation district (11) with convection current at convection current contact bio-oxidation filtrating area (11) has toroidal training wall (8), between training wall (8) and biofiltration district (5) shell water conservancy diversion aeration filtration type passage is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200336724U CN2701851Y (en) | 2004-05-24 | 2004-05-24 | Diversion aeration biological filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200336724U CN2701851Y (en) | 2004-05-24 | 2004-05-24 | Diversion aeration biological filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2701851Y true CN2701851Y (en) | 2005-05-25 |
Family
ID=34772843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200336724U Expired - Fee Related CN2701851Y (en) | 2004-05-24 | 2004-05-24 | Diversion aeration biological filter |
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| Country | Link |
|---|---|
| CN (1) | CN2701851Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100513327C (en) * | 2006-06-09 | 2009-07-15 | 华南理工大学 | Laminated aerator biological filter pool and its method for pretreat light-pollution primary water |
| CN103693806A (en) * | 2013-12-06 | 2014-04-02 | 浙江大学 | Authigenic ferric salt chemical phosphorus removal-anaerobic ferrous oxidization biological denitrification integrated device |
| CN114031174A (en) * | 2021-11-22 | 2022-02-11 | 广州市水之道生态环境修复有限公司 | Solar energy circulation aeration suspension type biological filter |
| CN114180711A (en) * | 2021-12-08 | 2022-03-15 | 西安聚光环保科技有限公司 | Biochemical treatment device for high-salt-content wastewater |
-
2004
- 2004-05-24 CN CNU2004200336724U patent/CN2701851Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100513327C (en) * | 2006-06-09 | 2009-07-15 | 华南理工大学 | Laminated aerator biological filter pool and its method for pretreat light-pollution primary water |
| CN103693806A (en) * | 2013-12-06 | 2014-04-02 | 浙江大学 | Authigenic ferric salt chemical phosphorus removal-anaerobic ferrous oxidization biological denitrification integrated device |
| CN114031174A (en) * | 2021-11-22 | 2022-02-11 | 广州市水之道生态环境修复有限公司 | Solar energy circulation aeration suspension type biological filter |
| CN114180711A (en) * | 2021-12-08 | 2022-03-15 | 西安聚光环保科技有限公司 | Biochemical treatment device for high-salt-content wastewater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050525 Termination date: 20120524 |