CN2568636Y - Contact oxidation biological filter cell adapting suspension filtering material - Google Patents
Contact oxidation biological filter cell adapting suspension filtering material Download PDFInfo
- Publication number
- CN2568636Y CN2568636Y CN02264243U CN02264243U CN2568636Y CN 2568636 Y CN2568636 Y CN 2568636Y CN 02264243 U CN02264243 U CN 02264243U CN 02264243 U CN02264243 U CN 02264243U CN 2568636 Y CN2568636 Y CN 2568636Y
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- CN
- China
- Prior art keywords
- water
- filter
- material layer
- water inlet
- filter material
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- 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.)
- Expired - Lifetime
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Classifications
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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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses a contact oxidation biological filter pond, adopting suspension filtering material as microorganism carrier. The utility model has the essential structure that a water inlet distributing zone 1 is positioned at the bottom of a pond body, a suspension filtering material layer 2 is positioned at the middle part of the filter pond, a water outlet zone 3 is positioned on the upper part of the pond body, and a water inlet pipe 7, a sewage water inlet distributing channel 14 with a distributing hole board 13, a backflushing air pipe 12 and a backflushing water outlet pipe 15 are arranged at the bottom of the water inlet distributing zone 1. A filtering board 6 is arranged on the lower part of the water outlet zone 3 and the upper part of the suspension filtering material layer 2, an air aeration pipe 8 is arranged in the suspension filtering material layer 2, and a water outlet channel 4, a water outlet pipe 11, a water refluxing pipe 9 and a water refluxing pump 10 are arranged at the side of the water outlet zone 3. The contact oxidation filter pond has the characteristics of high efficiency of sewerage purifying and good water treatment quality of effluent water. The utility model not only removes the organic pollutant, but also has the function of removing nitrogen in the nitrifying and denitrifying method, and the backflushing is convenient.
Description
Technical field
The utility model relates to a kind of catalytic oxidation biological filter that is used for sewage disposal of adopting suspended filter material as microbe carrier.
Background technology
In existing contact oxidation pond, microorganism carrier generally adopts elastic filler, this filler is bundled into rectangular pencil and vertical hanging, is fixed in the reaction tank by the plastics silk, and in operational process, the microorganism on the filler is to the organic pollutant biodegrade in the sewage.Because the specific surface area of rectangular pencil filler is less, the microbial biomass that adheres to is just few, and general microorganism concn is at 4～6g/m in the filler
3Filler, because microbial biomass is few, so cause the unit volume filler less than normal to organic degraded load, general organic degraded load is 1～3kgBOD
5/ m
3Filler d; Because the specific surface area of rectangular pencil filler is less, its specific surface area generally has only 300～500m
2/ m
3Filler, the microbial biomass that adheres on it are just few, and microorganism so in the process of aeration oxygen supply in the pond, the contact area of air filled cavity and microbial film is little, causes the utilization ratio of oxygen not high all with membranaceous growth; Simultaneously, because the space between rectangular pencil filler is very big, filler does not have crown_interception to the aging microbial film that comes off in the operational process and the suspended substance in the raw waste water, carries out solid-liquid separation so must secondary sedimentation basins be set behind the contact oxidation pond; In addition, the aeration oxygen supply is carried out in the existing contact oxidation pond all water distributing area below packing layer, make the microorganism that grows on the whole packing layer be the oxygen animalcule of having a liking for of existence under the aerobic environment, only have the organic function of carbonization in the degradation of sewage, have the denitrification microorganism of only under anaerobism, anaerobic environment, surviving of nutritive substance such as ammonia nitrogen in the degradation of sewage and can not grow.
In existing BAF, microorganism carrier generally adopts circular ceramic grain filter, and this kind haydite is heavier, and its proportion is generally at 2～2.5t/m
3About, so in this kind filter tank, circular ceramic grain filter must be piled and fill out on the support filter plate of middle and lower part, filter tank, support the huge weight and the operating hydraulic pressure of circular ceramic grain filter by the support filter plate, make that the engineering structure of filter body is complicated, construction investment is also big; Simultaneously since the height of circular ceramic grain filter in the filter tank generally all about 4m, reach effect preferably so when back flushing is carried out in the filter tank, must adopt combined water and air backwash that filter bed is become flexible, so just the back flushing strainer head must be installed on filter plate, simultaneously must there be fixed backwash pump and back flushing gas blower to guarantee the supply at source of the gas and water source, and the backwashing procedures complexity, thereby construction investment, operation easier and working cost have been increased greatly; In addition in operational process, provide the aerator of oxygen source and back flushing to be installed in the high circular ceramic grain filter layer bottom of 4m to the filter tank with strainer head, material generally is plastics and rubber, be subjected to the heap pressure of filtrate also owing to aging being easier to of self damaged for a long time, in case damage then almost can't overhaul and change, unless all filtrates are moved to outside the filter tank just can carry out, and will cause bigger maintenance workload like this, can make the filter tank out of service for a long time simultaneously; Filtrate is in the process of clearing to the filter tank in addition, microorganism on the filtrate can come off in a large number, and the microorganism that moves on the filtrate outside the filter tank within a short period of time also can be dead, so in maintenance, change ceramic grain filter to be returned after finishing and normally to move after putting into the filter tank and reach treatment effect at once, must cultivate again and tame to microorganism.
Summary of the invention
The purpose of this utility model is to solve the defective that existing contact oxidation pond and BAF exist, provide that a kind of unit volume filler is big to organic degraded load, the utilization ratio height of oxygen, do not need to be provided with that secondary sedimentation basins carries out solid-liquid separation, back flushing is convenient, pond body engineering structure is simple, filter and the aerating system maintenance is convenient, not only had the organic pollutant in the degradation of sewage but also have in the degradation of sewage nutritive substance and the significant catalytic oxidation of wastewater treatment efficiency biological filter such as ammonia nitrogen.
For achieving the above object, catalytic oxidation of the present utility model biological filter is rectangular parallelepiped or cylinder, is made up of water inlet water distributing area, suspended filter material layer, the exhalant region and the water channel that goes out that is positioned at the exhalant region outside.The water distributing area of wherein intaking is positioned at body bottom, pond, and the suspended filter material layer is positioned at body middle part, pond, and exhalant region is positioned at body top, pond; Be provided with sewage water inlet pipe in water inlet water distributing area bottom and water inlet distributes canal, this distributes canal double as blowdown canal when filter back washing, and with back flushing time institute sewer by the blowdown canal compile the back with row of conduits to the pond; In the suspended filter material layer aerated conduit is installed, the microorganism when moving in the filter tank on filtrate provides oxygen; Also be provided with the back flushing blast main in water inlet water distributing area bottom; Be provided with the filter plate that prevents the filtrate come-up and overcome filtrate buoyancy in the bottom of exhalant region and the top of suspended filter material layer, being equipped with on the filter plate can be from the filter of the disassembly, cleaning of filter plate top, replacing.
In such structure because adopted that specific surface area is big, particle diameter is little, proportion is less than the circular particulate filter of the suspension of water, makes that the filtrate area for attached growth of microorganisms increases greatly in the whole filter material layer, its specific surface area is up to 3000～4500m
2/ m
3Filtrate, thereby make the microbial biomass that is grown in filter material surface also increase greatly, the microorganism concn in the filter material layer is up to 10～15g/m
3Filtrate, so high microorganism concn makes that the degradable organic pollutant amount of unit volume filtrate improves greatly in the operational process, the degraded load of organic pollutant can reach 5～8kgBOD
5/ m
3Filtrate, when handling the sewage of a certain amount of equal pollution level, required pond holds and the filtrate amount significantly reduces; Aeration tube is when work, its air filled cavity that discharges is constantly cut by circular, the less suspended filter material of diameter in the uphill process in the filter tank, thereby produce a large amount of small bubbles, contact area of bubble and microorganism and duration of contact are increased greatly, so improved the utilization ratio of oxygen; Because the water inlet water distributing area is positioned at body bottom, pond, sewage and air from bottom to top during the long suspended filter material layer that microbial film arranged of concurrent like this, filter material layer is held back suspended matter in the sewage and the microbial film that comes off, plays the effect of biofiltration; In this filter tank structure, the position of aeration tube can be arranged on the different heights place in the suspended filter material layer as required, makes with the aeration tube to be the boundary, the bottom is the oxygen-starved area, top is aerobic zone, thereby plays the function that both has degradable organic pollutant, has the nitrification and denitrification denitrification functions simultaneously again; In such structure, because filter plate is positioned at the top of filter material layer, filter plate top is clear water zone, thus when filter stops up or damage, can directly change filter from filter plate top, very convenient; Again because aeration adopts the stainless steel perforated pipe, thus not fragile, so generally need not overhaul, if in the time of must overhauling, as long as slowly draining is to reduce the water level in the filter tank, the end face of suspended filter material layer is reduced along with water level and descend, when exposing from filter material layer, can overhaul aeration tube.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the utility model catalytic oxidation biological filter.
Embodiment
What catalytic oxidation biological filter shown in Figure 1 comprised into water water distributing area 1, suspended filter material layer 2, exhalant region 3 and was positioned at the exhalant region side goes out parts such as water channel 4, and the pond body is rectangular parallelepiped or cylinder.When the pond body was cylinder, effluent trough 4 was and the body concentric right cylinder in pond that its bottom is provided with rising pipe 11; When the pond body was rectangular parallelepiped, effluent trough 4 was for being positioned at the rectangle tank of body both sides, pond as symmetric line with the pool center line.The sewage water inlet that is provided with band distributing pore plate 13 in water inlet water distributing area 1 bottom distributes canal 14, and also as back flushing draining usefulness, this canal links to each other with back flushing water shoot 15 with water inlet pipe 7 respectively by pipeline this canal when filter back washing; If when processing requirement was removed the ammonia nitrogen in the sewage, this canal also linked to each other with backflow water pump 10 with backflow water pipe 9; Also be provided with back flushing blast main 12 in water inlet water distributing area 1 bottom.Be provided with filter plate 6 in the bottom of exhalant region 3 and the top of suspended filter material layer 2, filter plate 6 is provided with can be from the filter 5 of filter plate top disassembly, cleaning, and the effect of this filter is to prevent that suspended filter material is in operation with the water outflow filter tank after purifying.Be provided with aeration tube 8 in suspended filter material layer 2, the position of aeration tube 8 in the suspended filter material layer can be calculated according to filter tank water-in and water-out water quality requirement and be determined.This catalytic oxidation biological filter has the high and good characteristics of treat effluent water quality of the efficient of purifying waste water, and not only can remove organic pollutant, also have nitrated-denitrifying denitrification functions simultaneously, and back flushing is convenient.
Like this, when moving in the catalytic oxidation biological filter, treatment sewage flows into water inlet by sewage water inlet pipe 7 and backflow water pipe 9 respectively with the filter tank recirculation water and distributes canal 14 after mixing, and distributes the distributing pore plate 13 at canal 14 tops evenly to flow into water inlet water distributing area 1 by water inlet.The sewage that enters water distributing area 1 is subjected to stopping of suspended filter material layer 2 and rises behind 2 times uniform distribution of suspended filter material layer by suspended filter material layer 2 in uphill process, aeration tube 8 in the suspended filter material layer 2 is the filter material layer separated into two parts, and top is aerobic zone and the bottom is the oxygen-starved area.At first flow through the oxygen-starved area in the sewage uphill process, dominant growth has denitrifying bacteria on the suspended filter material of oxygen-starved area, this microorganism utilize organism in the water inlet as carbon source with the NO in the sewage
3 --N is converted into N
2, realize denitrification denitrogenation; Sewage promptly enters aerobic zone after flowing out from the oxygen-starved area, dominant growth has the oxygen of having a liking for bacterium and nitrifier on the aerobic zone suspended filter material, have a liking for oxygen bacterium and nitrifier utilize the oxygen that generates in airborne oxygen that aeration tube 8 provides and the denitrification denitrogenation process come in the degradation of sewage respectively organic carbonization pollutent and with NH
3-N is converted into NO
3 --N, thus sewage is purified.After for some time is moved in the filter tank, along with thicken on the filtrate microbial film come off and the SS that holds back in the filter tank constantly increases, cause the resistance of filter material layer to increase, must close water inlet pipe 7 this moment, the valve of backflow water pipe 9 and aeration tube 8, and open the valve of back flushing water shoot 15, open back flushing blast main 12 simultaneously, utilize the following filter material layer that when flowing and under the stirring of back flushing air, making works better, is compressed state of purifying waste water that stores in the exhalant region 3 to expand downwards, and make filtrate under the dual function that rubs mutually between fluid scouring and filtering material particle, the microbial film that comes off separates with filtrate with the SS that is trapped, and discharges outside the filter tank with the back flushing draining.
Example: at planar dimension is 9000 * 5000mm, highly be in the square catalytic oxidation biological filter of 7000mm, be filled with highly and be the circular suspended filter material of 3000mm, the filter plate at filter material layer top apart from the pond apex distance from being 1600mm, filter material layer bottom 2400mm at the bottom of the pond, aeration tube are installed in spacing filter material layer bottom 1200mm in the filter material layer and apart from 1800mm place, filter material layer top.Work as BOD
5Volumetric loading is 4.8kg/m
3D, NH
3-N volumetric loading is 0.8kg/m
3D, reflux ratio are 60%, the aeration gas-water ratio is 5.7: 1 o'clock, and this equipment can be with 3000m
3The BOD of/d sanitary sewage
5Reduce to 10mg/l from 145mg/l, with NH
3-N reduces to 2mg/l from 28mg/l, with NH
3-N reduces to 10mg/l from 45mg/l.
Claims (4)
1, a kind of catalytic oxidation biological filter of adopting suspended filter material, by water inlet water distributing area (1), suspended filter material layer (2), exhalant region (3) and be positioned at the external water channel (4) that goes out in pond and form in exhalant region (3) outside, the pond body is rectangular parallelepiped or cylinder, it is characterized in that: described water inlet water distributing area (1) is positioned at body bottom, pond, suspended filter material layer (2) is positioned at body middle and upper part, pond, and exhalant region (3) is positioned at body top, pond; Being provided with in water inlet water distributing area (1) bottom, water distributes canal (14), water inlet distributes canal (14) also to use as the back flushing discharge channel, water inlet pipe (7), backflow water pipe (9), back flushing water shoot (15) distribute canal (14) to link to each other by pipeline and water inlet respectively, also are provided with back flushing blast main (12) in water inlet water distributing area (1) middle and lower part; The middle and lower part is provided with aeration tube (8) in suspended filter material layer (2), and suspended filter material layer (2) top is provided with filter plate (6); Go out water channel (4) bottom and be provided with rising pipe (11); Sewage enters into water water distributing area (1) by water inlet pipe (7) after water inlet distributes canal (14), evenly upwards flow through the oxygen-starved area and the aerobic zone of suspended filter material layer (2) then, purify waste water and enter out water channel (4) through exhalant region (3), flowed out and partial reflux by rising pipe (11) then, partial reflux water reenters the filter tank by backflow water pump (10) pressurization and through backflow water pipe (9).
2, catalytic oxidation according to claim 1 biological filter is characterized in that: adopted in suspended filter material layer (2) that specific surface area is big, particle diameter is little, proportion is less than the circular particulate filter of the suspension of water, its specific surface area is up to 3000～4500m
2/ m
3
3, catalytic oxidation according to claim 1 biological filter, it is characterized in that: be equipped with on the described filter plate (6) can exhalant region (3) carries out disassembly, cleaning above filter plate filter (5), the water filtering cap of filter (5) is arranged in and stretches into suspended filter material layer (2) under the filter plate.
4, biological filter according to claim 1, it is characterized in that: described aeration tube (8) is positioned at suspended filter material layer (2) middle part, and the position of aeration tube (8) in suspended filter material layer (2) can be calculated according to draining water quality after sewage influent quality and the desired processing and be determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02264243U CN2568636Y (en) | 2002-09-10 | 2002-09-10 | Contact oxidation biological filter cell adapting suspension filtering material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02264243U CN2568636Y (en) | 2002-09-10 | 2002-09-10 | Contact oxidation biological filter cell adapting suspension filtering material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2568636Y true CN2568636Y (en) | 2003-08-27 |
Family
ID=33730482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02264243U Expired - Lifetime CN2568636Y (en) | 2002-09-10 | 2002-09-10 | Contact oxidation biological filter cell adapting suspension filtering material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2568636Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300019C (en) * | 2004-04-05 | 2007-02-14 | 甄建伟 | River way type sewage treatment system |
| CN101152609B (en) * | 2006-09-25 | 2010-09-08 | 北京科净源科技股份有限公司 | Float bed filter |
| CN102489033A (en) * | 2011-11-18 | 2012-06-13 | 大连得达科技发展有限公司 | Denitrification upward flowing type biofilter |
| CN106045011A (en) * | 2016-08-15 | 2016-10-26 | 江苏裕隆环保有限公司 | Improved intercepting apparatus for suspended filler |
| CN106630423A (en) * | 2016-12-23 | 2017-05-10 | 净化控股集团股份有限公司 | Integrated modularization sewage treatment plant |
| CN111298488A (en) * | 2020-03-26 | 2020-06-19 | 黄河勘测规划设计研究院有限公司 | Suspension filtration system convenient to arrange mud |
| CN113354086A (en) * | 2021-06-03 | 2021-09-07 | 北京首创股份有限公司 | Biological aerated filter capable of realizing multi-mode operation and control method thereof |
| CN114349155A (en) * | 2022-01-27 | 2022-04-15 | 苏州市苏创环境科技发展有限公司 | Biological filter equipment and backwashing process thereof |
-
2002
- 2002-09-10 CN CN02264243U patent/CN2568636Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300019C (en) * | 2004-04-05 | 2007-02-14 | 甄建伟 | River way type sewage treatment system |
| CN101152609B (en) * | 2006-09-25 | 2010-09-08 | 北京科净源科技股份有限公司 | Float bed filter |
| CN102489033A (en) * | 2011-11-18 | 2012-06-13 | 大连得达科技发展有限公司 | Denitrification upward flowing type biofilter |
| CN106045011A (en) * | 2016-08-15 | 2016-10-26 | 江苏裕隆环保有限公司 | Improved intercepting apparatus for suspended filler |
| CN106630423A (en) * | 2016-12-23 | 2017-05-10 | 净化控股集团股份有限公司 | Integrated modularization sewage treatment plant |
| CN111298488A (en) * | 2020-03-26 | 2020-06-19 | 黄河勘测规划设计研究院有限公司 | Suspension filtration system convenient to arrange mud |
| CN113354086A (en) * | 2021-06-03 | 2021-09-07 | 北京首创股份有限公司 | Biological aerated filter capable of realizing multi-mode operation and control method thereof |
| CN114349155A (en) * | 2022-01-27 | 2022-04-15 | 苏州市苏创环境科技发展有限公司 | Biological filter equipment and backwashing process thereof |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120910 Granted publication date: 20030827 |