CN201634500U - Aeration biological filter - Google Patents
Aeration biological filter Download PDFInfo
- Publication number
- CN201634500U CN201634500U CN2010201057502U CN201020105750U CN201634500U CN 201634500 U CN201634500 U CN 201634500U CN 2010201057502 U CN2010201057502 U CN 2010201057502U CN 201020105750 U CN201020105750 U CN 201020105750U CN 201634500 U CN201634500 U CN 201634500U
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- water
- tank body
- backwash
- filtrate
- 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
Abstract
The utility model discloses an aeration biological filter, which comprises a tank body, a water inlet pipeline and a water producing and water back washing pipeline, wherein the tank body is sequentially divided into a water distribution chamber, a filter material area, and a water producing and water back washing area from down to up, the water inlet pipeline is arranged on the side of the tank body and is communicated with the water distribution chamber, the water producing and water back washing pipeline is arranged on the upper part of the tank body and is communicated with the water producing and the water back washing area, the tank body adopts the combination of pulse air blast and continuous water jetting to carry out the back washing, the water distribution chamber of the tank body is internally provided with a dynamic aerator to carry out the air distribution so as to provide an air source for the back washing, the back washing efficiency can be ensured so as to improve the back washing efficiency. The utility model improves volume loading and processing efficiency of the aeration biological filter by adopting modified zeolite as the filter material.
Description
Technical field
The utility model discloses a kind of BAF, belongs to the environmental protection water-treatment technology field.
Background technology
Along with The development in society and economy and Increase of population, water resources has become the restraining factors of national economy Sustainable development.The water resources crisis that China faces is severe more, and China's water resources per capita only is 1/4th of world's per capita share, rapid development of economy, and industrial and agricultural production water and total amount of pollutants discharged constantly increase, and wastewater treatment rate is not high, has increased the weight of the natural water pollution.Therefore, improve the sewage disposal level, the waste water treating and reutilizing device that exploitation is suitable not only can reduce the pollution of sewage to physical environment, has also solved present water scarcity problem.
BAF (BAF) is a kind of sewage treatment technique of the later development 1980s, and essence is a kind of biomembrance process, i.e. filled biomass filler in the aeration tank utilizes the processing unit of the microbial film degraded water pollutant that filling surface adheres to.Since selected filler self, the easy attached biological film of filling surface.The microorganism of numerous kinds and the quantity of growing in the microbial film has aerobic bacteria, and hold concurrently oxygen bacterium, anerobe so BAF all has a good effect of removing to the various organism in the water, also have very high removal efficient to ammonia nitrogen simultaneously.But existing BAF, its production cost is generally higher, and effluent quality is poor, and the back flushing in filter tank adopts single mode, defective such as especially backwash effect is poorer under the little situation of water consumption, air consumption.
Summary of the invention
At the deficiencies in the prior art, the utility model provides a kind of low cost, high efficiency BAF wastewater treatment equipment by improving aeration, backwash technology, adopting novel filtrate, makes product water satisfy the reuse requirement.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of BAF, comprise tank body, inlet channel and product water and backwash water pipeline, wherein: described tank body is divided into distributing water room, filtrate district from the bottom up successively, produces water and backwash pool, inlet channel be arranged at tank body side and and communicate with distributing water room, product water and backwash water pipeline are arranged at the top of tank body and communicate with producing water and backwash pool, and it is that pulse gas dashes and the mode of the combination that continuous water dashes is carried out back flushing that described tank body adopts.
Further, the spiral aerator being installed in the distributing water room of described tank body carries out gas distribution and provides source of the gas for the tank body back flushing.
Further, described spiral aerator is that the boring aeration pipeline on same horizontal plane is formed, and has adopted macropore exhaust bubble gas distribution, and gas promotes the aerator rotation, make gas carry out dextrorotation and derotation water conservancy diversion, the dextrorotation water conservancy diversion is a clockwise direction, and the derotation water conservancy diversion is counterclockwise, under two different directions cyclonic action, what evenly gather upwards produces bubble, the rotation of spiral aerator simultaneously also makes the water body of rising produce water turbulence, and filter material surface is had good scouring effect.
Further, described tank body back flushing is to adopt the operated pneumatic valve on the full-automatic PLC control pipeline to open and close automatically, and the opening and closing time is identical, and valve opening and the cycle of closing are 30～60s, reach the purpose of pulse air feed backwash, and the backwash time is 5min.
Further, back flushing inlet channel and blow-off line are installed also in the distributing water room of described tank body, when BAF needs repairing, can be opened blow-off line, the water body in the venting tank body is convenient to maintenance.
Further, described filtrate is distinguished into two-layer, and lower floor is a pebble bed, the upper strata is the modified zeolite filter material layer, and through high temperature modified and salt modification, the modified zeolite particle diameter is 4～5mm to above-mentioned modified zeolite filtrate by natural zeolite, the modified zeolite particle diameter is 4～5mm, and density is 2000～2200kg/m
3
Further, be separated by by filter plate between described distributing water room and the filtrate district, and on the filter plate filter be installed evenly, the water body in the distributing water room evenly enters in the filtrate district through filter; The filtrate district is separated by the pore filter with product water and backwash pool, leaves certain space between filter and modified zeolite filtrate, and filtrate expands and uses during for backwash, and above-mentioned spatial volume accounts for 10～15% of filtrate district volume.
Further, be equipped with in described product water and the backwash pool and produce water, backwash water collecting chamber, they are separated by by stabilier, and enter collecting chamber through tilted plate separator, and tilted plate separator can also precipitate the filtrate by filter.
Further, aerating system is installed in the pebble bed in described filtrate district, this aerating system comprises aerator and aerated conduit, wherein aerator is a micro-hole aerator, and the bubble diameter of generation is 0.1～0.2mm, and gas, liquid contact area are big, the coefficient of oxygen utilization height generally can reach 20～25%.
Described tank body is a vertical vessel, and the upper end is opening or dead front type.
Innovative point of the present utility model mainly contains:
1) the utility model is compared with traditional BAF, adopts modified zeolite to do filtrate, and zeolite has the porosity height, advantages such as specific surface area is big, low price.Natural zeolite is owing to exist some impurity of water molecules and other in the molecule duct, so its exchange capacity is too low, and zeolite is through after the modification, and the adsorptive power of ammonia nitrogen, phosphorus etc. strengthens, and has improved the volumetric loading and the treatment effect of BAF greatly.
2) back flushing adopts spiral aeration process and pulse gas to dash the mode of the combination of dashing with continuous water, recoil air-flow moment of certain intensity enters filtering layer and solid stream of water makes filtering layer be in the speed change swelling state jointly, microbial film and impurity come off under intensive shearing, impact effect fast, after the moment air-flow pulse, the stable gradually and sedimentation when the expansion filtering layer, open gas when not reaching dense state as yet once more, so filtering layer begins violent change of state of another cycle again.Wherein current play the result of the effect frequent operation of even recoil and rinsing filtering layer all the time and have strengthened the recoil process, thereby under the little situation of water consumption, air consumption, have guaranteed that higher backwash efficiency has improved backwash effect greatly.
3) system is the vertical tank body structure, and modular combination can be done best elasticity combination according to place of production size and treatment capacity.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Embodiment: structure as shown in Figure 1, the utility model equipment is a vertical tank body structure, comprise 1. inlet channels, 2. distributing water room, 3. blow-off line, 4. the back flushing aerated conduit, 5. aerated conduit, 6. micro-hole aerator, 7. pebble bed, 8. the modified zeolite filter material layer, 9. micro-strainer, 10. produce water/backwash water collecting chamber, 11. stabiliers, 12. tilted plate separators, 13. water producing pipe roads, 14. backwash water pipelines, 15. filter plates, 16. filters, 17. spiral aerators, 18. backwash water inlet channels.
As shown in Figure 1: during sewage disposal, the sewage that needs to handle enters in the distributing water room 2 by inlet channel 1, sewage enters the pebble bed 7 in filtrate district by each filter 16 on the filter plate 15, enter in the modified zeolite filtrate in the modified zeolite filter material layer 8, modified zeolite is with ammonia nitrogen in the sewage, suspended substance, after the absorption such as bacterium, produce water and enter product water/backwash pool by micro-strainer 9, enter again in product water/backwash water collecting chamber 10, handle by water producing pipe road 13 at last, discharging or reuse, produce water/backwash water collecting chamber stabilier 11 and be separated by, and enter collecting chamber through tilted plate separator 12, tilted plate separator can also precipitate the filtrate by filter
As shown in Figure 1: aerated conduit 5 is arranged in cobble district, filter material layer below, carry out micro-pore aeration by micro-hole aerator 6, improve dissolved oxygen content in the water body, satisfy the demand of microbial film aerobic bacteria on the modified zeolite surface, the filtrate of tank body is distinguished into two-layer, lower floor is a pebble bed 7, and the upper strata is a modified zeolite filter material layer 8.Described modified zeolite filtrate is formed by the natural zeolite modification, and the preparation method of modified zeolite filtrate is the high temperature modified and salt modification of zeolite process.Concrete method of modifying is: natural zeolite through 400～500 ℃ of high temperature, after 1～2h modification, is used 0.5～1.0mol/L salt solution again, soak 3～5h, promptly obtain modified zeolite.The modified zeolite particle diameter is 4～5mm, and density is 2000～2200kg/m
3, modified zeolite has advantages such as specific surface area is big, advantages of good adsorption effect.
As shown in Figure 1, when the needs backwash, close inlet channel 1, open backwash water inlet channel 18 simultaneously, its current are identical during with works better through route, but big when flow velocity is more normally worked; Close aerated conduit 5 simultaneously, open back flushing aerated conduit 4 and spiral aerator 17 in the distributing water room 2, carry out the backwash of spiral aeration, the while cleaning way, employing is the mode that pulse gas dashes the combination of dashing with continuous water, strengthens the effect of back flushing.Control mode is to adopt the operated pneumatic valve on the full-automatic PLC control pipeline to open and close automatically, the opening and closing time is identical, and valve opening and the cycle of closing are 30～60s, reach the purpose of pulse air feed backwash, the backwash time is 5min, and backwash water is got rid of through backwash water water producing pipe road 14.
As shown in Figure 1: when BAF needs repairing, can open blow-off line 3, the water in the venting tank body is convenient to maintenance.
The utlity model has following useful effect:
1) adopts steps such as the operation of PLC full automatic control, back flushing, reduce running cost.
2) effluent quality is good, can remove suspended substance, COD, bacterium and most ammonia-nitrogen in the sewage.
3) anti-shock loading is strong, the expanded problem of no mud.
Tolerance to environmental variation is strong.
The above record only for utilizing the embodiment of this origination techniques content, anyly is familiar with modification, the variation that this skill person uses this creation to do to do, and all belongs to the claim of this creation opinion, and is not limited to those disclosed embodiments.
Claims (10)
1. BAF, comprise tank body, inlet channel and product water and backwash water pipeline, it is characterized in that: up be divided into distributing water room, filtrate district under the described tank body successively, produce water and backwash pool, inlet channel be arranged at tank body side and and communicate with distributing water room, product water and backwash water pipeline are arranged at the top of tank body and communicate with producing water and backwash pool, and it is that pulse gas dashes and the mode of the combination that continuous water dashes is carried out back flushing that described tank body adopts.
2. a kind of BAF according to claim 1 is characterized in that: installation spiral aerator carries out gas distribution in the distributing water room of described tank body provides source of the gas for the tank body back flushing.
3. a kind of BAF according to claim 2, it is characterized in that: described spiral aerator is formed for the boring aeration pipeline on same horizontal plane, aerated conduit is provided with macropore exhaust bubble gas distribution, above-mentioned aerator rotation makes gas carry out dextrorotation and derotation water conservancy diversion, the dextrorotation water conservancy diversion is a clockwise direction, the derotation water conservancy diversion is counterclockwise, what make under two different directions cyclonic action that aerated conduit evenly gathers upwards produces bubble, and the rotation of spiral aerator simultaneously makes the water body of rising produce water turbulence.
4. a kind of BAF according to claim 1, it is characterized in that: described tank body back flushing is to adopt the operated pneumatic valve on the full-automatic PLC control pipeline to open and close automatically, the opening and closing time is identical, valve opening and the cycle of closing are 30～60s, reach the purpose of pulse air feed backwash, the backwash time is 5min.
5. a kind of BAF according to claim 1 is characterized in that: back flushing inlet channel and blow-off line also are installed in the distributing water room of described tank body.
6. a kind of BAF according to claim 1, it is characterized in that: described filtrate is distinguished into two-layer, lower floor is a pebble bed, the upper strata is the modified zeolite filter material layer, above-mentioned modified zeolite filtrate is by the high temperature modified and salt modification of natural zeolite process, the modified zeolite particle diameter is 4～5mm, and the modified zeolite particle diameter is 4～5mm, and density is 2000～2200kg/m
3
7. a kind of BAF according to claim 1 is characterized in that: be separated by by filter plate between described distributing water room and the filtrate district, and on the filter plate filter be installed evenly, the water body in the distributing water room evenly enters in the filtrate district through filter; The filtrate district is separated by the pore filter with product water and backwash pool, leaves certain space between filter and modified zeolite filtrate, and spatial volume accounts for 10～15% of filtrate district volume.
8. a kind of BAF according to claim 7, it is characterized in that: be equipped with in described product water and the backwash pool and produce water, backwash water collecting chamber, they are separated by by stabilier, and enter collecting chamber through tilted plate separator, and tilted plate separator can also precipitate the filtrate by filter.
9. according to claim 1 or 6 described a kind of BAF, it is characterized in that: aerating system is installed in the pebble bed in described filtrate district, this aerating system comprises aerator and aerated conduit, and wherein aerator is a micro-hole aerator, and the bubble diameter of generation is 0.1～0.2mm.
10. a kind of BAF according to claim 1 is characterized in that: described tank body is a vertical vessel, and the upper end is opening or dead front type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201057502U CN201634500U (en) | 2010-01-25 | 2010-01-25 | Aeration biological filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201057502U CN201634500U (en) | 2010-01-25 | 2010-01-25 | Aeration biological filter |
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| CN201634500U true CN201634500U (en) | 2010-11-17 |
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| CN2010201057502U Expired - Fee Related CN201634500U (en) | 2010-01-25 | 2010-01-25 | Aeration biological filter |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984571A (en) * | 2015-07-13 | 2015-10-21 | 江苏德立环保工程有限公司 | Efficient purification filter for wastewater of metallurgical industry |
| CN105254001A (en) * | 2015-10-21 | 2016-01-20 | 轻工业环境保护研究所 | Aerobic reactor provided with filter material on bottom layer |
| CN109019836A (en) * | 2018-08-10 | 2018-12-18 | 白玉梅 | A kind of biological aerated filter and its processing method of sewage treatment |
| CN109368768A (en) * | 2018-11-21 | 2019-02-22 | 江南大学 | A kind of Method of blockage removal of rainwater bio-slow sand filtration |
| CN109867403A (en) * | 2017-12-01 | 2019-06-11 | 中国水利水电科学研究院 | A kind of processing unit and sewage water treatment method of dispersing type sewage |
| CN110627199A (en) * | 2018-06-25 | 2019-12-31 | 光大水务科技发展（南京）有限公司 | Method for intelligently controlling backwashing strength of biological aerated filter |
| CN111437636A (en) * | 2020-04-09 | 2020-07-24 | 杭州鼎辉环保科技有限公司 | SS multilayer mixed flow precipitation device and precipitation method thereof |
| CN111646566A (en) * | 2020-06-12 | 2020-09-11 | 浙江埃克钛环境科技有限公司 | High-efficient biological denitrogenation equipment of river course water |
-
2010
- 2010-01-25 CN CN2010201057502U patent/CN201634500U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984571A (en) * | 2015-07-13 | 2015-10-21 | 江苏德立环保工程有限公司 | Efficient purification filter for wastewater of metallurgical industry |
| CN105254001A (en) * | 2015-10-21 | 2016-01-20 | 轻工业环境保护研究所 | Aerobic reactor provided with filter material on bottom layer |
| CN109867403A (en) * | 2017-12-01 | 2019-06-11 | 中国水利水电科学研究院 | A kind of processing unit and sewage water treatment method of dispersing type sewage |
| CN109867403B (en) * | 2017-12-01 | 2023-09-22 | 中国水利水电科学研究院 | Decentralized sewage treatment device and sewage treatment method |
| CN110627199A (en) * | 2018-06-25 | 2019-12-31 | 光大水务科技发展（南京）有限公司 | Method for intelligently controlling backwashing strength of biological aerated filter |
| CN109019836A (en) * | 2018-08-10 | 2018-12-18 | 白玉梅 | A kind of biological aerated filter and its processing method of sewage treatment |
| CN109368768A (en) * | 2018-11-21 | 2019-02-22 | 江南大学 | A kind of Method of blockage removal of rainwater bio-slow sand filtration |
| CN111437636A (en) * | 2020-04-09 | 2020-07-24 | 杭州鼎辉环保科技有限公司 | SS multilayer mixed flow precipitation device and precipitation method thereof |
| CN111646566A (en) * | 2020-06-12 | 2020-09-11 | 浙江埃克钛环境科技有限公司 | High-efficient biological denitrogenation equipment of river course water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20130125 |