CN102557244B - Biological aerated filter - Google Patents
Biological aerated filter Download PDFInfo
- Publication number
- CN102557244B CN102557244B CN201010603136.3A CN201010603136A CN102557244B CN 102557244 B CN102557244 B CN 102557244B CN 201010603136 A CN201010603136 A CN 201010603136A CN 102557244 B CN102557244 B CN 102557244B
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- Prior art keywords
- inlet pipe
- water
- water inlet
- zone
- distributing area
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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 invention discloses a biological aerated filter. The biological aerated filter is divided into a water distribution zone and a water inlet zone, wherein the water distribution zone and the water inlet zone are arranged at intervals by virtue of a partition plate; the bottom of the water distribution zone is provided with an aeration pipe, and the aeration pipe releases oxygen to the water distribution zone; the partition plate is provided with a filter head which causes the water distribution zone and the water inlet zone to be communicated; the water inlet zone is also connected with a backwash water inlet pipe and a backwash air inlet pipe, and the backwash water inlet pipe and the backwash air inlet pipe are respectively used for water injection and air injection on the water inlet zone by virtue of valves; and a branch pipeline is arranged between the backwash water inlet pipe and the valves of the backwash water inlet pipe, and the branch pipeline is also provided with a sludge discharge pump. By applying the technical scheme of the invention, complete biological treatment can be completely achieved in one biological aerated filter while no secondary sedimentation tank used for sludge sedimentation is required to be arranged downstream; meanwhile, valves of the backwash water inlet pipe and the valves of the backwash air inlet pipe are closed, the sludge discharge pump is started, sludge gathered at the water distribution zone is reversely and forcibly discharged, then backwashing is carried out, time of the backwashing is shortened, and water yield is increased.
Description
Technical field
The present invention relates to a kind of BAF.
Background technology
BAF is called for short BAF, is a kind of New biological membrane method sewage treatment process growing up America and Europe the end of the eighties, and this technique has the effect of removing SS, COD, BOD, nitrated, denitrogenation, dephosphorization, removal AOX (objectionable impurities).BAF collection bio-oxidation and hold back suspended solids one, has saved post precipitation pond (second pond), has volumetric loading, hydraulic load is large, hydraulic detention time is short, required initial cost is few, and effluent quality is good: operation energy consumption is low, the feature that working cost is few.Yet BAF of the prior art is when operation, water inlet reduces sharply at water distributing area flow velocity, causes the large quantity set mud in water distributing area, and when BAF back flushing, it is floating that collection mud is backwashed water punching, causes backwash overlong time.Affect effluent quality, make to process the water yield and reduce in a large number, therefore, need a kind of BAF that can get rid of water distributing area collection mud.
Summary of the invention
The embodiment of the present invention, for collection mud problem in BAF water distributing area in above-mentioned prior art, provides a kind of BAF, and this invention concrete grammar is as follows:
Described BAF is divided into and is positioned at the water distributing area of described BAF space top and the inhalant region of below, described water distributing area, and described water distributing area and inhalant region are set in distance by dividing plate;
Bottom, described water distributing area is provided with aerating pipe, and described aerating pipe is to water distributing area releasing oxygen;
Described dividing plate is provided with the filter that water distributing area and inhalant region are communicated with;
Described inhalant region is also connected with back flushing water inlet pipe and back flushing inlet pipe, and described back flushing water inlet pipe and back flushing inlet pipe are controlled the water filling of inhalant region and gas injection by valve respectively;
Between back flushing water inlet pipe and the valve of back flushing water inlet pipe, be also provided with branch line, described branch line is provided with sludge pump.
Preferably, described inhalant region is connected with moisturizing groove by pipeline, and described moisturizing groove level height is higher than water distributing area.
Apply technical scheme of the present invention, can make sewage pass through oxygen degraded and oxidation that biofilter material in water distributing area and aerating pipe discharge, the mud producing is retained in water distributing area precipitation, and only allow the water purifying pass through, can in a BAF, reach so completely biological treatment and second pond need be set in downstream carry out sludge settling, and, by the sludge pump on back flushing water inlet pipe, when water distributing area throw out is too much, close the valve of back flushing water inlet pipe and back flushing inlet pipe, start sludge pump, reverse pressure is discharged after the mud gathering water distributing area, carry out again back flushing, shorten backwashing time, increase aquifer yield.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, does not form inappropriate limitation of the present invention, in the accompanying drawings:
Fig. 1 is that embodiment of the present invention system forms schematic diagram.
Embodiment
Below in conjunction with specific embodiment, describe the present invention in detail, in this illustrative examples of the present invention and explanation, be used for explaining the present invention, but not as a limitation of the invention.
As shown in Figure 1, BAF integral body is up-down structure, the water distributing area 1 that upper space is sewage disposal, and 1 below, water distributing area is inhalant region 2, passes through dividing plate 3 intervals between water distributing area 1 and inhalant region 2; In water distributing area, 1 bottom is provided with the aerating pipe 4 of introducing from outside, in this aerating pipe 4, is oxygen, and the part that aerating pipe 4 is positioned at water distributing area 1 is provided with five air diffusers 5;
Be positioned at 2 outsides, inhalant region of 1 below, water distributing area, be connected with respectively back flushing water inlet pipe 6 and the back flushing inlet pipe 7 by valve, controlled; Between valve on back flushing water inlet pipe 6 and back flushing water inlet pipe 6, be also connected with a branch line, on this branch line, be provided with sludge pump 8; On the dividing plate 3 between water distributing area 1 and inhalant region 2, be provided with filter 9, water distributing area 1 is communicated with by filter 9 with inhalant region 2.
The enforcement principle of above-mentioned BAF is: sewage is by water distributing area 1, the pollutent that water body contains is held back by biofilter material 10, and the biological degradation of adhering on the dioxygen oxidation being discharged by aerating pipe 4 and biofilter material 10 transforms, simultaneously, organism and the predetermined substance of dissolved state are also removed, the mud producing is retained in water distributing area 1 precipitation, and only allow the water purifying pass through, can in a BAF, reach like this biological treatment completely and second pond need be set in downstream carry out sludge settling;
For preventing that 1 precipitation causes filter 9 to stop up to throw out in water distributing area, open the valve in back flushing water inlet pipe 6 and back flushing inlet pipe 7, current and air-flow 2 flow to water distributing area 1 by filter 9 from inhalant region, and filter 9 is washed away, can avoid filter 9 to stop up, and, by the sludge pump 8 on back flushing water inlet pipe 6, in water distributing area, 1 throw out when too much, is closed the valve of back flushing water inlet pipe 6 and back flushing inlet pipe 7, starts sludge pump 8, reverse pressure is discharged after the mud gathering water distributing area 1, carry out again back flushing, shorten backwashing time, increase aquifer yield.
Further, as the improvement of above-described embodiment scheme, in inhalant region, 2 outsides are also connected with moisturizing groove 11, and described moisturizing groove 11 level heights are higher than water distributing area 1, make the 2 one-tenth communicating vessels structures in moisturizing groove 11 and inhalant region, can avoid the interior sewage backflow in water distributing area 1 to inhalant region 2.
The technical scheme above embodiment of the present invention being provided is described in detail, applied specific case herein the principle of the embodiment of the present invention and embodiment are set forth, the explanation of above embodiment is only applicable to help to understand the principle of the embodiment of the present invention; , for one of ordinary skill in the art, according to the embodiment of the present invention, in embodiment and range of application, all will change, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (2)
1. a BAF, is characterized in that:
Described BAF is divided into and is positioned at the water distributing area of described BAF space top and the inhalant region of below, described water distributing area, and described water distributing area and inhalant region are set in distance by dividing plate;
Bottom, described water distributing area is provided with aeration tube, and described aeration tube is to water distributing area releasing oxygen;
Described dividing plate is provided with the filter that water distributing area and inhalant region are communicated with;
Described inhalant region is also connected with back flushing water inlet pipe and back flushing inlet pipe, and described back flushing water inlet pipe and back flushing inlet pipe are controlled the water filling of inhalant region and gas injection by valve respectively;
Between back flushing water inlet pipe and the valve of back flushing water inlet pipe, be also provided with branch line, described branch line is provided with sludge pump.
2. the BAF as described in claims, is characterized in that:
Described inhalant region is connected with moisturizing groove by pipeline, and described moisturizing groove level height is higher than water distributing area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010603136.3A CN102557244B (en) | 2010-12-23 | 2010-12-23 | Biological aerated filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010603136.3A CN102557244B (en) | 2010-12-23 | 2010-12-23 | Biological aerated filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102557244A CN102557244A (en) | 2012-07-11 |
| CN102557244B true CN102557244B (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010603136.3A Expired - Fee Related CN102557244B (en) | 2010-12-23 | 2010-12-23 | Biological aerated filter |
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| CN (1) | CN102557244B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668939A (en) * | 2016-03-30 | 2016-06-15 | 内蒙古工业大学 | Combined biofilter device and method for treating papermaking wastewater |
| CN106865745B (en) * | 2017-04-24 | 2022-11-11 | 湖南北控威保特环境科技股份有限公司 | Biological contact oxidation pond |
| CN109020048A (en) * | 2018-07-09 | 2018-12-18 | 中国航空规划设计研究总院有限公司 | A kind of lithium battery waste water initial stage processing integrated apparatus |
| CN115974305B (en) * | 2022-12-09 | 2023-09-12 | 山东中欧膜技术研究有限公司 | Integrated membrane method water treatment system and treatment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1009892C2 (en) * | 1998-08-18 | 2000-02-21 | Watec B V | Biological treatment plant for purifying water, contains closed system formed by a sealed reactor tank and a gas recirculation means |
| GB0229360D0 (en) * | 2002-12-17 | 2003-01-22 | Sev Trent Water Purification L | Biological aerated filter |
| CN101172699A (en) * | 2007-10-19 | 2008-05-07 | 东华大学 | Improved structure for gas and water mix backwash of aerating biological filter |
-
2010
- 2010-12-23 CN CN201010603136.3A patent/CN102557244B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1009892C2 (en) * | 1998-08-18 | 2000-02-21 | Watec B V | Biological treatment plant for purifying water, contains closed system formed by a sealed reactor tank and a gas recirculation means |
| GB0229360D0 (en) * | 2002-12-17 | 2003-01-22 | Sev Trent Water Purification L | Biological aerated filter |
| CN101172699A (en) * | 2007-10-19 | 2008-05-07 | 东华大学 | Improved structure for gas and water mix backwash of aerating biological filter |
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| Publication number | Publication date |
|---|---|
| CN102557244A (en) | 2012-07-11 |
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Granted publication date: 20140212 Termination date: 20141223 |
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