CN203582572U - Biological aerated filter with material running preventing device - Google Patents
Biological aerated filter with material running preventing device Download PDFInfo
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- CN203582572U CN203582572U CN201320781868.0U CN201320781868U CN203582572U CN 203582572 U CN203582572 U CN 203582572U CN 201320781868 U CN201320781868 U CN 201320781868U CN 203582572 U CN203582572 U CN 203582572U
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- pipe
- inlet pipe
- baf
- back flushing
- material layer
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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 a biological aerated filter comprising a tank body, a water inlet pipe, an intake pipe, an aerating system, a back-flushing water inlet pipe, a back-flushing intake pipe, a filter material layer, a water outlet zone, a water outlet pipe and a back-flushing drainage pipe, wherein the water inlet pipe, the intake pipe, the back-flushing water inlet pipe and the back-flushing intake pipe are arranged below the tank body; the filter material layer is arranged in the middle of the tank body; the aerating system is arranged below the filter material layer; the aerating system is communicated with the intake pipe; the water outlet zone, the water outlet pipe and the back-flushing drainage pipe are arranged above the tank body; an overflow tank is formed above the water outlet zone, and the overflow tank is communicated with the water outlet pipe; and a material running preventing device is arranged on a nozzle of the water outlet pipe and/or the overflow tank. The biological aerated filter disclosed by the utility model is simple in structure; and the aerated filter, through the strainer-type material running preventing device which is reasonable in clearance, can effectively intercept a ceramisite filter material which is flushed by gas and water when implementing gas-water combined back-flushing, and can avoid blockage, so as to avoid a material running phenomenon in long-term operation, thus guaranteeing effluent quality.
Description
Technical field
The utility model relates to a kind of BAF, particularly a kind of BAF with anti-race materials device.
Background technology
BAF (BAF-Biological Aerated Filters) is also submerged BAF (SBAF-Submerged Biological Aerated Filrers), be to develop on the basis of the biomembrance process such as ordinary biofilter, high-rate filter, biological filtering tower combined working, biological contact oxidation process, be called as third generation biological filter.Fully, for the mentality of designing of having reflected sewage disposal contact oxidation method and feedwater rapid filter, need aeration, high filtration speed, hold back suspended substance, need the features such as regular back flushing.Its technological principle is, loads the particulate filter that a certain amount of particle diameter is less in filter tank, as ceramic grain filter, and the filter material surface highly active microbial film of growing, the inner aeration in filter tank.Effluent stream through time, utilize the oxidative degradation ability of the high-concentration biological film that the high-specific surface area of filtrate brings to carry out fast purification to sewage, this is biological Oxidative Degradation Process; Meanwhile, effluent stream process, filtrate is compaction state, utilizes feature and biomembranous biological flocculation that particle diameter of filter medium is less, holds back the suspended substance in sewage, and guarantees that the microbial film coming off can not drift out with water, and this is crown_interception; After operation certain hour, because of the increase of head loss, need carry out back flushing to filter tank, to discharge the suspended substance of holding back and to upgrade microbial film, this is backwash process.
The major advantage of biological aerated filter process is: integrate the reactor of biomembrance process and activated sludge process, effluent quality is high, processing load is large.Employing particle diameter is little, than the long-pending large filtrate of table, has significantly improved biological concentration; Adopt biological treatment and filtration treatment associated form, saved secondary sedimentation basins, adopt the mode of back flushing, removed the possibility of stopping up from, improved biomembranous activity, employing microbial film adds the mode of biological floe combination treatment simultaneously, has brought into play the advantage of biomembrance process and activated sludge process simultaneously.Filler itself is held back and the biological flocculation of surface biological film, makes water outlet SS very low, is generally no more than 10mg/L, and water outlet is very as clear as crystal; Because of constantly back flushing, microbial film is able to effective renewal, shows as microbial film thinner, and activity is very high.Floor space is little, and initial cost is economized, and after BAF, does not establish secondary sedimentation basins, can save occupation of land and the investment of secondary sedimentation basins.BAF floor space is only the 1/10-1/5 of common process.Processing load is high, the residence time is short, thereby pond appearance is less, and initial cost is saved at least 20-30% than common process.
Biological aerated filter process exists subject matter to be: run material problem, filter tank is after operation one-period, between filtrate, stop up, need carry out back flushing, for backwash thorough, all adopt combined water and air backwash, but part filtrate is impacted the discharge outlet to exhalant region by zooming water, gas during combined water and air backwash, cause running material phenomenon.The existence of running material problem, causes filtrate amount fewer and feweri, and the minimizing of filtrate amount affects the decline of biomass, finally affects effluent quality.
Summary of the invention
The object of the invention is, for the race material problem existing in existing biological aerated filter process backwash process, provides a kind of BAF that anti-race materials device has been installed, and can effectively solve the race material problem in backwash process, guarantees effluent quality.
The object of the invention is to be achieved through the following technical solutions:
A kind of BAF, comprise pond body 1, water inlet pipe 2, inlet pipe 3, aerating system 4, back flushing water inlet pipe 5, back flushing inlet pipe 6, filter material layer 7, exhalant region 8, rising pipe 9 and back flushing water shoot 10, body 1 bottom, described pond is provided with water inlet pipe 2, inlet pipe 3, back flushing water inlet pipe 5, back flushing inlet pipe 6; Body 1 middle part, described pond is provided with filter material layer 7, and described filter material layer 7 belows are provided with aerating system 4, and described aerating system 4 is communicated with inlet pipe 3; Body 1 top, described pond is provided with exhalant region 8, rising pipe 9 and back flushing water shoot 10, and 8 tops, described exhalant region are provided with overflow groove 11, and described overflow groove 11 and rising pipe 9 are communicated with; The mouth of pipe of described rising pipe 9 and/or overflow groove 11 are provided with anti-race materials device 14.
Described BAF is also provided with manhole 12, and described manhole 12 is located at pond body 1 bottom, and the number of described manhole 12 is 2.
Pond body 1 bottom of described BAF is also provided with blow-down pipe 13, sinks to the suspended substance at the bottom of pond during for emptying back flushing.
Described anti-race materials device 14 is stainless steel filtering net, and the two ends of described stainless steel filtering net are fixed by channel-section steel or angle steel, and the space of described stainless steel filtering net is Φ 2mm.
Described filter material layer 7 filled biomass spherical haydite filtrates, the aperture of described biological spherical haydite filtrate is 3-5mm.
Compared to the prior art, beneficial effect of the present invention:
BAF of the present invention is simple in structure, the anti-race materials device of filter net type has been installed in exhalant region, filter screen space is reasonable, the ceramic grain filter having been rushed by air water in the time of can effectively tackling filter tank combined water and air backwash, and can not be plugged, thereby guarantee that material phenomenon does not appear running in filter tank when long-time running, guarantees effluent quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of BAF of the present invention.
Fig. 2 is the vertical view of BAF of the present invention.
Fig. 3 is the anti-race materials device of the present invention structural representation.
In figure, 1-pond body, 2-water inlet pipe, 3-inlet pipe, 4-aerating system, 5-back flushing water inlet pipe, 6-back flushing inlet pipe, 7-filter material layer, 8-exhalant region, 9-rising pipe, 10-back flushing water shoot, 11-overflow groove, 12-manhole, 13-blow-down pipe, the anti-race materials device of 14-.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of BAF, comprise pond body 1, water inlet pipe 2, inlet pipe 3, aerating system 4, back flushing water inlet pipe 5, back flushing inlet pipe 6, filter material layer 7, exhalant region 8, rising pipe 9 and back flushing water shoot 10, body 1 bottom, described pond is provided with water inlet pipe 2, inlet pipe 3, back flushing water inlet pipe 5, back flushing inlet pipe 6; Body 1 middle part, described pond is provided with filter material layer 7, and described filter material layer 7 belows are provided with aerating system 4, and described aerating system 4 is communicated with inlet pipe 3; Body 1 top, described pond is provided with exhalant region 8, rising pipe 9 and back flushing water shoot 10, and 8 tops, described exhalant region are provided with overflow groove 11, and described overflow groove 11 and rising pipe 9 are communicated with; The mouth of pipe of described rising pipe 9 and/or overflow groove 11 are provided with anti-race materials device 14.
Described BAF is also provided with manhole 12, and described manhole 12 is located at pond body 1 bottom, and the number of described manhole 12 is 2.
Pond body 1 bottom of described BAF is also provided with blow-down pipe 13, sinks to the suspended substance at the bottom of pond during for emptying back flushing.
Described anti-race materials device 14 is stainless steel filtering net, and the two ends of described stainless steel filtering net are fixed by channel-section steel or angle steel, and the space of described stainless steel filtering net is Φ 2mm.
Described filter material layer 7 filled biomass spherical haydite filtrates, the aperture of described biological spherical haydite filtrate is 3-5mm.
BAF of the present invention is simple in structure, the anti-race materials device of filter net type has been installed in exhalant region, filter screen space is reasonable, the ceramic grain filter having been rushed by air water in the time of can effectively tackling filter tank combined water and air backwash, and can not be plugged, thereby guarantee that material phenomenon does not appear running in filter tank when long-time running, guarantees effluent quality.
Claims (5)
1. a BAF, it is characterized in that: comprise pond body (1), water inlet pipe (2), inlet pipe (3), aerating system (4), back flushing water inlet pipe (5), back flushing inlet pipe (6), filter material layer (7), exhalant region (8), rising pipe (9) and back flushing water shoot (10), described pond body (1) bottom is provided with water inlet pipe (2), inlet pipe (3), back flushing water inlet pipe (5), back flushing inlet pipe (6); Described pond body (1) middle part is provided with filter material layer (7), and described filter material layer (7) below is provided with aerating system (4), and described aerating system (4) is communicated with inlet pipe (3); Described pond body (1) top is provided with exhalant region (8), rising pipe (9) and back flushing water shoot (10), top, described exhalant region (8) is provided with overflow groove (11), and described overflow groove (11) and rising pipe (9) are communicated with; The mouth of pipe of described rising pipe (9) and/or overflow groove (11) are provided with anti-race materials device (14).
2. BAF according to claim 1, is characterized in that: described BAF is also provided with manhole (12), and described manhole (12) is located at pond body (1) bottom, and the number of described manhole (12) is 2.
3. BAF according to claim 1, is characterized in that: pond body (1) bottom of described BAF is also provided with blow-down pipe (13).
4. BAF according to claim 1, is characterized in that: described anti-race materials device (14) is stainless steel filtering net, and the two ends of described stainless steel filtering net are fixed by channel-section steel or angle steel, and the space of described stainless steel filtering net is Φ 2mm.
5. BAF according to claim 1, is characterized in that: described filter material layer (7) filled biomass spherical haydite filtrate, the aperture of described biological spherical haydite filtrate is 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781868.0U CN203582572U (en) | 2013-12-02 | 2013-12-02 | Biological aerated filter with material running preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781868.0U CN203582572U (en) | 2013-12-02 | 2013-12-02 | Biological aerated filter with material running preventing device |
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| Publication Number | Publication Date |
|---|---|
| CN203582572U true CN203582572U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320781868.0U Expired - Fee Related CN203582572U (en) | 2013-12-02 | 2013-12-02 | Biological aerated filter with material running preventing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108789A (en) * | 2014-05-27 | 2014-10-22 | 苏州优德通力电气有限公司 | Sewage nitrogen removal treatment device and use method thereof |
| CN105523635A (en) * | 2016-01-28 | 2016-04-27 | 西安建筑科技大学 | Integrated biological contact device |
| CN106830379A (en) * | 2017-03-21 | 2017-06-13 | 中铁八局集团市政工程有限公司 | Municipal sewage plant aids in blow-down pipe construction method |
| CN110845000A (en) * | 2019-12-16 | 2020-02-28 | 浙江大学 | High hydraulic load aeration biological filter with material-running prevention device |
-
2013
- 2013-12-02 CN CN201320781868.0U patent/CN203582572U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108789A (en) * | 2014-05-27 | 2014-10-22 | 苏州优德通力电气有限公司 | Sewage nitrogen removal treatment device and use method thereof |
| CN105523635A (en) * | 2016-01-28 | 2016-04-27 | 西安建筑科技大学 | Integrated biological contact device |
| CN105523635B (en) * | 2016-01-28 | 2017-12-26 | 西安建筑科技大学 | A kind of integrated biological device |
| CN106830379A (en) * | 2017-03-21 | 2017-06-13 | 中铁八局集团市政工程有限公司 | Municipal sewage plant aids in blow-down pipe construction method |
| CN106830379B (en) * | 2017-03-21 | 2020-08-07 | 中铁八局集团第三工程有限公司 | Construction method of auxiliary emptying pipe of municipal sewage treatment plant |
| CN110845000A (en) * | 2019-12-16 | 2020-02-28 | 浙江大学 | High hydraulic load aeration biological filter with material-running prevention device |
| CN110845000B (en) * | 2019-12-16 | 2024-04-19 | 浙江大学 | High hydraulic load biological aerated filter with anti-running device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20161202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |