CN203582573U - Biological aerated filter with folded plate overflow device - Google Patents
Biological aerated filter with folded plate overflow device Download PDFInfo
- Publication number
- CN203582573U CN203582573U CN201320782962.8U CN201320782962U CN203582573U CN 203582573 U CN203582573 U CN 203582573U CN 201320782962 U CN201320782962 U CN 201320782962U CN 203582573 U CN203582573 U CN 203582573U
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- China
- Prior art keywords
- inlet pipe
- baf
- filter
- pipe
- overflow device
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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 discloses a biological aerated filter with a folded plate overflow device. The biological aerated filter comprises a filter body, a water inlet pipe, an air inlet pipe, an aeration system, a backwash water inlet pipe, a backwash air inlet pipe, a filter material layer, a water outlet area, a water outlet pipe and a backwash drainage pipe, wherein the water inlet pipe, the air inlet pipe, the backwash water inlet pipe and the backwash air inlet pipe are arranged on the lower part of the filter body; the filter material layer is arranged in the middle of the filter body; the aeration system is arranged below the filter material layer and is communicated with the air inlet pipe; the water outlet area, the water outlet pipe and the backwash drainage pipe are arranged on the upper part of the filter body; the folded plate overflow device is arranged in the water outlet area. The biological aerated filter disclosed by the utility model is simple in structure; the folded plate overflow device is arranged, so that a phenomenon that materials run away during long-term operation in the filter is avoided, the problem that the materials run away in the backwash process can be effectively solved, and the effluent quality is guaranteed.
Description
Technical field
The utility model relates to a kind of BAF, particularly a kind of BAF with flap overflow 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 flap overflow device is 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 described exhalant region 8 is provided with flap overflow device 11.
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.
The pond body 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.
The pond body inwall of described BAF and be also provided with overflow groove 14 above described flap overflow device 11, described overflow groove 14 and rising pipe 9 are communicated with.
Described flap overflow device 11 consists of a plurality of flaps.
Described filter material layer 7 filled biomass spherical haydite filtrates.
The filtrate of carrying secretly in the water of overcurrent, water in overflow device during combined water and air backwash all can form collision with upper wall, collision frequency is determined by several bendings road, each collision all can make the energy that filtrate makes progress reduce a lot, and break-in after every grade of collision, after break-in, in water, filtrate rises difficult all the more, filtrate after what collision, break-in, decline gravity is greater than raising force, is finally blocked.
Compared to the prior art, beneficial effect of the present invention:
BAF of the present invention is simple in structure, and flap overflow device has been installed, thereby guarantees that material phenomenon does not appear running in filter tank when long-time running, can effectively solve the race material problem in backwash process, 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.
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-flap overflow device, 12-manhole, 13-blow-down pipe, 14-overflow groove.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
As shown in Figure 1 and Figure 2, a kind of BAF, the filter material layer 7, exhalant region 8, rising pipe 9 and the back flushing water shoot 10 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, filled biomass spherical haydite filtrate, 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 described exhalant region 8 is provided with flap overflow device 11.
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.
The pond body 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.
The pond body inwall of described BAF and be also provided with overflow groove 14 above described flap overflow device 11, described overflow groove 14 and rising pipe 9 are communicated with.
Described flap overflow device 11 consists of a plurality of flaps.
The filtrate of carrying secretly in the water of overcurrent, water in overflow device during combined water and air backwash all can form collision with upper wall, collision frequency is determined by several bendings road, each collision all can make the energy that filtrate makes progress reduce a lot, and break-in after every grade of collision, after break-in, in water, filtrate rises difficult all the more, filtrate after what collision, break-in, decline gravity is greater than raising force, is finally blocked.
BAF of the present invention has been installed flap overflow device, can effectively solve the race material problem in backwash process, guarantees effluent quality.
Claims (6)
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), and described exhalant region (8) are provided with flap overflow device (11).
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, it is characterized in that: pond body (1) inwall of described BAF and be also provided with overflow groove (14) in the top of described flap overflow device (11), described overflow groove (14) and rising pipe (9) are communicated with.
5. BAF according to claim 1, is characterized in that: described flap overflow device (11) consists of a plurality of flaps.
6. BAF according to claim 1, is characterized in that: described filter material layer (7) filled biomass spherical haydite filtrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320782962.8U CN203582573U (en) | 2013-12-02 | 2013-12-02 | Biological aerated filter with folded plate overflow device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320782962.8U CN203582573U (en) | 2013-12-02 | 2013-12-02 | Biological aerated filter with folded plate overflow device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203582573U true CN203582573U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320782962.8U Expired - Fee Related CN203582573U (en) | 2013-12-02 | 2013-12-02 | Biological aerated filter with folded plate overflow device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203582573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104710083A (en) * | 2015-03-24 | 2015-06-17 | 赵文勇 | Sewage treatment device and sewage treatment process thereof |
-
2013
- 2013-12-02 CN CN201320782962.8U patent/CN203582573U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104710083A (en) * | 2015-03-24 | 2015-06-17 | 赵文勇 | Sewage treatment device and sewage treatment process thereof |
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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: 20140507 Termination date: 20161202 |