CN203269648U - Biological aerated filter - Google Patents
Biological aerated filter Download PDFInfo
- Publication number
- CN203269648U CN203269648U CN2013203085642U CN201320308564U CN203269648U CN 203269648 U CN203269648 U CN 203269648U CN 2013203085642 U CN2013203085642 U CN 2013203085642U CN 201320308564 U CN201320308564 U CN 201320308564U CN 203269648 U CN203269648 U CN 203269648U
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- China
- Prior art keywords
- filter material
- pipe
- material layer
- water inlet
- biological aerated
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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 - Fee Related
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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 provides a biological aerated filter which comprises an overflow weir, a backwashing water inlet pipe, a secondary filter material layer, a primary filter material layer, a bearing layer, an air distribution pipe, a primary grating, a water inlet pipe, a backwashing air distribution pipe and a sludge discharge pipe in sequence from top to bottom; a water outlet pool is arranged around the overflow weir and is communicated with the water outlet pipe and the backwashing water outlet pipe; and a filter material of the secondary filter material is 3-5mm in particle size and is synthesized by rice hull ash discarded by a biomass power plant by adopting a hydrothermal method. The biological aerated filter is low in cost, energy-saving, environment-friendly, large in specific surface area and liable to growth of microorganisms and has high adsorption efficiency to heavy metal ions; and in addition, two filter material layers are designed, so that the sewage treatment efficiency is improved and the biological aerated filter is strong in practicability.
Description
Technical field
The utility model belongs to technical field of water pollution control, particularly a kind of BAF.
Background technology
BAF is a kind of based on the traditional biological embrane method, integrates the brand-new sewage disposal technology of biological sewage treatment and Depth Filtration.It combines the design advantage of biological contact oxidation reactor and feedwater rapid filter, has save secondary sedimentation equipment, and therefore BAF is widely applied in recent years.
Load the less granulated filler of a certain amount of particle diameter in BAF, the microbial film of granulated filler and apposition growth thereof is main treatment media, comprehensively brings into play filtration and the adsorption of biological metabolism effect, microbial film and filler and carries out advanced treatment of wastewater.
The filler that uses in BAF at present has organic hard materials such as the inorganic hard material such as quartz sand, haydite, hard coal and polyethylene, polypropylene, PVC, the specific surface areas such as filler with low cost such as quartz sand are little, the efficient of degradation of organic substances is undesirable, removal for low-concentration heavy metal ions more can not reach good effect, and the higher filtrate of cost due to technology and investment more high-leveled and difficult to be promoted.
The utility model content
For the problem that background technology exists, the utility model provides a kind of BAF, and it adopts double-layer filter material, and the position of gas distribution pipe is adjusted, it is cheap, obtains good treatment effect through practice, particularly for low concentration heavy metal water, good removal effect is arranged.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of BAF, from top to bottom comprise successively overflow weir, back flushing water inlet pipe, secondary filter material layer,
Elementary filter material layer, supporting layer, gas distribution pipe, elementary grid, water inlet pipe, back flushing gas distribution pipe, shore pipe; Be provided with outlet sump around overflow weir, outlet sump is connected with rising pipe, back flushing rising pipe.
The particle diameter of filter medium of described secondary filter material layer is 3-5mm; The filtrate of elementary filter material layer is quartz sand.
In the utility model, the particle diameter of filter medium of secondary filter material layer is 3-5mm; Filtrate is by discarded rice hull ash Hydrothermal Synthesis, contain the silicate more than 90% in rice hull ash, silicate can be used for the neat filtrate of the high structure of productive value by the method for Hydrothermal Synthesis, the aperture is evenly abundant, specific surface area is large, can be as the carrier of catalyzer, the sorbent material in the sewage off gas treatment etc., there is very large advantage in processing to little pollutant effluents, particularly for the low-concentration heavy metal ions waste water that common sewage is not processed, good removal effect is arranged.
Compared with prior art, the utility model adopts double-layer filter material, has improved the processing efficiency of sewage; Gas distribution pipe is arranged on the water distributing area of supporting layer bottom, makes air water co-flow, has reduced head loss, has improved efficient; The utility model is with low cost, and energy-conserving and environment-protective have very high adsorption efficiency to heavy metal ion, and its specific surface area is large, is easy to microbial growth, and are practical.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1-back flushing water inlet pipe, 2-level filter material layer, the elementary filter material layer of 3-, 4-supporting layer, 5-gas distribution pipe, 6-back flushing gas distribution pipe, 7-overflow weir, 8-outlet sump, 9-rising pipe, 10-back flushing rising pipe, the elementary grid of 11-, 12-water inlet pipe, 13-shore pipe.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model comprises overflow weir 7, back flushing water inlet pipe 1, inferior from top to bottom successively
Level filter material layer 2, elementary filter material layer 3, supporting layer 4, gas distribution pipe 5, elementary grid 11, water inlet pipe 12, back flushing gas distribution pipe 6, shore pipe 13; Be provided with outlet sump 8 around overflow weir, outlet sump 8 is connected with rising pipe 9, back flushing rising pipe 10; The particle diameter of filter medium of secondary filter material layer is 3-5mm; The filtrate of elementary filter material layer is quartz sand.
During the utility model work, former water enters the bottom, filter tank by water inlet pipe, under the effect of elementary grid, holds back SS, makes SS sink to the bottom and enters shore pipe.Water inlet makes the filter tank water inlet evenly under the effect of filtering material resistance; The perforation gas distribution pipe is arranged on the filter material layer bottom, and air carries out gas distribution by it.Former water is through after elementary filter material layer, a large amount of microorganisms of filtering layer surface attachment and the microorganism in filler utilize the dissolved oxygen in water inlet to remove a part of organism and ammonia nitrogen, then enter secondary filter material layer, carrying out deep oxidation decomposes and Filtration Adsorption, suspended matter obviously reduces after filtering through filtering layer simultaneously, water outlet enters outlet sump through overflow weir, then is discharged by rising pipe.
Along with the carrying out of filtering, the microbial film in filtering layer thickens, and filtering cloth head increases, and need to carry out back flushing this moment to filter material layer; Because filtrate density is little, adopt the reverse recoil method of aqueous vapor of innovation, backwashing water is taken from the filter tank water outlet.Backwash process is: when the filter tank needs back flushing, at first close water intaking valve and gas distribution pipe, open filter back washing gas distribution pipe and back flushing water inlet pipe, filter material layer is under the aqueous vapor reverse impact, be attached to suspended matter on filtrate by wash-out, enter shore pipe and discharge, carry out at last drip washing, backwashing water is discharged by the back flushing rising pipe at last.
Claims (2)
1. a BAF, is characterized in that: comprise successively overflow weir, back flushing water inlet pipe, secondary filter material layer, elementary filter material layer, supporting layer, gas distribution pipe, elementary grid, water inlet pipe, back flushing gas distribution pipe, shore pipe from top to bottom; Be provided with outlet sump around overflow weir, outlet sump is connected with rising pipe, back flushing rising pipe.
2. a kind of BAF according to claim 1, it is characterized in that: the particle diameter of filter medium of described secondary filter material layer is 3-5mm; The filtrate of elementary filter material layer is quartz sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203085642U CN203269648U (en) | 2013-05-31 | 2013-05-31 | Biological aerated filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203085642U CN203269648U (en) | 2013-05-31 | 2013-05-31 | Biological aerated filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203269648U true CN203269648U (en) | 2013-11-06 |
Family
ID=49500100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203085642U Expired - Fee Related CN203269648U (en) | 2013-05-31 | 2013-05-31 | Biological aerated filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203269648U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408881A (en) * | 2018-03-19 | 2018-08-17 | 包头钢铁（集团）有限责任公司 | It is a kind of using metallurgical solid waste as the biological aerated filter of filtrate |
| CN108751623A (en) * | 2018-08-13 | 2018-11-06 | 武汉森泰环保股份有限公司 | A kind of multifunction double-layer filter tank |
-
2013
- 2013-05-31 CN CN2013203085642U patent/CN203269648U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408881A (en) * | 2018-03-19 | 2018-08-17 | 包头钢铁（集团）有限责任公司 | It is a kind of using metallurgical solid waste as the biological aerated filter of filtrate |
| CN108751623A (en) * | 2018-08-13 | 2018-11-06 | 武汉森泰环保股份有限公司 | A kind of multifunction double-layer filter tank |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140531 |