CN103466789A - Biological aerated filter for sewage treatment - Google Patents
Biological aerated filter for sewage treatment Download PDFInfo
- Publication number
- CN103466789A CN103466789A CN2013103922887A CN201310392288A CN103466789A CN 103466789 A CN103466789 A CN 103466789A CN 2013103922887 A CN2013103922887 A CN 2013103922887A CN 201310392288 A CN201310392288 A CN 201310392288A CN 103466789 A CN103466789 A CN 103466789A
- Authority
- CN
- China
- Prior art keywords
- filter
- layer
- particle diameters
- biological
- light
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a sewage biological aerated filter. A filter device of the filter comprises a supporting layer and a filter material layer which are arranged from bottom to top, wherein a large-particle-diameter light filler layer is arranged on the upper part of the filter material layer. Filter materials with different particle diameters are used in the biological aerated filter, filter materials with larger particle diameters are used in the supporting layer, filter materials with smaller particle diameters are used in an intermediate layer, and light filter materials with larger particle diameters are added in the surface layer. The light filter materials with larger particle diameters in the surface layer play an effect of pretreatment, so that the surface layer can be used for performing biological treatment and accommodating massive SS (suspending substances), the accumulation speed of the SS amount of the filter materials in the intermediate layer can be greatly retarded, and the time of flow to a critical value can be prolonged, so that the backwashing cycle of the biological filter can be prolonged, the efficiency can be improved, the backwashing water can be saved, and the operation cost can be reduced; relative positions of the structure layers of the filter are not changed after backwashing, the effluent is stable, and the quality is high.
Description
Technical field:
The present invention relates to a kind of sewage to dirty BAF, especially a kind of BAF with three layer filtration thing.
Background technology:
Microorganism cells almost can adhere to by any suitable carrier surface in water surrounding securely, and Growth and reproduction thereon, by polymer outside the born of the same parents that stretch to extracellular in cell, makes microorganism cells form fibrous tangled structure, just is referred to as microbial film.Particulate matter in the BAF water inlet is trapped within surface, filter tank and filler space, and the excessive microorganism that grows also is gathered in surface, filter tank and filler space, and along with the continuous service for the treatment of processes, in filler, SS increase, voidage reduce.Reach or while approaching design discharge, total head loss meeting approaches by the necessary head of BAF or particle penetration occurs, these two kinds may situations before any occurs, BAF should be cleaned immediately.
Existing BAF operation is usually rinsed once in one day, and the 3-5% that the back flushing water yield is amount of inlet water carries out smoothly to guarantee to filter.But flushing can make microbial film seriously come off frequently, cause biomass in packing layer to reduce, so that affect treatment effect, and easily cause breakage, the loss of filler and increase unnecessary back flushing water loss, current consumption.
Summary of the invention
The present invention is directed to the above-mentioned deficiency of prior art, a kind of backwashing period that can extend biological filter is provided, raise the efficiency, reduce running cost, optimize the BAF of water outlet.
The technical solution used in the present invention is:
A kind of aeration in sewage treatment biological filter, its filtration unit is placed with supporting layer, filter material layer from bottom to top, on filter material layer top, is provided with the large particle-size and light-weight filler layer.
The volcanics that described large particle-size and light-weight filler layer is is 6 ~ 10 mm by particle diameter or hard coal or artificial haydite or above-mentioned materials mix arbitrarily formation, and its thickness is 1000 mm.
The quartz sand that described filter material layer is is 4 ~ 5 mm by particle diameter forms, and its thickness is 1800mm.
Described supporting layer is to consist of large particle diameter material, and its thickness is 800 mm.
In BAF of the present invention with the filtrate of different-grain diameter, the filtrate larger with particle diameter at supporting layer, the filtrate that middle level is less with particle diameter, top layer increases the larger light filter material of one deck particle diameter.The light filter material that the top layer particle diameter is larger plays Effect of Pretreatment, this one deck not only can be carried out a biological disposal upon, and can take a large amount of SS in, greatly slowed down the accumulating rate of middle level filtrate SS amount, extended flow and arrived the time of threshold value, so also extended the backwashing period of biological filter, raised the efficiency, save backwash water, reduce running cost; And after back flushing, filter tank structure layer relative position is constant, stable water outlet, quality is higher.
The accompanying drawing explanation:
Fig. 1 is structural representation of the present invention.
Specific embodiment:
Further illustrate embodiments of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of sewage aeration biological filter, its filtration unit is placed with supporting layer 1, the 2000 mm filter material layer 2 of the large particle diameter of 800 mm from bottom to top, is provided with 1000 mm large particle-size and light-weight filler layers 3 on filter material layer 2 tops.The volcanics that large particle-size and light-weight filler layer 3 is is 6 ~ 10 mm by particle diameter or hard coal or artificial haydite or above-mentioned materials mix arbitrarily formation.The quartz sand that filter material layer 2 is is 4 ~ 5 mm by particle diameter forms.
Claims (4)
1. a sewage aeration biological filter, its filtration unit is placed with supporting layer (1), filter material layer (2) from bottom to top, it is characterized in that: on filter material layer (2) top, be provided with large particle-size and light-weight filler layer (3).
2. sewage aeration according to claim 1 biological filter; it is characterized in that: the volcanics that described large particle-size and light-weight filler layer (3) is is 6 ~ 10 mm by particle diameter or hard coal or artificial haydite or above-mentioned materials mix arbitrarily formation, and its thickness is 1000 mm.
3. sewage aeration according to claim 1 biological filter is characterized in that: the quartz sand that described filter material layer (2) is is 4 ~ 5 mm by particle diameter forms, and its thickness is 1800 mm.
4. sewage aeration according to claim 1 biological filter, it is characterized in that: described supporting layer (1) is to consist of large particle diameter material, and its thickness is 800 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103922887A CN103466789A (en) | 2013-09-03 | 2013-09-03 | Biological aerated filter for sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103922887A CN103466789A (en) | 2013-09-03 | 2013-09-03 | Biological aerated filter for sewage treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103466789A true CN103466789A (en) | 2013-12-25 |
Family
ID=49791877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103922887A Pending CN103466789A (en) | 2013-09-03 | 2013-09-03 | Biological aerated filter for sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103466789A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848496A (en) * | 2014-02-18 | 2014-06-11 | 中持（北京）水务运营有限公司 | Biological aerated filter adopting combined packing way |
| CN103910433A (en) * | 2014-03-21 | 2014-07-09 | 大连海洋大学 | Tower-type clam worm biofilter |
| CN105036332A (en) * | 2015-07-10 | 2015-11-11 | 南京大学 | Alternating internal-recycle biological filter sewage treatment device and method using same |
| CN106882908A (en) * | 2017-04-18 | 2017-06-23 | 湖北百清环保技术有限公司 | Small towns sewage treatment process and equipment |
-
2013
- 2013-09-03 CN CN2013103922887A patent/CN103466789A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848496A (en) * | 2014-02-18 | 2014-06-11 | 中持（北京）水务运营有限公司 | Biological aerated filter adopting combined packing way |
| CN103910433A (en) * | 2014-03-21 | 2014-07-09 | 大连海洋大学 | Tower-type clam worm biofilter |
| CN105036332A (en) * | 2015-07-10 | 2015-11-11 | 南京大学 | Alternating internal-recycle biological filter sewage treatment device and method using same |
| CN106882908A (en) * | 2017-04-18 | 2017-06-23 | 湖北百清环保技术有限公司 | Small towns sewage treatment process and equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2013148772A (en) | REACTOR FOR BIOLOGICAL SEWAGE TREATMENT AND METHOD | |
| CN103466789A (en) | Biological aerated filter for sewage treatment | |
| CN203613071U (en) | Sewage treatment device | |
| CN203159412U (en) | Unpowered domestic wastewater treatment system | |
| CN101759284A (en) | Biological aerated filter with large particle-size and light-weight filler at surface layer | |
| CN203486956U (en) | Improved biological aerated filter | |
| CN201317707Y (en) | Aeration biological filtering pool with three layers of filtering | |
| CN103341286B (en) | Degradable filtrate marsh liquid filter and filter method thereof | |
| CN101580327A (en) | Sewage treatment process and device thereof | |
| CN203754489U (en) | Suspended bed activated coke biological aerated filter | |
| CN102960295B (en) | Process flow of water circulation of culture pond | |
| CN202921177U (en) | Hollow fiber membrane module and membrane bioreactor comprising same | |
| CN102198974A (en) | On-line automatic cleaning anaerobic microgrid reactor | |
| CN202080949U (en) | Moving bed type biofilm reaction tank | |
| CN202892995U (en) | Inclined-plate sedimentation tank | |
| CN202625917U (en) | Composite filler biological aerated filter | |
| CN201596396U (en) | Novel filter plate | |
| CN103224287B (en) | Device and method for treating organic wastewater by using hydraulic jet circulating anaerobic biofilter | |
| CN204317303U (en) | aquaculture circulating purification system | |
| CN201404728Y (en) | Floating bed filter | |
| CN211813687U (en) | Stacked sewage treatment system | |
| CN101734786A (en) | Biological aerated filter with three filter layers | |
| CN204779015U (en) | Sewage treatment system | |
| CN201288095Y (en) | Aerating biological filter with large grain diameter light stuffing on surface layer | |
| CN1283559C (en) | Ceramic filtering material filter tank for water treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131225 |