CN203794689U - Biological aerated filter - Google Patents
Biological aerated filter Download PDFInfo
- Publication number
- CN203794689U CN203794689U CN201420181719.5U CN201420181719U CN203794689U CN 203794689 U CN203794689 U CN 203794689U CN 201420181719 U CN201420181719 U CN 201420181719U CN 203794689 U CN203794689 U CN 203794689U
- Authority
- CN
- China
- Prior art keywords
- filter
- baf
- filter block
- layer
- material layer
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 24
- 239000000706 filtrate Substances 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 5
- 239000011449 brick Substances 0.000 abstract 7
- 239000010410 layer Substances 0.000 description 29
- 238000010276 construction Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003637 basic solution Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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 utility model provides a biological aerated filter. A filter material layer, a bearing plate and a filter brick layer are arranged in a filter body of the biological aerated filter in sequence. The filter material layer is provided with filter materials, the bearing plate is used for bearing the filter materials in the filter material layer, the bearing plate is arranged adjacent to the filter material layer, the filter brick layer is used for distributing water and gas, the filter brick layer is composed of a plurality of filter bricks which are laid flatly, the filter brick layer is arranged adjacent to the bearing plate, the filter material layer, the bearing plate and the filter brick layer are adjacently arranged in sequence from top to bottom, and the filter brick layer is arranged adjacent to the filter bottom of the filter body.
Description
Technical field
The utility model relates to sewage treatment area, particularly for the treatment of the BAF of sewage.
Background technology
In Sewage treatment systems, often use at present BAF.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, obtains large development the beginning of the nineties, and maximum treatment scale reaches hundreds of thousands of tpd, and develop into can denitrogenation dephosphorizing.This technique has removes SS, COD, BOD, nitrated, denitrogenation, dephosphorization, removal AOX(objectionable impurities) effect.BAF is collection bio-oxidation and the novel process of holding back suspended solids one.
At present, BAF adopts whole distribute water and air system of watering filter plate+filter substantially, the BAF of the prior art 100 for example schematically showing in accompanying drawing 1, this BAF comprises: filter material layer 11, supporting layer 12, integrated poured filter plate (the whole filter plate that waters) 13 and filter chamber 14.Filter 15 is fixedly installed in whole watering on filter plate 13, and during backwash, backwash air and backwash water are jointly entered and from the filter cap on filter top, discharged after mixing by filter 15 bottoms.This system of the prior art is being built and in servicely there will be many problems.
For example:
Civil engineering and installation are complicated, long construction period, and construction precision is difficult for guaranteeing.Whole pond filter plate need guarantee lateral error < ± 5mm.Filter bar built-in fitting need shift to an earlier date embedding being fixed on filter plate reinforcing bar, and filter is arranged and is generally 36/m
2, with single lattice 60m
2calculate, every lattice filter reaches more than 2000, and needs to guarantee whole filter lateral error < ± 5mm.
Filter plate needs to arrange 1 meter of high filter chamber below, for gas distributing pipeline and maintenance repair are installed, does not more play the effect of removing pollutent therefore filter chamber occupies pond body bulk, has wasted the volume of biological filter.
In the biological filter of prior art, every square metre only has 36 distribute water and air points, and the less backwash intensity that causes of distribute water and air point is uneven.
Filter is in operation and easily occurs breakage or latch up phenomenon, thereby makes backwash intensity uneven, affects filter tank operating performance.
For making distribute water and air more evenly and preventing filter clogging filter, the above filtrate of filter plate needs to arrange 400mm cobble supporting layer below.Cobble supporting layer occupies filter tank volume on the one hand, strengthens on the other hand due to cobble space, easily deposits mud, and cannot backwash out, long-time running occurs that supporting layer hardens and causes distribute water and air to occur short flow phenomenon.
Prior art generally adopts following measures:
1, for guaranteeing the whole filter plate construction level error of watering, concrete continuously poured in one completes, and after initial set, settles springboard press polish concrete surface three times.Filter plate adds straw bag and covers after building, and the moist curing that waters, and curing time is no less than 7 days.In preserving period, it is not trampled or is installed filter.
2, for guaranteeing that filter cap installs lateral error in tolerable limit, need be filled to cloth pool, filter tank and in built-in base, regulate that screw thread is suitable for reading to be flushed, as screw rod, adjust benchmark.And use special tool adjusting screw(rod), make on it transverse plane and cloth pool horizontal plane on sustained height.
3, the problem that is in operation and damages or stop up for solving filter, now designs detachable filter, and the filter chamber inside that dismounting and change is operated in filter plate bottom completes.
4, for solving supporting layer, accumulate the problem that mud hardens, the design of supporting layer has been cancelled in some filter tank, the filtrate of directly mating formation on filter plate.
Therefore the 1st, 2 technical measures, although can guarantee the construction precision that filter plate is built and filter is installed, construct very complicated, precision is difficult for guaranteeing.Meanwhile, tie up muscle longer to the construction period of filter installation from filter plate, executive cost is higher.Although the 3rd technical measures can effectively be changed infringement filter, while changing, need to manually enter enclosed space operation by after the body emptying of whole pond, also there is potential safety hazard in complicated operation.Article 4, technical measures, and cannot accumulate from basic solution the problem of mud.Because the above about 100mm of filter is dead band within the scope of left and right, during backwash to dead band substantially without cleaning performance, the formation in this dead band is to be determined by this special distribute water and air form of filter.Conventional filter diameter 50mm is little a lot of compared with the spacing of 150-200mm between filter, backwash water is gentle discharges rear rising rapidly by filter cap, until rise on filter, within the scope of 100mm left and right, could on horizontal plane, spread evenly, therefore be dead band within the scope of the above about 100mm of filter left and right.
Therefore, need a kind of novel BAF, novel distribute water and air system can be used in this biological filter, with the distribute water and air system of " the whole filter plate+filter that waters " that replace using in existing BAF, thereby reach, reduce difficulty of construction, save construction cost, strengthen backwash effect, reduce the object of operation and maintenance expense.
Utility model content
The purpose of this utility model is to solve the aforementioned problems in the prior, and has proposed a kind of novel BAF.This BAF is simple in structure, it is simple to install, short construction period, executive cost is low, backwash is effective, operation and maintenance expense is low, can better carry out water and air distributing, avoid whole civil engineering of watering filter plate simultaneously, can greatly reduce civil engineering difficulty, shortened construction period.
According to first aspect of the present utility model, a kind of BAF has been proposed, in the pond body of described BAF, be furnished with successively: filter material layer, this filter material layer is furnished with filtrate; Filtrate in filter material layer is carried out to the supporting plate of support, this supporting plate next-door neighbour filter material layer is arranged; Filter block layer for distribute water and air, this filter block layer is formed and is close to described supporting plate by the polylith filter block tiling to be arranged, wherein said filter material layer, supporting plate and filter block layer from top to bottom successively next-door neighbour arrange, and the pond base fabric that wherein said filter block layer is close to described pond body is put.
According to second aspect of the present utility model, described filter block can have double cavity structure.
According to the third aspect of the present utility model, in described biological filter, described filter block has the gap at top.
According to fourth aspect of the present utility model, in described biological filter, the distribution density in the space at described filter block top is 120～300/m
2.
According to the 5th aspect of the present utility model, in described biological filter, the distribution density in the space at described filter block top is 240/m
2.
According to the 6th aspect of the present utility model, in described biological filter, described filter block is rectangular parallelepiped, and this filter block is of a size of: length * wide * height=(500～1200) * (200～300) * (200～300) mm.
According to the 7th aspect of the present utility model, in described biological filter, the height of described supporting plate is 15-35mm, and the length and width size of described supporting plate is identical with described filter block layer.
By utilizing the utility model, the advantage that can bring is at least following aspect:
Filter block and supporting plate are moulding product, can purchase in advance or prefabricated filter block and supporting plate.Therefore, in the construction site of BAF, install simply, short construction period, executive cost is low.Water and air distributing is effective, and filter tank backwash is more even.Filter block is twice water and air distributing structure design, and water and air distributing system of backwash strength ratio filter is more even; Filter block unit surface the number of openings increases, and water and air distributing effect is compared and is greatly improved with filter.Adopt filter block distribute water and air, cancelled filter chamber and the supporting layer of traditional BAF, avoided whole civil engineering of watering filter plate, can greatly reduce civil engineering difficulty, shorten construction period.
Accompanying drawing explanation
With reference to accompanying drawing, the more object of the utility model, function and advantage will be illustrated by the description for embodiment of the present utility model below, in accompanying drawing:
Fig. 1 is the schematic diagram of BAF of the prior art.
Fig. 2 is according to the structural representation of the BAF of an embodiment of the present utility model.
Embodiment
By reference to one exemplary embodiment, the purpose of this utility model and function and will be illustrated for realizing the method for these objects and function.Yet the utility model is not limited to following disclosed one exemplary embodiment; Can to it, be realized by multi-form.The essence of specification sheets is only to help various equivalent modifications Integrated Understanding detail of the present utility model.
Hereinafter, embodiment of the present utility model will be described with reference to the drawings.In the accompanying drawings, identical Reference numeral represents same or similar parts, or same or similar step.
In this specification sheets, for describing the wording of direction, be only exemplary, what one of ordinary skill in the art will appreciate that is, according to the layout of the each several part in biological filter of the present utility model and functional zone or functional layer, can be other suitable form, as long as these are arranged and form does not depart from spirit of the present utility model and purport.
In order to overcome the problems of the prior art, the utility model proposes a kind of BAF.
As shown in Figure 2, this figure schematically shows according to the structure of the BAF 200 of an embodiment of the present utility model.In BAF 200, in the pond body of BAF, be furnished with successively: filter material layer 21, is furnished with filtrate in this filter material layer 21; Filtrate in filter material layer is carried out to the supporting plate 22 of support, this supporting plate next-door neighbour filter material layer 21 is arranged; For the filter block layer 23 of distribute water and air, this filter block layer 23 is comprised of the polylith filter block 25 tiling and is close to described supporting plate 22 to be arranged.
In the embodiment shown in Fig. 2, filter material layer 21, supporting plate 22 and filter block layer 23 are close to and arrange successively from top to bottom, and the pond base fabric of the wherein said filter block layer 23 described pond of next-door neighbour body is put.
Preferably, the filter block 25 being laid in filter block layer 23 can have the double cavity structure that can carry out twice distribute water and air.
The double cavity structure of filter block 23 can be the double cavity structure of common filter block in this area.Certainly, other double cavity structure that can realize twice distribute water and air goes for the utility model too.
Filter block 25 has the gap at top.When BAF 200 is carried out distribute water and air, enter the water of BAF 200 gentle to the space discharge that makes progress, thereby can realize better distribute water and air.
For example, in one embodiment, the distribution density in the space at the filter block top of biological filter is 120～300/m
2, be preferably 240/m
2.
According in BAF of the present utility model, filter block 25 can be rectangular parallelepiped, and preferably this filter block is of a size of: length * wide * height=(500～1200) * (200～300) * (200～300) mm.
In BAF 200 shown in the figure, the bottom of filter block 25 in whole BAF, backwash gas, water enter filter block after twice water and air distributing simultaneously, are discharged uniformly by filter block head room clearance.
Certainly, filter block 25 can be also the filter block of other form, as long as these filter blocks can be laid on bottom, filter tank and can realize distribute water and air.
Supporting plate 22 can adopt high density polyethylene(HDPE) to make, and be can water-permeable and air permeable sheet material.
The height of supporting plate 22 is 15-35mm, is preferably 20mm.And the length and width size of supporting plate is identical with filter block layer 23.
In conjunction with the explanation of the present utility model and the practice that disclose here, other embodiment of the present utility model are easy to expect and understand for those skilled in the art.Illustrate with embodiment and be only considered to exemplary, true scope of the present utility model and purport limit by claim.
Claims (8)
1. a BAF, is characterized in that, in the pond body of described BAF, is furnished with successively:
Filter material layer, this filter material layer is furnished with filtrate;
Filtrate in filter material layer is carried out to the supporting plate of support, this supporting plate next-door neighbour filter material layer is arranged;
For the filter block layer of distribute water and air, this filter block layer is formed and is close to described supporting plate by the polylith filter block tiling to be arranged,
Wherein said filter material layer, supporting plate and filter block layer from top to bottom successively next-door neighbour arrange, and the pond base fabric that wherein said filter block layer is close to described pond body is put.
2. BAF according to claim 1, is characterized in that, described filter block has double cavity structure.
3. BAF according to claim 2, is characterized in that, described filter block has the gap at top.
4. according to the BAF one of claim 1-3 Suo Shu, it is characterized in that, the distribution density in the space at described filter block top is 120～300/m
2.
5. BAF according to claim 4, is characterized in that, the distribution density in the space at described filter block top is 240/m
2.
6. according to the BAF one of claim 1-3 Suo Shu, it is characterized in that, described filter block is rectangular parallelepiped, and this filter block is of a size of: length * wide * height=(500～1200) * (200～300) * (200～300) mm.
7. according to the BAF one of claim 1-3 Suo Shu, the height that it is characterized in that described supporting plate is 15-35mm, and the length and width size of described supporting plate is identical with described filter block layer.
8. according to the BAF one of claim 1-3 Suo Shu, it is characterized in that, in described BAF, do not comprise filter chamber, also do not comprise the supporting layer being formed by cobble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181719.5U CN203794689U (en) | 2014-04-15 | 2014-04-15 | Biological aerated filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181719.5U CN203794689U (en) | 2014-04-15 | 2014-04-15 | Biological aerated filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203794689U true CN203794689U (en) | 2014-08-27 |
Family
ID=51376922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181719.5U Expired - Lifetime CN203794689U (en) | 2014-04-15 | 2014-04-15 | Biological aerated filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203794689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936141A (en) * | 2014-04-15 | 2014-07-23 | 中持（北京）水务运营有限公司 | Biological aerated filter |
-
2014
- 2014-04-15 CN CN201420181719.5U patent/CN203794689U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936141A (en) * | 2014-04-15 | 2014-07-23 | 中持（北京）水务运营有限公司 | Biological aerated filter |
| CN103936141B (en) * | 2014-04-15 | 2016-10-05 | 中持水务股份有限公司 | A kind of BAF |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHONGCHI WATER CO., LTD. Free format text: FORMER NAME: CSD (BEIJING) WATER WORKS OPERATION MANAGEMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100192, Beijing, Haidian District, Zhongguancun Dongsheng science and Technology Park (North Territory) D District 2 building Patentee after: CSD WATER SERVICE Co.,Ltd. Address before: 100192, Beijing, Haidian District, Zhongguancun Dongsheng science and Technology Park (North Territory) D District 2 building Patentee before: ZHONGCHI (BEIJING) WATER OPERATION CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |