CN107055746A - A kind of efficient back-flushing method in biofilter - Google Patents
A kind of efficient back-flushing method in biofilter Download PDFInfo
- Publication number
- CN107055746A CN107055746A CN201710308049.7A CN201710308049A CN107055746A CN 107055746 A CN107055746 A CN 107055746A CN 201710308049 A CN201710308049 A CN 201710308049A CN 107055746 A CN107055746 A CN 107055746A
- Authority
- CN
- China
- Prior art keywords
- biofilter
- backwash
- baffle plate
- discharge outlet
- water
- 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
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000000706 filtrate Substances 0.000 claims abstract description 16
- 239000000725 suspension Substances 0.000 claims abstract description 15
- 230000032683 aging Effects 0.000 claims abstract description 7
- 238000010926 purge Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 18
- 239000010865 sewage Substances 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The present invention relates to a kind of efficient back-flushing method in biofilter, including：1) the backwash discharge outlet of strip is opened up on water outlet side pool wall of the newly-built biofilter below backwash effluent weir, and sets electric drainage device；The backwash discharge outlet of rectangle or circle is being opened up on water outlet side pool wall below backwash effluent weir with biofilter, and is setting manual drainage device；2) first air purge when biofilter is backwashed, then air water are washed, then are washed；3) slowly draining baffle plate is fallen after effluent sewerage；4) backwash blower fan is opened, suspension is blown to suspended state；5) water intaking valve is opened, dirt is gone out from backwash discharge outlet, then backwash discharge outlet is closed.The present invention can clean up the aging biomembrane and suspension that are produced in biofilter on the premise of backwash water water is not increased, and thoroughly outside discharge pond；Reduce the phenomenon that biofilter is blocked, filtrate is hardened, it is to avoid filtrate, which too washes away, causes biofilm detachment, so as to improve the Biochemical Treatment of biofilter.
Description
Technical field
The present invention relates to wastewater purification technical field, more particularly to a kind of efficient back-flushing method in biofilter.
Background technology
The method that biofilter generally washed using air purge, air water, washed is backwashed, with remove aging biomembrane and
Suspension in biofilter.A large amount of suspensions are flowed out by backwash effluent weir with backwash water outlet during backwash, above filter material layer
It is used to prevent that filtrate is rushed out outside pond during backwash provided with clear water zone, the clear water zone water surface is less than backwash effluent weir；But in actual motion
In, backwash terminates still have the sewage containing a large amount of suspensions not discharge in rear clear water zone, and a portion sewage is with biofilter
Water outlet enters subsequent treatment process, and another part is deposited on above filter material layer.Biofilter subsequent technique is generally provided with filtering
System, the water outlet after backwash, which enters filtration system, can increase its facility load.If be deposited on after each backwash above filter material layer
Suspension it is excessive, can only be rinsed using a large amount of backwash waters, not only waste water resource and electric energy, while substantial amounts of backwash water
Biomembrane is washed away, biofilm detachment is easily caused, Biochemical Treatment is influenceed；Other backwash water cistern and waste discharge
Pond needs enough volumes and provides backwash water and receive backwash draining, can also increase one-time investment.
The content of the invention
, can be on the premise of backwash water water not be increased the invention provides a kind of efficient back-flushing method in biofilter
The aging biomembrane and suspension that are produced in biofilter are cleaned up, and thoroughly outside discharge pond；The blocking of reduction biofilter,
The hardened phenomenon of filtrate, it is to avoid filtrate, which too washes away, causes biofilm detachment, so as to improve the Biochemical Treatment of biofilter.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of efficient back-flushing method in biofilter, biofilter includes newly-built biofilter and with biofilter；Bag
Include following steps：
1) for newly-built biofilter, along length side on the water outlet side pool wall below backwash effluent weir, above filter material layer
To opening up the backwash discharge outlet of strip, and set electric drainage device；Draining baffle plate, the row are provided with the electric drainage device
Water baffle plate is adjacent on pool wall and covers backwash discharge outlet, and draining baffle plate can be lifted under the driving of drainage driving device, real
The closing of existing backwash discharge outlet or opening；
For with biofilter, opened up on the water outlet side pool wall below backwash effluent weir, above filter material layer rectangle or
Circular backwash discharge outlet, and set manual drainage device；Draining baffle plate, draining baffle plate patch are provided with the manual drainage device
Tightly on pool wall and backwash discharge outlet is covered, and closing or the opening of backwash discharge outlet can be realized after hand-operated lifting；
2) first air purge, loose by filtrate when biofilter is backwashed；Air water is washed again, and the biomembrane of aging is rushed from filtrate
Elution falls；Wash again, the suspension in biofilter is gone out into biofilter by backwash effluent weir；
3) after backwash effluent weir effluent sewerage, draining baffle plate is slowly fallen, from up to down will be clear by backwash discharge outlet
Sewage in pool is further vented；
4) when the water level decreasing in biofilter can not extremely flow automatically discharge, open in backwash blower fan, biofilter everywhere
Bubble uniformly closes backwash blower fan afterwards, and suspension is blown into suspended state using bubble；
5) water intaking valve of biofilter is opened, is gone out the dirt in biofilter from backwash discharge outlet using water inlet；Treat
After water outlet is clean, it is lifted up draining baffle plate and closes backwash discharge outlet；Backwash process terminates, and biofilter is recovered at normal water
Reason state.
The height of the strip backwash discharge outlet be not less than 100mm, its lower edge apart from the top 200 of filter material layer~
300mm。
The electric drainage device is made up of Electrohydraulic push rod and draining baffle plate；The both sides of draining baffle plate set electro-hydraulic push away respectively
Bar, and 2 Electrohydraulic push rod synchronization actions.
In the newly-built biofilter slideway, draining are vertically set on the pool wall of correspondence draining baffle plate one or both sides
Baffle plate one or both sides are slidably matched with slideway.
The draining baffle plate is made using stainless-steel sheet.
The length of side or diameter of the rectangle or circular backwash discharge outlet are not less than 200mm, and its lower edge is apart from the top of filter material layer
200~300mm of portion.
The manual drainage device is made up of hand hoisting bar and draining baffle plate；By swollen on the pool wall of draining baffle plate both sides
Swollen bolt ground way, both sides and the slideway of draining baffle plate are slidably matched.
Compared with prior art, the beneficial effects of the invention are as follows：
1) can be on the premise of backwash water water not be increased by the aging biomembrane and suspension that are produced in biofilter
Clean up, and thoroughly outside discharge pond；
2) phenomenon that biofilter is blocked, filtrate is hardened is reduced, it is to avoid filtrate, which too washes away, causes biofilm detachment, so that
Improve the Biochemical Treatment of biofilter；
3) backwashing water water consumption is saved, operating cost is saved, does not increase backwash water cistern and waste discharge pool volume,
Reduce one-time investment.
Brief description of the drawings
Fig. 1 is the structural representation one (front view) of newly-built biofilter of the present invention and electric drainage device.
Fig. 2 is the structural representation two (top view) of newly-built biofilter of the present invention and electric drainage device.
Fig. 3 is the structural representation one (front view) of the present invention with biofilter and manual drainage device.
Fig. 4 is the structural representation two (top view) of the present invention with biofilter and manual drainage device.
In figure：1. the draining baffle plate of biofilter 2. filter material layer, 3. clear water zone 4. backwash discharge outlet, 5. Electrohydraulic push rod 6.
7.. the hand hoisting bar of 8. backwash effluent weir of slideway 9.
Embodiment
The embodiment to the present invention is described further below in conjunction with the accompanying drawings：
The efficient back-flushing method in a kind of biofilter of the present invention, biofilter 1 be respectively newly-built biofilter or
Biofilter；Comprise the following steps：
1) as shown in Figure 1 and Figure 2, for newly-built biofilter 1, going out below backwash effluent weir 8, above filter material layer 2
The backwash discharge outlet 4 of strip is opened up on the pool wall of water side along its length, and sets electric drainage device；The electric drainage device
In be provided with draining baffle plate 6, the draining baffle plate 6 is adjacent on pool wall and covers backwash discharge outlet 4, and draining baffle plate 6 drives in draining
It can be lifted under the driving of device, realize closing or the opening of backwash discharge outlet 4；
As shown in Figure 3, Figure 4, for biofilter 1, below backwash effluent weir 8, the water outlet of the top of filter material layer 2
The backwash discharge outlet 4 of rectangle or circle is opened up on the pool wall of side, and sets manual drainage device；Provided with row in the manual drainage device
Water baffle plate 6, the draining baffle plate 6 is adjacent on pool wall and covers backwash discharge outlet 4, and can realize that backwash is arranged after hand-operated lifting
The closing at the mouth of a river 4 or opening；
2) first air purge, loose by filtrate when biofilter 1 is backwashed；Air water is washed again, by the biomembrane of aging from filtrate
Flushing comes off；Wash again, the suspension in biofilter 1 is gone out into biofilter 1 by backwash effluent weir 8；
3) after the effluent sewerage of backwash effluent weir 8, draining baffle plate 6 is slowly fallen, from up to down will by backwash discharge outlet 4
Sewage in clear water zone 3 is further vented；
4) discharged or suspension obvious sediment in biofilter 1 when the water level decreasing in biofilter 1 can not extremely flow automatically
When, backwash blower fan is opened, and bubble uniformly closes backwash blower fan afterwards everywhere in biofilter 1, suspension is blown to using bubble outstanding
Floating state；
5) water intaking valve of biofilter 1 is opened, is gone out the dirt in biofilter 1 from backwash discharge outlet 4 using water inlet；
After water outlet is clean, it is lifted up draining baffle plate 6 and closes backwash discharge outlet 4；Backwash process terminates, and biofilter 1 is recovered just
Ordinary water handles state.
The height of the strip backwash discharge outlet 4 is not less than 100mm, its lower edge apart from the top of filter material layer 2 200~
300mm。
The electric drainage device is made up of Electrohydraulic push rod 5 and draining baffle plate 6；The both sides of draining baffle plate 6 set electro-hydraulic respectively
Push rod 5, and 2 synchronization actions of Electrohydraulic push rod 5.
In the newly-built biofilter 1 slideway is vertically set on the pool wall of the one or both sides of correspondence draining baffle plate 6
7, the one or both sides of draining baffle plate 6 are slidably matched with slideway 7.
The draining baffle plate 6 is made using stainless-steel sheet.
The length of side or diameter of the rectangle or circular backwash discharge outlet are not less than 200mm, and its lower edge is apart from the top of filter material layer 2
200~300mm of portion.
The manual drainage device is made up of hand hoisting bar 9 and draining baffle plate 6；Lead on the pool wall of the both sides of draining baffle plate 6
Expansion bolt ground way 7 is crossed, both sides and the slideway 7 of draining baffle plate 6 are slidably matched.
In the present invention, the opening size of backwash discharge outlet 4 is determined according to the sewage efflux time of clear water zone 3 of setting, instead
It is to prevent filtrate from being flowed out with current that discharge outlet 4, which is washed, higher than filter material layer 2.Draining baffle plate 6 is arranged on the interior of backwash discharge outlet 4
Side, for preventing that filtrate is rushed out from backwash discharge outlet 4 during backwash, the surrounding of draining baffle plate 6 exceeds backwash discharge outlet 4 one
Segment distance, prevents filtrate from spilling.
From backwash 4 sewer of discharge outlet when, draining baffle plate 6 progressively declines from top to bottom, prevent flow rate of water flow cross senior general filter
Material is gone out；Slideway 7, which is used to provide draining baffle plate 6, supports and can play position-limiting action.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. a kind of efficient back-flushing method in biofilter, biofilter includes newly-built biofilter and with biofilter；It is special
Levy and be, comprise the following steps：
1) for newly-built biofilter, opened along its length on the water outlet side pool wall below backwash effluent weir, above filter material layer
If the backwash discharge outlet of strip, and set electric drainage device；Draining baffle plate, draining gear are provided with the electric drainage device
Plate is adjacent on pool wall and covers backwash discharge outlet, and draining baffle plate can be lifted under the driving of drainage driving device, is realized anti-
Wash closing or the opening of discharge outlet；
For with biofilter, rectangle or circle are opened up on the water outlet side pool wall below backwash effluent weir, above filter material layer
Backwash discharge outlet, and set manual drainage device；Draining baffle plate is provided with the manual drainage device, the draining baffle plate is adjacent to
On pool wall and backwash discharge outlet is covered, and closing or the opening of backwash discharge outlet can be realized after hand-operated lifting；
2) first air purge, loose by filtrate when biofilter is backwashed；Air water is washed again, and the biomembrane of aging is rinsed into de- from filtrate
Fall；Wash again, the suspension in biofilter is gone out into biofilter by backwash effluent weir；
3) after backwash effluent weir effluent sewerage, draining baffle plate is slowly fallen, by backwash discharge outlet from up to down by clear water zone
In sewage be further vented；
4) when the water level decreasing in biofilter can not extremely flow automatically discharge, backwash blower fan is opened, bubble everywhere in biofilter
Backwash blower fan is closed after uniform, suspension is blown to suspended state using bubble；
5) water intaking valve of biofilter is opened, is gone out the dirt in biofilter from backwash discharge outlet using water inlet；Treat water outlet
After clean, it is lifted up draining baffle plate and closes backwash discharge outlet；Backwash process terminates, and normal water process shape is recovered in biofilter
State.
2. a kind of efficient back-flushing method in biofilter according to claim 1, it is characterised in that the strip backwash
The height of discharge outlet is not less than 100mm, and its lower edge is apart from 200~300mm at the top of filter material layer.
3. a kind of efficient back-flushing method in biofilter according to claim 1, it is characterised in that the electric draining dress
Put and be made up of Electrohydraulic push rod and draining baffle plate；The both sides of draining baffle plate set Electrohydraulic push rod respectively, and 2 Electrohydraulic push rods are synchronously dynamic
Make.
4. a kind of efficient back-flushing method in biofilter according to claim 1, it is characterised in that the newly-built biological filter
Slideway is vertically set in pond on the pool wall of correspondence draining baffle plate one or both sides, draining baffle plate one or both sides are slided with slideway
It is dynamic to coordinate.
5. the efficient back-flushing method in a kind of biofilter according to claim 1, it is characterised in that the draining baffle plate is adopted
Made of stainless-steel sheet.
6. the efficient back-flushing method in a kind of biofilter according to claim 1, it is characterised in that the rectangle or circle
The length of side or diameter of backwash discharge outlet are not less than 200mm, top 200~300mm of its lower edge apart from filter material layer.
7. a kind of efficient back-flushing method in biofilter according to claim 1, it is characterised in that the manual drainage dress
Put and be made up of hand hoisting bar and draining baffle plate；By expansion bolt ground way on the pool wall of draining baffle plate both sides, draining gear
The both sides of plate are slidably matched with slideway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710308049.7A CN107055746A (en) | 2017-05-04 | 2017-05-04 | A kind of efficient back-flushing method in biofilter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710308049.7A CN107055746A (en) | 2017-05-04 | 2017-05-04 | A kind of efficient back-flushing method in biofilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107055746A true CN107055746A (en) | 2017-08-18 |
Family
ID=59597340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710308049.7A Pending CN107055746A (en) | 2017-05-04 | 2017-05-04 | A kind of efficient back-flushing method in biofilter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107055746A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108503018A (en) * | 2018-05-22 | 2018-09-07 | 湖南深拓智能设备股份有限公司 | The treatment process and device in a kind of submergence lifting circulating biological membrane filtration pond |
| CN110627199A (en) * | 2018-06-25 | 2019-12-31 | 光大水务科技发展（南京）有限公司 | Method for intelligently controlling backwashing strength of biological aerated filter |
| CN116216920A (en) * | 2023-05-09 | 2023-06-06 | 广东景天环境科技股份有限公司 | Breed effluent treatment plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203400540U (en) * | 2013-08-08 | 2014-01-22 | 深圳市瑞源环境科技有限公司 | Turnover plate filter tank with upward flow function |
| CN104817167A (en) * | 2015-04-13 | 2015-08-05 | 安徽华骐环保科技股份有限公司 | Water-level descending backwashing method for up-flow biological aerated filter |
| CN205294949U (en) * | 2016-01-11 | 2016-06-08 | 广东莞绿环保工程有限公司 | High -efficient bological aerated filter |
-
2017
- 2017-05-04 CN CN201710308049.7A patent/CN107055746A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203400540U (en) * | 2013-08-08 | 2014-01-22 | 深圳市瑞源环境科技有限公司 | Turnover plate filter tank with upward flow function |
| CN104817167A (en) * | 2015-04-13 | 2015-08-05 | 安徽华骐环保科技股份有限公司 | Water-level descending backwashing method for up-flow biological aerated filter |
| CN205294949U (en) * | 2016-01-11 | 2016-06-08 | 广东莞绿环保工程有限公司 | High -efficient bological aerated filter |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108503018A (en) * | 2018-05-22 | 2018-09-07 | 湖南深拓智能设备股份有限公司 | The treatment process and device in a kind of submergence lifting circulating biological membrane filtration pond |
| WO2019222938A1 (en) * | 2018-05-22 | 2019-11-28 | 湖南深拓智能设备股份有限公司 | Treatment process and apparatus of submerged lifting circulation type biological membrane filter tank |
| CN108503018B (en) * | 2018-05-22 | 2020-04-10 | 湖南深拓智能设备股份有限公司 | Treatment process and device for immersed lifting circulating type biological membrane filter |
| US11420888B2 (en) | 2018-05-22 | 2022-08-23 | Hunan Scientop Automatic Equipment Shares Co. Ltd | Treatment process and device for submerged lifting circulation type bio-membrane filter |
| CN110627199A (en) * | 2018-06-25 | 2019-12-31 | 光大水务科技发展（南京）有限公司 | Method for intelligently controlling backwashing strength of biological aerated filter |
| CN116216920A (en) * | 2023-05-09 | 2023-06-06 | 广东景天环境科技股份有限公司 | Breed effluent treatment plant |
| CN116216920B (en) * | 2023-05-09 | 2023-08-18 | 广东景天环境科技股份有限公司 | Breed effluent treatment plant |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170818 |