CN1119961A - Reverse washing method of water processing apparatus using floating filtering material - Google Patents
Reverse washing method of water processing apparatus using floating filtering material Download PDFInfo
- Publication number
- CN1119961A CN1119961A CN95109613A CN95109613A CN1119961A CN 1119961 A CN1119961 A CN 1119961A CN 95109613 A CN95109613 A CN 95109613A CN 95109613 A CN95109613 A CN 95109613A CN 1119961 A CN1119961 A CN 1119961A
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- China
- Prior art keywords
- filtering material
- water
- floating
- filter course
- filter layer
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- BNTHCCKWMAYYPX-UHFFFAOYSA-N CCC(C)N1C(C)CCC1 Chemical compound CCC(C)N1C(C)CCC1 BNTHCCKWMAYYPX-UHFFFAOYSA-N 0.000 description 1
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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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention provides a backwashing method of a water disposal device which can uniformly mix and clean the full area of a filter layer by floating filter material without damaging the filter material. The method is the backwashing method of the water disposal device which forms a floating filter layer by filling the filter material at the lower side of a filter material loss prevention belt which divides the interior of a disposal trough into an upper part and a lower part; the water level is reduced to the lower side of the filter material loss belt and air is discharged from the underside of the floating filter layer to liquefy the floating filter layer, thus removing the obturator in the floating filter layer. The full area of the filter layer is uniform and the obturator in the filter layer is removed by right amount; the filtration time after backwashing is short and the disposal efficiency is high.
Description
The invention relates to the inside of treatment trough is divided into up and down filtering material run off prevent with below the filling floating filtering material be formed with the reverse washing method of the water treatment facilities of the filter course that swims.
Now, using the floating filtering material that makes with plastic foam material etc. to carry out the secondary filter method of water treatment and biomembrane facture etc. is adopted more and more widely.The secondary filter method be in the filter course of filling floating filtering material with the SS in the former water (suspended solid) capture filter, and the biomembrane facture is to decompose organic matter in the former water by adhering to propagation in the microorganism on filtering material surface.With the exception of this, as the facture of using floating filtering material, also have have oil loving filtering material surface, with the floating water-oil separating method of separating that goes up of oil content the oil droplet aggegation coarse in the former water.
Water treatment facilities like this along with SS in the former water of handling that carries out being caught in the filter course and the biomembrane that increased can block the space between the filtering material gradually, reduces filter efficiency.For avoiding blocking, generally the space rate is increased to about 98%, its result has limited disposal ability.As the space rate being reduced to 50-80% and desire when improving disposal ability is necessary to carry out suitable back washing to remove forming the obturator that blocks reason.This back washing normally flows filter course by the underneath clearancen G﹠W from filter course, utilize the interparticle conflict of filtering material obturator is peeled off and by air bubble vibration filtering layer obturator from the filtering material particle shake fall after, water cleans.
But, the same with the occasion of using inanimate matter filtering materials such as anthracite material, this below filter course, deflating simultaneously and the reverse washing method of the past of water, because the filter course universe can not be carried out effectively, homogeneous clean, its result not only causes obstruction prematurely and increases the back washing frequency, and back washing water yield rate (the back washing water yield accounts for the ratio of the processed former water yield) reaches 30%, reduces because of a large amount of back washing water of needs makes disposal ability.
The method that the also useful mixer agitation and filtration layer that is arranged on filter course middle part or bottom is removed obturator, but the shortcoming that makes the filtering material breakage is arranged.Especially, can not reach and clean effect fully resembling in the device of filter course up to 2.5-3.5m of biomembrane handling.In addition, even filter course below 1m, when processing contains the high viscosity waste water of vegetable oil, stirs because of the filter course universe can not reach equably, the increase of back washing frequency and the decline of disposal ability have been caused.For this reason, fail to reach practicability with the reverse washing method of agitating device.
The present invention is for the shortcoming that solves this prior art is provided with, and its main purpose provides the reverse washing method that not damaged filtering material can stir the water treatment facilities of the use floating filtering material of cleaning the filter course universe equably.
In order to achieve the above object, the invention provides a kind of water treatment facilities that uses floating filtering material, it is characterized in that, it be a kind of the inside of treatment trough is divided into up and down filtering material run off prevent with downside filling floating filtering material form the reverse washing method of the water treatment facilities of the filter course that swims, wherein, water level is reduced to the downside that above-mentioned filtering material runs off and is with, deflating below the above-mentioned filter course that swims flows this filter course that swims, and the obturator in this filter course that swims is removed.
Like this, by water level is reduced to filtering material run off prevent with downside, obtain openly above the floating filtering material that is swimming, making moves up is subjected to filtering material always and runs off and prevent that floating filtering material with the top of restriction from becoming and be easy to move.When below the filter course that swims, deflating like this, the floating filtering material of the filter course universe of swimming just can shake equably, can not damaged filtering material and will peel off attached to the obturator of the biomembrane on floating filtering material surface etc.
Embodiment
Below, be applicable to embodiments of the invention by the accompanying drawing detailed description.Embodiment 1
Fig. 1 represents an example of the treating apparatus of the reverse washing method implemented according to the present invention.This treating apparatus is, use the biomembrane treating apparatus of the mode that flows upward of floating filtering material, the former flow inlet 2 of pending former water below the comparison that is arranged on treatment trough 1 is imported into treatment trough 1, is cleaned processing above when the type of flow flows through the inside of the filter course 3 that swims.Flowing through the processing water that swims filter course 3 and arrive its upside is sent outside the device from the processing water export 4 that is arranged on that.
The swim floating filtering material 7 of 3 li of filter courses, being filled in is run off by paired up and down filtering material prevents to cut off and in the space that forms with 56, floats to top filtering material loss on it and prevents restriction with 5.Swim filter course 3 and following filtering material runs off and prevents spatial margin with remaining with defined between 6.Floating filtering material 7 is coccoids of plastic foam material etc., adheres on the surface breeding to be membranaceous microorganism, and the SS and the dissolubility composition that can be captured by floating filtering material 7 are decomposed by its surperficial biomembrane.
Base plate one side of filter course 3 of swimming is disposing snorkel 9, above it with emitting the shower nozzle of the air of sending here from air blast 8 for carrying out aeration and back washing.In addition, the bottom of treatment trough 1 is provided with the outer bottom outlet 10 of excess sludge discharger that deposition gets off when being used for back washing.
At first as Fig. 1 (a) is represented, by bottom outlet 10 water in the treatment trough 1 is discharged and to make water level be reduced to filtering material to run off and prevent downside when carrying out back washing with 5.Then as (b) is represented, starts air blast 8 and be stripped from from the deflate biomembrane that makes filter course 3 liquidations of swimming, floating filtering material 7 surfaces etc. of shower nozzle.Like this, have 1/3 microorganism also to remain on the floating filtering material 7 approximately, all the other about 2/3 as excess sludge as described later like that by outside the back washing water discharge device.
The part of the mud of being made up of the biomembrane that strips down etc. is after placing certain hour, and precipitating as (c) is represented is piled up in the bottom and is discharged from from bottom outlet 10.Last as (d) is represented, send into processing water in the treatment trough (not shown), will be trapped in that mud between the floating filtering material 7 washes and with water pump 11 by the 4 usefulness back washings of processing water export from 10 discharges of bottom outlet.
For the effect to this reverse washing method is confirmed,, test on the cylindric treatment trough device of the high 6m of diameter 2m being formed with the filter course 3 that swims of thick 3m.At first water level being reduced to runs off from the filtering material of upside prevents with about 30cm below 5, use air output 3.2m
3/ minute, discharge pressure 5, the air blast of 000mmAq is with 3.2m
3/ minute speed from shower nozzle air was emitted 5 minutes, stir the lautertuns 3 that swims.Placed then 2 minutes, the mud that strips down and be piled up on treatment trough 1 bottom from floating filtering material 7 is discharged from from bottom outlet 10.Then, use discharge rate 65m
3/ hour, the back washing water pump 11 of lift 10m will be handled water with 65m from the top of treatment trough 1
3The speed of/H is sent into 5-10 minutes to clean floating filtering material 7, cleans 5 minutes to the type of flow more than following, and back washing ends.
Like this, the SS concentration of whole back washing drainings of discharge is 1, and 800mg/l compares with the 950mg/l of the reverse washing method of the agitating device of configuration swivel plate in filter course, removes sludge quantity and is about 2 times.In addition, after the back washing immediately when having shown with common running same BODCOD remove rate, the weak point of back washing transit time has been obtained affirmation.
The back washing water yield of using is for handling 5% of the water yield.When not injecting chemical assistants such as agglutinant, the back washing draining through 30 minutes simple sedimentation after the overwhelming majority of microorganism agglomerate obtained sedimentation, because of the supernatant water on its top 50% has been sent back to former water side, its final back washing water yield rate is 2.5%.Embodiment 2
Fig. 2 is the another example of the device of the reverse washing method implemented according to the present invention, and the process of back washing has been represented in segmentation.This treating apparatus and the embodiment 1 the same biomembrane treating apparatus that is to use floating filtering material, different is following to the type of flow.The former flow inlet 22 of processed former water above the comparison that is arranged on treatment trough 21 is imported into treatment trough 21, below flows through the filter course 23 of swimming to the type of flow and is cleaned processing when inner.Flowing through the processing water that swims filter course 23 and arrive below it is sent outside the device from the processing water export 24 that is arranged on the there.
With Fig. 1 represent the same substantially, floating filtering material 7 in fillings in the filter course 23 of swimming.Base plate one side of filter course 23 of swimming is disposing the snorkel 9 with the shower nozzle of emitting the air of sending here from air blast 8.In addition, be provided with oil drain out 25 above the treatment trough 21, the bottom is provided with the outer bottom outlet 26 of excess sludge discharger that deposition gets off when being used for back washing.
At first as Fig. 2 (a) is represented, by bottom outlet 26 water in the groove is discharged and to make water level be reduced to filtering material to run off and prevent downside when carrying out back washing with 5.Then as (b) is represented, starts air blast 8 and deflate from shower nozzle and make the filter course 23 that swims mobile.As (c) is represented, places the sludge settling that strips down from floating filtering material 7 behind the certain hour and get off to be piled up in the bottom, and be discharged from then from bottom outlet 26.Last as (d) is represented, send into the mud of handling water, will being trapped between the floating filtering material 7 with water pump 11 and wash and discharge from top outlet 27.
The reverse washing method of only having represented to use the biomembrane treating apparatus of floating filtering material to use in the present embodiment, but the present invention is not limited only to the biomembrane treating apparatus also is applicable to the secondary filter device that uses floating filtering material and oily-water seperating equipment etc.
As above illustrated, the reverse washing method of the water treatment facilities of use floating filtering material of the present invention is because can be with filter course universe homogeneous and remove obturator in right amount in filter course, and the transit time after the back washing is short, the treatment effeciency height.For example, the residual quantity that in filter course, keeps, the residual amount of microorganism is about 1/3 during with the biomembrane facture, the residual amount of oil is about 1/3 during the water-oil separating method, the residual amount of SS is about 1/3 during the secondary filter method, can not cause detergent power reduction and immediately with common ability entry into service.
The excess sludge of the biomembrane facture microorganism agglomerate comparatively robust of just discharging particularly by back washing, when handling, the simple sedimentation that chemical assistant does not have an injection obtains sedimentation after 30 minutes, by sending the supernatant water on top back to former tank, can be reduced to below 3% by 30% of the past back washing water yield rate.
Fig. 1
Be made of a, b, c and d, segmentation represents to implement the procedure chart of reverse washing method of the present invention.
Fig. 2
Constitute the procedure chart when segmentation represents that other water treatment facilities are suitable for reverse washing method of the present invention by a, b, c and d.Symbol description is as follows among the figure.
Swim filter course 4 of 1 treatment trough, 2 former flow inlets 3 is handled water exports 56 filtering materials and is run off and prevent to be with 7 floating filtering materials, 8 air blasts, 9 snorkels, 10 bottom outlets, 11 back washing water pumps, 21 treatment troughs, 22 former flow inlets 23 filter course 24 that swims to handle water exports 25 oil drain outs 26 bottom outlets 27 top outlets
Claims (1)
1. use the reverse washing method of the water treatment facilities of floating filtering material, it is characterized in that, the inside of treatment trough is divided into up and down filtering material run off prevent with downside filling floating filtering material and be formed with the reverse washing method of the water treatment facilities of the filter course that swims, wherein water level is reduced to the downside that above-mentioned filtering material runs off and is with, deflating from the below of the above-mentioned filter course that swims makes this filter course liquidation of swimming, and the obturator in this filter course that swims is removed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP213193/94 | 1994-08-15 | ||
| JP6213193A JPH0857465A (en) | 1994-08-15 | 1994-08-15 | Backwashing of water treatment apparatus using floating filter material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1119961A true CN1119961A (en) | 1996-04-10 |
| CN1036975C CN1036975C (en) | 1998-01-14 |
Family
ID=16635084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95109613A Expired - Fee Related CN1036975C (en) | 1994-08-15 | 1995-07-26 | Reverse washing method of water processing apparatus using floating filtering material |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH0857465A (en) |
| KR (1) | KR0166421B1 (en) |
| CN (1) | CN1036975C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256861A (en) * | 2015-11-05 | 2016-01-20 | 南充市大禹水务科技有限责任公司 | Constant voltage equipment for water taking and water supply |
| CN105664553A (en) * | 2016-04-13 | 2016-06-15 | 胡小弟 | Filtration device |
| CN108348823A (en) * | 2015-11-04 | 2018-07-31 | 苏伊士水务工程公司 | It synthesizes compressible medium and filters backwash process |
| CN108479190A (en) * | 2018-06-13 | 2018-09-04 | 南京圣卡孚科技有限公司 | A kind of continuous floating bed filtering settled sand filter unit and application method |
| CN111847687A (en) * | 2019-08-30 | 2020-10-30 | 周建萍 | Oil-water separation and recovery equipment for catering industry |
| CN112169387A (en) * | 2020-11-12 | 2021-01-05 | 湖南澳维环保科技有限公司 | Upflow filter and filtering method |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10337585A (en) * | 1997-06-05 | 1998-12-22 | Nippon Steel Corp | Method for back wash of surfacing filter medium |
| JP3649382B2 (en) * | 2000-04-11 | 2005-05-18 | 株式会社石垣 | Filtration equipment using floating media |
| KR100712643B1 (en) * | 2004-12-28 | 2007-05-02 | 주식회사 태영건설 | Apparatus for treating organic material and nitrogen of wastewater by using air floatation type biofilter, and treatment method using the same |
| JP4674188B2 (en) * | 2006-06-23 | 2011-04-20 | メタウォーター株式会社 | Primary treatment method for combined sewage |
| KR100724806B1 (en) * | 2006-07-20 | 2007-06-21 | 대한민국 | Flow filter tank |
| TWI407996B (en) * | 2010-06-21 | 2013-09-11 | Kuei Lin Tsai | Upward-flow type float-filter-backwashing method and a system thereof |
| JP6049005B2 (en) * | 2012-05-31 | 2016-12-21 | 鎌田バイオ・エンジニアリング株式会社 | Filtration device, filtration method thereof and backwashing method of filter medium |
| CN109231446B (en) * | 2018-10-11 | 2024-05-31 | 北京城市排水集团有限责任公司 | Device for preventing filter material leakage of denitrification biological filter and operation method thereof |
| JP6872282B1 (en) * | 2020-06-01 | 2021-05-19 | 日本施設株式会社 | Filtration device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5126042A (en) * | 1991-10-31 | 1992-06-30 | Malone Ronald F | Floating media biofilter |
| US5232586A (en) * | 1992-09-25 | 1993-08-03 | Malone Ronald F | Floating media hourglass biofilter |
| JP2695624B2 (en) * | 1994-04-26 | 1998-01-14 | 東洋エンジニアリング株式会社 | How to clean floating filter media |
-
1994
- 1994-08-15 JP JP6213193A patent/JPH0857465A/en active Pending
-
1995
- 1995-07-18 KR KR1019950021078A patent/KR0166421B1/en not_active IP Right Cessation
- 1995-07-26 CN CN95109613A patent/CN1036975C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108348823A (en) * | 2015-11-04 | 2018-07-31 | 苏伊士水务工程公司 | It synthesizes compressible medium and filters backwash process |
| CN108348823B (en) * | 2015-11-04 | 2020-10-23 | 苏伊士水务工程公司 | Synthetic compressible media filtration backwash process |
| CN105256861A (en) * | 2015-11-05 | 2016-01-20 | 南充市大禹水务科技有限责任公司 | Constant voltage equipment for water taking and water supply |
| CN105664553A (en) * | 2016-04-13 | 2016-06-15 | 胡小弟 | Filtration device |
| CN108479190A (en) * | 2018-06-13 | 2018-09-04 | 南京圣卡孚科技有限公司 | A kind of continuous floating bed filtering settled sand filter unit and application method |
| CN111847687A (en) * | 2019-08-30 | 2020-10-30 | 周建萍 | Oil-water separation and recovery equipment for catering industry |
| CN111847687B (en) * | 2019-08-30 | 2022-08-12 | 苏州双福智能科技有限公司 | Oil-water separation and recovery equipment for catering industry |
| CN112169387A (en) * | 2020-11-12 | 2021-01-05 | 湖南澳维环保科技有限公司 | Upflow filter and filtering method |
| CN112169387B (en) * | 2020-11-12 | 2023-10-31 | 湖南澳维科技股份有限公司 | Filtration method of upflow filter |
Also Published As
| Publication number | Publication date |
|---|---|
| KR0166421B1 (en) | 1999-02-01 |
| CN1036975C (en) | 1998-01-14 |
| JPH0857465A (en) | 1996-03-05 |
| KR960007471A (en) | 1996-03-22 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19980114 Termination date: 20140726 |
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| EXPY | Termination of patent right or utility model |