CN104326623A - Water discharging and filtering device of sedimentation tank and filtering method thereof - Google Patents
Water discharging and filtering device of sedimentation tank and filtering method thereof Download PDFInfo
- Publication number
- CN104326623A CN104326623A CN201410556085.1A CN201410556085A CN104326623A CN 104326623 A CN104326623 A CN 104326623A CN 201410556085 A CN201410556085 A CN 201410556085A CN 104326623 A CN104326623 A CN 104326623A
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- CN
- China
- Prior art keywords
- filter
- settling tank
- effluent trough
- effluent
- mud
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Abstract
The invention discloses a water discharging and filtering device of a sedimentation tank. The water discharging and filtering device of the sedimentation tank comprises a water discharging trough of the sedimentation tank and is characterized in that a filter plate is arranged in the water discharging trough and divides the water discharging trough into a water discharging trough before filtering and a water discharging trough after filtering, the water discharging trough after filtering is provided with a branched water discharging pipe to be connected with a main water discharging pipe, a sludge discharge device is arranged in the water discharging trough before filtering, and the filter plate is provided with a cleaning device close to one side of the water discharging trough before filtering. According to the water discharging and filtering device of the sedimentation tank, the filter plate is arranged in the water discharging trough of the secondary sedimentation tank, the filtering process of the deep sewage treatment is carried out in the secondary sedimentation directly, the filtering basin is not required to be arranged in the follow-up link of sewage treatment, the sewage plant occupied area can be saved, the engineering investment cost and the operating cost of the deep treatment can be greatly saved, sludge intercepted by the filter plate returns to a water inflowing guide barrel of the secondary sedimentation tank and is settled again, the influent load of the sewage plant is not increased and the efficiency of the sewage treatment system can be improved.
Description
Technical field
The present invention relates to sewage treatment area, be specifically related to a kind of settling tank effluent water filtering device and filter method thereof.
Background technology
In sewage disposal, second pond is the important component part of Sludge System, and its Main Function is mixed solution clarification, concentrated and activity sludge reflux.Second pond can reach more than 99% to the removal efficiency of SS, and its water outlet SS is generally 20 ~ 30mg/L, but cannot meet the emission request (SS≤10mg/L) of GB18918-2002 " urban wastewater treatment firm pollutant emission standard " one-level A standard.Because flocs unit residual in secondary clarifier effluent has good filtrability, usually adopt filtration process as subsequent disposal to remove the biological floe mud in secondary clarifier effluent, make water outlet SS≤10mg/L after filter, reach the one-level A standard of GB18918-2002.Filter tank conventional at present comprises sand filter, fibre filter and turntable filter chamber etc., in filtration procedure, biological floes easily at filter material layer surface and inner formation one deck filter membrane, causes head progressively to increase, cause fluidised form and resistance coefficient to change simultaneously, cause water head loss by filtration to increase.Because current scour shearing force in filtering layer increases, easily make impurity penetrate filtering layer, filtering water is deteriorated, and for recovering filtering layer filtration capacity, the dirt retained in eccysis filtering layer, need rinse filter tank.The floor space that filter tank can increase Sewage Plant is set separately; Increase the head loss of sewage disposal; Back flushing needs larger power consumption frequently; A large amount of backwashing waters is disposed to plant area's waste pipe and is back to the influent load that Sewage Plant feed-water end can increase Sewage Plant.In a word, filter tank is set separately and can increases Sewage Plant engineering construction investment, operation cost and maintenance cost.
Summary of the invention
The object of this invention is to provide a kind of settling tank effluent water filtering device, substitute traditional filter tank, make settling tank have the function of filtration concurrently, thus effectively avoid the shortcoming in filter tank, to reduce construction, the operation and maintenance cost of Sewage Plant, and reduce Sewage Plant occupation of land.
For achieving the above object, technical scheme of the present invention is as follows: a kind of settling tank effluent water filtering device, comprise drain channel of sedimentation tank, it is characterized in that arranging filter plate in described effluent trough, by filter plate, described effluent trough is divided into the front effluent trough of filter and the rear effluent trough of filter, the rear effluent trough of filter arranges exit branch and is connected with outfall sewer, arranges mud discharging device before filter in effluent trough, and described filter plate is provided with clearing apparatus by effluent trough side before filter.Described settling tank is circular settling tank, arranges mud scraper or suction dredger in described settling tank, and described mud discharging device and clearing apparatus are fixed on the cantilever of mud scraper or suction dredger.Described settling tank is that Zhou Jinzhou goes out settling tank, and its one-sided effluent trough is divided into 2 grooves by filter plate, and 1 is effluent trough before filter, and bottom arranges equalizing port; Another 1 groove is as effluent trough after filter.Intake centered by described settling tank peripheral effluent settling tank, its bilateral effluent trough is divided into 3 grooves by two pieces of filter plates, and 2, both sides groove is as drain channel of sedimentation tank, and bottom arranges equalizing port, and middle 1 groove is effluent trough after filter.Filter plate is fixed on bottom effluent trough, arranges support pull bar as filter plate stationary installation between filter plate and filter plate.
Another object of the present invention is to provide a kind of circular settling tank to go out water filtration method, substitute traditional filter tank, make settling tank have the function of filtration concurrently, thus effectively avoid the shortcoming in filter tank, to reduce construction, the operation and maintenance cost of Sewage Plant, and reduce Sewage Plant occupation of land.
For achieving the above object, technical scheme of the present invention is as follows: a kind of circular settling tank goes out water filtration method, it is characterized in that: the method comprises the following steps: A, secondary clarifier effluent enter effluent trough by water outlet weir plate; B, utilize the filter plate installed in effluent trough to remove suspended substance in water outlet, clear liquid enters effluent trough after filter by filter plate, and mud is trapped within filter plate; C, the clearing apparatus be suspended on mud scraper or suction dredger cantilever rotate around circular settling tank, the mud that adheres on cleaning filter front filter plate, and sludgd deposition is before filter bottom effluent trough; D, absorb by being fixed on sludge drainage system on mud scraper or suction dredger cantilever the mud be deposited on before filter in effluent trough, and mud is drained into second pond water inlet guide shell or inlet channel; Mud and the second pond of E, absorption are intake after mixed solution fully mixes and carry out mud-water separation in second ponds; Water after filtering drains into outfall sewer by exit branch.
The present invention by arranging filter plate in secondary clarifier effluent groove, the filtration process in advanced treatment of wastewater is directly completed in second pond, decrease the setting in filter tank in the follow-up link of sewage disposal, Sewage Plant can be saved and take up an area, and significantly save advanced treatment construction investment and running cost; The mud that filter plate is retained down is got back to second pond water inlet guide shell and is again precipitated, and does not increase the influent load of Sewage Plant, can improve the efficiency of Sewage treatment systems.
Accompanying drawing explanation
Fig. 1 is center of the present invention water inlet peripheral effluent secondary clarifier effluent groove schematic diagram.
Fig. 2 is that Zhou Jinzhou of the present invention goes out secondary clarifier effluent groove schematic diagram.
Embodiment
As shown in the figure, below that one goes out water filtration method, comprise circular settling tank effluent trough 1, filter plate 2 and stationary installation thereof, equalizing port 3, exit branch 4, be fixed on clearing apparatus 5 on the cantilever of mud scraper (or suction dredger) and sludge drainage system 6, sludge drainage system comprises suction pipe, residual sea water pump, shore pipe, vacuum breaker, electrical control cubicles etc.Zhou Jinzhou is gone out the one-sided effluent trough of settling tank and be divided into 2 grooves by filter plate, 1 is drain channel of sedimentation tank 8, i.e. effluent trough before filter, and bottom arranges equalizing port at a certain distance; Article 1, groove is as effluent trough 9 after filter.Center water inlet peripheral effluent settling tank bilateral effluent trough is divided into 3 grooves by filter plate, and 2 limit grooves are as drain channel of sedimentation tank 8, and bottom arranges equalizing port 3 at a certain distance, and middle 1 groove is effluent trough 9 after filter.Filter plate is fixed on bottom effluent trough the method for support pull bar by arranging at a certain distance between filter plate and filter plate by center water inlet peripheral effluent settling tank.Zhou Jinzhou goes out settling tank and is fixed on bottom effluent trough by filter plate the method for support pull bar by arranging at a certain distance between filter plate and pool wall.Along the some exit branch 4 of pond week distribution, described some exit branch 4 are communicated with the bottom of effluent trough 9 after filter respectively, and the water outlet of effluent trough after filter is delivered to the outfall sewer 10 arranged for a week around pond body.
Clearing apparatus is suspended on mud scraper 7(or suction dredger) cantilever on, rotating around circular settling tank with mud scraper (or suction dredger), for cleaning the filter plate of effluent trough before filter, removing the mud be attached on filter plate.In drain channel of sedimentation tank, mud is back in second pond flooding tube by sludge drainage system.Sludge drainage system comprises suction pipe, residual sea water pump, shore pipe, vacuum breaker, electrical control cubicles etc.Sludge drainage system is fixed on the cantilever of mud scraper (or suction dredger), rotates around circular settling tank with mud scraper (or suction dredger), reaches and inhales mud effect, is regularly drained in second pond flooding tube by the accumulation mud of effluent trough before filter.
Secondary clarifier effluent enters effluent trough by water outlet weir plate; Utilize the filter plate installed in effluent trough by the suspended substance removal in water outlet, clear liquid enters the rear effluent trough of filter by filter plate, mud is trapped within the front effluent trough of filter, and be deposited on bottom effluent trough by action of gravity, remove by the rotation being suspended on the clearing apparatus on mud scraper (or suction dredger) cantilever the mud be attached on filter plate; By the sludge drainage system be fixed on the cantilever of mud scraper (or suction dredger), mud in effluent trough is drained into second pond flooding tube.
Secondary sedimentation tank of sewage treatment work goes out water suspension and is generally 20 ~ 30mg/L, and GB18918-2002 emission standard requires SS≤10mg/L, and arrange filter tank after second pond of being everlasting in engineering, filter fluorescence method returns Sewage treatment systems by plant area's sewer line.The present invention solves suspended substance removal problem in secondary clarifier effluent groove, does not need to arrange filter tank separately, can significantly save advanced treatment construction investment and running cost; The mud that filter plate is retained down gets back to second pond flooding tube (or inlet channel) flocculation sediment again, does not increase the influent load of Sewage Plant, can improve the efficiency of Sewage treatment systems.Compared with traditional settling tank+filter tank technique, the construction investment that the present invention can save filtering system reaches more than 50%.With 20,000 m
3the Sewage Plant of/d is example, and adopt turntable filter chamber, construction costs about 2,800,000 yuan, takes up an area about 100m
2.If directly adopt circular settling tank to go out water filtration method, the cost of effluent trough transformation+equipment is about 1,000,000 yuan, significantly reduces cost.
Claims (7)
1. a settling tank effluent water filtering device, comprise drain channel of sedimentation tank, it is characterized in that arranging filter plate in described effluent trough, by filter plate, described effluent trough is divided into the front effluent trough of filter and the rear effluent trough of filter, the rear effluent trough of filter arranges exit branch and is connected with outfall sewer, arrange mud discharging device in effluent trough before filter, described filter plate is provided with clearing apparatus by effluent trough side before filter.
2. settling tank effluent water filtering device according to claim 1, it is characterized in that described settling tank is circular settling tank, mud scraper or suction dredger are set in described settling tank, described mud discharging device and clearing apparatus are fixed on the cantilever of mud scraper or suction dredger, rotate around circular settling tank with mud scraper or suction dredger, mud drains in second pond water inlet guide shell or inlet channel by mud discharging device.
3. settling tank effluent water filtering device according to claim 2, is characterized in that described mud discharging device and the second pond of settling tank guide shell of intaking is communicated with.
4. settling tank effluent water filtering device according to claim 2, it is characterized in that described settling tank is that Zhou Jinzhou goes out settling tank, its one-sided effluent trough is divided into 2 grooves by filter plate, and 1 is effluent trough before filter, and bottom arranges equalizing port; Another 1 groove is as effluent trough after filter.
5. settling tank effluent water filtering device according to claim 2, it is characterized in that intaking centered by described settling tank peripheral effluent settling tank, its bilateral effluent trough is divided into 3 grooves by two pieces of filter plates, 2, both sides groove is as drain channel of sedimentation tank, bottom arranges equalizing port, and middle 1 groove is effluent trough after filter.
6. settling tank effluent water filtering device according to claim 1 and 2, is characterized in that filter plate is fixed on bottom effluent trough, arranges support pull bar as filter plate stationary installation between filter plate and filter plate.
7. circular settling tank goes out a water filtration method, it is characterized in that: the method comprises the following steps: A, secondary clarifier effluent enter effluent trough by water outlet weir plate; B, utilize the filter plate installed in effluent trough to remove suspended substance in water outlet, clear liquid enters effluent trough after filter by filter plate, and mud is trapped within filter plate; C, the clearing apparatus be suspended on mud scraper or suction dredger cantilever rotate around circular settling tank, the mud that adheres on cleaning filter front filter plate, and sludgd deposition is before filter bottom effluent trough; D, absorb by being fixed on sludge drainage system on mud scraper or suction dredger cantilever the mud be deposited on before filter in effluent trough, and mud is drained into second pond water inlet guide shell or inlet channel; Mud and the second pond of E, absorption are intake after mixed solution fully mixes and carry out mud-water separation in second ponds; Water after filtering drains into outfall sewer by exit branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410556085.1A CN104326623A (en) | 2014-10-20 | 2014-10-20 | Water discharging and filtering device of sedimentation tank and filtering method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410556085.1A CN104326623A (en) | 2014-10-20 | 2014-10-20 | Water discharging and filtering device of sedimentation tank and filtering method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104326623A true CN104326623A (en) | 2015-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410556085.1A Pending CN104326623A (en) | 2014-10-20 | 2014-10-20 | Water discharging and filtering device of sedimentation tank and filtering method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104326623A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259339A (en) * | 2008-04-23 | 2008-09-10 | 武汉科技学院 | Round subsider micro-filter cloth surface filtration water exit method |
| KR20100037773A (en) * | 2008-10-02 | 2010-04-12 | (주)범한엔지니어링 종합건축사 사무소 | Sludge and scum remove equipment with supervisory control device of scum in circular sedimentation basin |
| CN201470224U (en) * | 2009-08-24 | 2010-05-19 | 杭州海拓环境工程有限公司 | Sedimentation tank for sewage treatment |
| CN102319526A (en) * | 2011-08-31 | 2012-01-18 | 张旭光 | Sedimentation tank filter weir |
| CN202223978U (en) * | 2011-08-31 | 2012-05-23 | 张旭光 | Filter weir of sedimentation tank |
-
2014
- 2014-10-20 CN CN201410556085.1A patent/CN104326623A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259339A (en) * | 2008-04-23 | 2008-09-10 | 武汉科技学院 | Round subsider micro-filter cloth surface filtration water exit method |
| KR20100037773A (en) * | 2008-10-02 | 2010-04-12 | (주)범한엔지니어링 종합건축사 사무소 | Sludge and scum remove equipment with supervisory control device of scum in circular sedimentation basin |
| CN201470224U (en) * | 2009-08-24 | 2010-05-19 | 杭州海拓环境工程有限公司 | Sedimentation tank for sewage treatment |
| CN102319526A (en) * | 2011-08-31 | 2012-01-18 | 张旭光 | Sedimentation tank filter weir |
| CN202223978U (en) * | 2011-08-31 | 2012-05-23 | 张旭光 | Filter weir of sedimentation tank |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150204 |