CN108545793A - A kind of filtrate for handling the suspension rapid filter of closure option - Google Patents
A kind of filtrate for handling the suspension rapid filter of closure option Download PDFInfo
- Publication number
- CN108545793A CN108545793A CN201810427285.5A CN201810427285A CN108545793A CN 108545793 A CN108545793 A CN 108545793A CN 201810427285 A CN201810427285 A CN 201810427285A CN 108545793 A CN108545793 A CN 108545793A
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- China
- Prior art keywords
- filtrate
- shape
- sewage
- filter
- cso
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Classifications
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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
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
-
- 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
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of filtrates for handling the suspension rapid filter of closure option, its main body is made using ethylene-vinyl acetate copolymer foamed plastic, shape is in cylinders shape, and each cylinder has corner angle, mutually to squeeze stratification with pond inner periphery filtrate in filtering, make to form the CSO filter layers floated on sewage to be filtered in the suspension rapid filter.Filtrate provided by the invention, it is rough surface, multi-angular, the shape of its cylinders shape is conducive to form closely floating filter layer in sewage surface when by Sewage shock between filtrate in pond, bottom-up fast filtering is carried out to CSO, energy effectively catching lives most of particulate pollutant in sewage, to reduce SS the and COD concentration in rainy day closure option, it is very suitable for the fast filtering processing of rainy day combined sewer overflow；Low manufacture cost simultaneously is conducive to mass production, is ideal CSO fast filterings suspended filter material.
Description
Technical field
The present invention relates to the processing of rain technical field of sewage, especially combined sewer overflow, and in particular to one kind is used for
Handle the filtrate of the suspension rapid filter of closure option.
Background technology
When the rainy day of drainage system region, with the increase of rainfall, Rainfall runoff correspondingly increases, and works as pipeline flow
More than the main pipe that shuts off conveying capacity when, overflow will occur, part rain dirt combined sewage is discharged into receiving by overflow well or pumping plant
Water body and generate overflow, which is combined sewer overflow (CombinedSewer Overflows, CSO).In city
After point-source pollution is gradually controlled, city CSO has become city of the world's water environment pollution, ecology as typical non-point pollution
The major reason of system imbalance, if city CSO is not controlled, city will seriously be destroyed by being directly discharged into the polluter of natural water body
City's water quality and the recovery for influencing function of water body.
Combined sewer overflow variation water quality is big, and part water quality is far above sewage, thus initial rainwater and CSO etc. are to receiving water body
Pollution it is extremely serious.CSO control measure can be divided mainly into source control, pipe-line system controls, storage is regulated and stored and end-o f-pipe -control
Four major class, but China mostly uses storage and the control means such as regulates and stores at present, and there is no be completely directed to the larger pollution of these waters
The treatment facility in source.
Suspension rapid filter can be applied to pipe network end as a kind of CSO end-o f-pipe -controls equipment, be carried out soon to entering river rain sewage
Speed processing.When operation, rain sewage to be filtered enters suspension rapid filter and is filtered from bottom upwardly through filtrate, and filtrate is by floating
Power and water flow impact pressure compacting compress, and pollutant are retained, to efficiently control combined sewer overflow pollution, to the SS of rain sewage
Good removal effect is generated with COD.As it can be seen that the function quality of filtrate quality has been largely fixed suspension fast filtering pond
To the treatment effect of CSO, select and design suitable filtrate, to handle closure option it is really necessary to.
The filtrate of sewage disposal at present is mostly that proportion is larger or need the filtrate of longer hydraulic detention time, to apply to water
It flows in the suspension rapid filter filtered from bottom to top, then the proportion of filtrate need to be less than water, and otherwise filtrate can not suspend in water, can not
It squeezes stratification and forms filter layer, cause it bad to the treatment effect of CSO.In view of the above-mentioned problems, also there is part researcher to open
Sent out proportion it is relatively light, suitable for the filtrate of fast filtering.
For example, application No. is 03104773.4 applications for a patent for invention to disclose a kind of fiber filtering of water process, it should
Filtrate is made of tow joint and the tow circle being fixed therein and tailfiber tow, and wherein tow circle and tailfiber tow is by plant fiber
Or the monfil boundling of one or more of hydrophily staple fibre forms, tow joint be plastics, ceramics, rubber or
Solid made of metal or porous body with holes, are mainly used for the separation of various suspended impurities in sewage, be particularly suitable for containing
The suspended impurity of oils or lipid detaches.Though the filtrate is applicable in fast filtering, density is smaller, close to water, is filtered to be formed
Layer, proportion is still excessive, and it is fiber filtering, easily mutually winding between filament after long-time service, therefore still not applicable
It is used in CSO rapid filtering devices.
For another example, application No. is 00205026.9 patent documents to disclose a kind of novel water treatment filter medium, the filtrate by
Extrusion molding after plastic foamed, sets filtration channel and micropore in it.But it is only applicable to carry out refined filtration to the preferable water of water quality,
And combined sewer overflow is dirtier, and be not suitable for, and its filtrate internal structure is complicated, manufacturing process is relatively cumbersome, and cost is higher.
For another example, application No. is 201410437905.5 applications for a patent for invention to disclose a kind of deferrization and demanganization suspended filter material
And preparation method thereof, for the filtrate by manganese sand, expanded perlite and plastic pellet through artificial synthesized, proportion is less than water, can suspend
Yu Shuizhong.But the filtrate is designed, therefore also simultaneously since it manufactures material mainly for iron ion, the manganese ion in sewage
It is not suitable for CSO filterings.
The disclosure of background above technology contents is only used for inventive concept and the technical solution that auxiliary understands the present invention, not
The prior art for necessarily belonging to present patent application, no tangible proof show the above present patent application the applying date
Before have disclosed in the case of, above-mentioned background technology should not be taken to evaluation the application novelty and creativeness.
Invention content
It is a primary object of the present invention to propose that a kind of proportion is less than water, rough surface, has corner angle, grain size are appropriate to be used for
The filtrate of CSO fast filterings reaches the good filter effect to CSO fast filterings.
The present invention proposes following technical scheme for the above-mentioned purpose：
A kind of filtrate for handling the suspension rapid filter of closure option, main body use ethene-vinyl acetate
Co-polymer foamed plastic production forms, and shape is in cylinders shape, and each cylinder has corner angle, with the week in filtering and in pond
Side filtrate mutually squeezes stratification, makes to form the CSO filter layers floated on sewage to be filtered in the suspension rapid filter.
Preferably, wherein one end of all cylinders is connected to the same central part, and the other end is respectively towards different sides
To extension.
Preferably, each cylinder has the same shape and dimensions.
Preferably, the cylinders shape is that stereo cross is starlike.
Preferably, four cylinders of the starlike main body of stereo cross have the same shape and dimensions.
Preferably, the appearance and size of the starlike main body of the cross is no more than 2cm.
Preferably, the appearance and size of the starlike main body of the cross is no more than 1cm.
The filtrate that preceding solution of the present invention provides, in the suspension rapid filter of processing combined system rainy day overflow sewage,
Its density is much smaller than water, can float on waterborne, and rough surface, multi-angular, the shape of cylinders shape is conducive to filtrate in pond
Between form closely floating filter layer in sewage surface when by Sewage shock, bottom-up quick mistake is carried out to CSO
Filter, energy effectively catching lives most of particulate pollutant in sewage, to reduce the SS and COD in rainy day closure option
Concentration is very suitable for the fast filtering processing of rainy day combined sewer overflow；In addition ethylene-vinyl acetate copolymer foamed plastic
Matter is stablized, cheap, and this filtrate simple shape, is conducive to mass production, therefore it is for handling rainy day combined system
It is ideal fast filtering filtrate for the suspension rapid filter of overflow sewage.
On the other hand, when completion filtering is backwashed, the clear water obtained after rapid filter filtering may be used by filtering soon
It carries out top-down backwash at the top of pond, the particle being adsorbed on filtrate can be made by phase mutual friction again between filtrate when flushing
Contact scar object is washed out and sinks to bottom of pond and clear up, and when cleaning is fast and simple.
Description of the drawings
Fig. 1 is the filtrate for the rapid filter that suspends that a specific embodiment of the invention provides；
Fig. 2 is the shape assumption diagram for the starlike filtrate of stereo cross that the preferred embodiment of the present invention provides.
Specific implementation mode
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
When rainy day rainfall is big, the processing of combined sewer overflow (CSO) is while ensureing certain treatment effect with greater need for quick
Efficiently.High-quality filtrate needed for CSO suspension rapid filters should not only have good interception effect, moreover it is possible to be generated centainly to pollutant
Suction-operated, to reach good fast filtering effect.Therefore, ideal filtrate should at least meet：When sewage passes through filtrate
It can be compacted filtrate and closely float filter layer to be formed in water outlet, to remove most graininess pollutant, and
It can be good at expansion in backwash to scatter, attachment eluted by mutual collision friction.The specific implementation of the present invention
Mode provides just such a filtrate for being highly suitable for CSO suspension rapid filters, and its technical solution is as follows：
A kind of filtrate for handling the suspension rapid filter of closure option, main body use ethene-vinyl acetate
Co-polymer foamed plastic production forms, and shape is in cylinders shape, and each cylinder has corner angle, with the week in filtering and in pond
Side filtrate mutually squeezes stratification, makes to form the CSO filter layers floated on sewage to be filtered in the suspension rapid filter.It selects
Ethylene-vinyl acetate copolymer foamed plastics make filtrate, and density is much smaller than water (about 55kg/m3), even if in filter process
The density of density after middle water suction also much smaller than water, it is ensured that there is good buoyancy always during the filtration process, it is specific and
Speech, when starting water suction, density can be changed to about 137.5kg/m3, filtrate global density becomes during filtering ponds stable operation
About 200kg/m3, variable density be conducive to the later stage backwash when filtrate expansion and friction；In addition, its rough surface, it can be effective
Adsorption particle contact scar object, reaches good filter effect.
In a preferred embodiment, filtrate agent structure is what multiple cylinders were constituted, wherein one end of multiple cylinders
It is commonly connected together, the other end extends towards different directions respectively, to can mutually be stuck between filtrate, especially in flow
Under percussion, mutually it is stuck to form the filter layer of consolidation.It is highly preferred that each cylinder is of similar shape and ruler
It is very little.Such as all it is rectangular scapus.
In a specific embodiment, the filtrate is that stereo cross as depicted in figs. 1 and 2 is starlike, and there are four columns for tool
Body 1,2,3,4, four cylinders are cubics, are integrally formed the filtrate with multiple contact surfaces and multiple corner angle, it is convenient with
The filtrate of surrounding mutually blocks, while having more contact surfaces with enlarged contact resistance with filtrate around, in turn, it is ensured that
The combining closely between filtrate during bottom-up impact filtration.
It is furthermore preferred that four cylinders of the starlike filtrate of above-mentioned cross are also that shape and size are identical, also, each cylinder
Two of which opposite be all that one is long and the other is short, for example, one of cylinder 1 face L1 is shorter, opposite L2 is then longer, this
Sample is conducive to block combination.
The size of filtrate can be set as the case may be, and the filter layer gap that should not be otherwise formed greatly very much is too many, usually
It is set as several millimeters or 1cm, 2cm etc., the size that should not be too large.Also unsuitable too small size, it is too small to cause to filter pressure head
Rise, increases power consumption, be generally best with several millimeters.
The present invention provides a kind of suitable, efficient, low for the suspension rapid filter of improvement rainy day closure option
Suitable ethylene-vinyl acetate copolymer filtrate is packed into suspension rapid filter by the filtrate of cost using preceding, and sewage is from pond bottom
Portion enters filtering ponds, and filtrate is floated the filter layer for gradually impacting top delivery port and forming consolidation by the water constantly accumulated.In addition,
Ethylene-vinyl acetate copolymer filtrate can rely on the filtered clear water of suspension rapid filter as backwashing water, by backwashing water
Head is backwashed, while clear water can provide backwashing water for the filter chamber backwashed after the filter of other filter chambers, need not carry
For additional water and energy.Backwash when, filtrate of the present invention due to variable density be conducive to the later stage backwash when filtrate it is swollen
Swollen and friction, while eluting attachment under backwash head effect.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those skilled in the art to which the present invention belongs, it is not taking off
Under the premise of from present inventive concept, several equivalent substitute or obvious modifications can also be made, and performance or use is identical, all answered
When being considered as belonging to protection scope of the present invention.
Claims (7)
1. a kind of filtrate for handling the suspension rapid filter of closure option, it is characterised in that：Its main body uses ethylene-
Vinyl acetate copolymer foamed plastic production forms, and shape is in cylinders shape, and each cylinder has corner angle, in filtering with
Periphery filtrate in pond mutually squeezes stratification, makes to form the CSO mistakes floated on sewage to be filtered in the suspension rapid filter
Filtering layer.
2. filtrate as described in claim 1, it is characterised in that：Wherein one end of all cylinders is connected to the same center
Portion, the other end extend towards different directions respectively.
3. the filtrate as claimed in claim 2 for the rapid filter that suspends, it is characterised in that：Each cylinder shape having the same
Shape and size.
4. filtrate as claimed in claim 2, it is characterised in that：The cylinders shape is that stereo cross is starlike.
5. filtrate as claimed in claim 4, it is characterised in that：Four cylinders of the starlike main body of stereo cross are having the same
Shape and size.
6. filtrate as claimed in claim 5, it is characterised in that：The appearance and size of the starlike main body of the cross is no more than 2cm.
7. filtrate as claimed in claim 6, it is characterised in that：The appearance and size of the starlike main body of the cross is no more than 1cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810427285.5A CN108545793A (en) | 2018-05-07 | 2018-05-07 | A kind of filtrate for handling the suspension rapid filter of closure option |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810427285.5A CN108545793A (en) | 2018-05-07 | 2018-05-07 | A kind of filtrate for handling the suspension rapid filter of closure option |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108545793A true CN108545793A (en) | 2018-09-18 |
Family
ID=63513580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810427285.5A Withdrawn CN108545793A (en) | 2018-05-07 | 2018-05-07 | A kind of filtrate for handling the suspension rapid filter of closure option |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108545793A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369440A (en) * | 2002-03-22 | 2002-09-18 | 清华大学 | Process for treating sewage with zeolite filler in aerated biologic filter pool and zeolite filler |
| KR101299717B1 (en) * | 2013-06-04 | 2013-09-10 | 코오롱워터앤에너지 주식회사 | Continuous washing and filtering apparatus using eva floating media |
| US20160002066A1 (en) * | 2013-11-29 | 2016-01-07 | Sumitomo Electric Industries, Ltd. | Water treatment apparatus and water treatment method using the same |
| CN206008131U (en) * | 2016-07-27 | 2017-03-15 | 谢绍舜 | Integral light filtrate water treatment filter pond |
| CN206538207U (en) * | 2016-11-30 | 2017-10-03 | 中冶华天工程技术有限公司 | A kind of old town rainwater and effluent disposing system |
-
2018
- 2018-05-07 CN CN201810427285.5A patent/CN108545793A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369440A (en) * | 2002-03-22 | 2002-09-18 | 清华大学 | Process for treating sewage with zeolite filler in aerated biologic filter pool and zeolite filler |
| KR101299717B1 (en) * | 2013-06-04 | 2013-09-10 | 코오롱워터앤에너지 주식회사 | Continuous washing and filtering apparatus using eva floating media |
| US20160002066A1 (en) * | 2013-11-29 | 2016-01-07 | Sumitomo Electric Industries, Ltd. | Water treatment apparatus and water treatment method using the same |
| CN206008131U (en) * | 2016-07-27 | 2017-03-15 | 谢绍舜 | Integral light filtrate water treatment filter pond |
| CN206538207U (en) * | 2016-11-30 | 2017-10-03 | 中冶华天工程技术有限公司 | A kind of old town rainwater and effluent disposing system |
Non-Patent Citations (1)
| Title |
|---|
| 李思远: "合流制管网污水溢流污染特征及其控制技术研究", 《中国优秀博硕士学位论文全文数据库(硕士) 工程科技Ⅰ辑》 * |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180918 |
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| WW01 | Invention patent application withdrawn after publication |