CN104709969B - A kind of spontaneous membrane filtering method processed for waste water and defecator thereof - Google Patents
A kind of spontaneous membrane filtering method processed for waste water and defecator thereof Download PDFInfo
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- CN104709969B CN104709969B CN201510108169.3A CN201510108169A CN104709969B CN 104709969 B CN104709969 B CN 104709969B CN 201510108169 A CN201510108169 A CN 201510108169A CN 104709969 B CN104709969 B CN 104709969B
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Abstract
The invention discloses a kind of spontaneous membrane filtering method processed for waste water and defecator thereof, its technical scheme is to arrange fixing mould bases in airtight cylinder, utilize the solid suspension (SS) that in waste water, self exists, the solid suspension in waste water is made to be condensed into bigger cotton-shaped granule by flocculant effect, under the certain pressure set and cyclonic action, making it be attached on the film frame of cylinder or prism and build film voluntarily, waste water is by carrying out filtering and blowdown from filming layer；The defecator used includes sealed cylinder, sealed cylinder top is provided with back purge system, bottom is provided with mud discharging mouth, side cylinder near bottom is provided with water inlet, side cylinder near top is provided with outlet, being provided with the mould bases being connected with back purge system, water inlet respectively in sealed cylinder, the bottom within sealed cylinder is provided with the cyclone pipe communicated with water inlet；The present invention processes that technique is simple, floor space is little, low cost, efficiency are high and good energy-conserving effect.
Description
Technical field
The invention belongs to membrane filtration technical field, realize filtering the physical filtering method of purpose, and supporting defecator particularly to a kind of self-built film of the solid suspension utilized in waste water.
Background technology
Through the development of over half a century, China's film industry has been stepped into the fast-growing period, and the application in fields such as electricity power, nonferrous metallurgy, desalinization, Water purification, waste water recycling and medicine foods of the membrane technologies such as ultrafiltration, microfiltration, reverse osmosis expands rapidly.The most in recent years, along with national energy-saving reduces discharging enforcement and the development of environmental protection industry of policy, the application as the core parts film of water process is more extensive, and the total market size is the most increasing.
Film is as a kind of filtrate with Selective Separation function, according to the difference of used material, can be divided into inoranic membrane and organic membrane, and inoranic membrane is mainly ceramic membrane and metal film, and organic membrane is then to be made by various macromolecular materials.The use of film provides the assembly of various different pore size, according to the difference in aperture, can be divided into again micro-filtration membrane, ultrafilter membrane, NF membrane and reverse osmosis membrane etc., be respectively used to different fields and different filtering objects.
The greatest problem of film application is the pollution in using, and fenestra is highly prone to impurities in water and blocks, and causes flux to decline, and flow velocity reduces, and conventional method is by backwash, makes fenestra recover original and oozed ability.But because life-time service dirty is too much, normal flushing is also unable to reach or recovers original using effect, and this is accomplished by changing in time.Therefore, using membrane technology in sewage disposal, the loss of membrane is the principal element drawing high cost with replacing.Membrane technology in use requirement to condition of water quality is harsher, generally requires strict preposition pretreatment, and this most also have impact on the application in some fields.
In the evolution of membrane filtration technology, the lifting of technology is mainly reflected in improvement and the application of membrane material, and technology dominant right is in western countries.But utilizing the solid suspension self contained in sewage to build film, this know-why is proposed first with method, belongs to an original technological invention, in industry and civil sewage process field, there is important commercial application and be worth.
Summary of the invention
It is an object of the invention to provide and a kind of process that technique is simple, floor space is little, low cost, efficiency is high and the spontaneous membrane filtering method processed for waste water of good energy-conserving effect and defecator thereof.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that, the present invention is to arrange fixing mould bases in airtight cylinder, utilize the solid suspension (SS) that in waste water, self exists, the solid suspension in waste water is made to be condensed into bigger cotton-shaped granule by flocculant effect, under the certain pressure set and cyclonic action, make it be attached on the mould bases of cylinder or prism and build film voluntarily, this film is referred to as from filming or self-built film, waste water is by filtering from filming layer, clear water flows out from the diversion cavity lower end of mould bases, the solid suspension being trapped under cyclonic action, then discharge by the outside flocking settling at film layer the bottom by cylinder；
Described spontaneous membrane filtering method specifically includes following steps:
The first step, arranges support mould bases: the effect of its mould bases is to support for providing from the attachment of filming and formation, and the inside of mould bases is again as clear water diversion cavity simultaneously in the cylinder closed；Its mould bases is shaped as cylinder or prism, is the core component modeled voluntarily, uses engineering plastics or metal one-time molding, or uses lamination assembling to be formed；
Second step, use flocculant that solid suspension in waste water is flocculated: to add flocculant after waste water enters closed cylinder, making the solid suspension in waste water fully condense by flocculant effect thus produce substantial amounts of floccule body, these floccule bodys are the essential conditions formed from filming；
3rd step, film is built voluntarily: the waste water cyclone pipe from closed cylinder bottom enters cylinder under the effect of eddy flow, the effect of eddy flow is to make inner barrel current along the annularly flow of parallel tangents direction, make flocculation more abundant, solid suspension meets the needs building film through the flock that flocculation produces, the gradually superposition of ever-increasing flock gathers around middle mould bases flowing under the effect being incorporated in eddy flow, waste water formed within 24-72 hour after entering sealed cylinder equilibrium from filming layer；Generate voluntarily the most still plays flocculation from filming layer, waste water is during by spontaneous membrane filtration, solid suspension fine particles is constantly adsorbed and is condensed, big molecule floc sedimentation is the most directly blocked and retains, therefore, the process filtered also is solid suspension constantly adsorbed cohesion and the process of flocculation simultaneously, the solid suspension intercepted by filtration itself becomes again a part for film body, clear water after filtration flows out from the diversion cavity lower end of mould bases, and the solid suspension being trapped is then in the outside sedimentation of film layer.
4th step, control the thickness from filming layer and carry out backwash: being maintained between 1mm-10mm from filming layer, difference according to handled sewage controls thicknesses of layers by automatically adjusting pressure, outside 24 hours theca internas by Automatic-falling once, thus keeping film layer stable, the scope that pressure adjustable joint controls is 0.05mpa-0.3mpa；Build after film waste water by from filming layer by cloudy state slowly become clear, move closer to and reach the water treatment standard of design, water-flowing amount also reaches optimal, filter along with lasting water flowing afterwards, the most gradually thicken from filming layer, then water-flowing amount starts to diminish, certain time point after reducing by the optimal time point of flux to flux, it is " film layer control interval " during this, " film layer control interval " uses water-flowing amount and two parameters of pressure to realize automatically controlling, when flux is less than the lower limit minimum point of control interval, back purge system automatically turns on, backwash moment under automatic control completes, and make the outside more than 1mm-10mm thickness from filming layer Automatic-falling under eddy flow drives, until returning to the standard state of film layer upper control limit；
5th step, mud discharging: the solid suspension that tunicle layer retains constantly is assembled to cylinder body bottom precipitation under the effect of eddy flow, finally discharges from discharge pipeline.
Preferably, from the material carrier of filming be the solid suspension that in sewage, self is contained.
The defecator that the present invention uses includes sealed cylinder, sealed cylinder top is provided with back purge system, mud discharging mouth it is provided with bottom sealed cylinder, its structural feature is: the sealed cylinder side cylinder near bottom is provided with water inlet, the sealed cylinder side cylinder near top is provided with outlet, being provided with the mould bases being connected with back purge system in sealed cylinder, the bottom within sealed cylinder is provided with the cyclone pipe communicated with water inlet；
Preferably, be shaped as cylinder or prism, use engineering plastics or metal one-time molding, or the use lamination assembling of mould bases is formed；
Preferably, one-time formed mould bases surface is designed with vertical outlet pass, is provided with transverse concave groove UNICOM, transverse concave groove width ＜ 1mm between vertical outlet pass, water is through can import vertical outlet pass, vertical outlet pass width ＜ 1mm after transverse concave groove from both sides；
Preferably, the mould bases that lamination assembling is formed, its lamination spacing 0.1mm-1mm are used；
Preferably, cyclone pipe is provided with 5-8 root, and the spacing of cyclone pipe is 1.5m-2.5m；
Preferably, back purge system is connected with mould bases by backwash pipeline by external motor；
Beneficial effects of the present invention:
(1) low cost: the present invention is essentially different with existing membrane technology from filming, it is not made up of certain material, it it is not the membrane module in physical significance, need not material from filming make, the material carrier constituting it is exactly the solid suspension self contained in waste water, is to depend on mould bases according to the condition set after waste water enters closed cylinder and generate voluntarily, need not special material make, more need not periodic replacement, therefore, cost is relatively low；
(2) filtration treatment technique is simple, efficiency is high: the present invention passes through chemical flocculation and the reciprocal action of membrane filtration, make do not using microorganism, reach to remove the purpose of Organic Pollutants in Wastewater in the case of not using biochemical process, organic pollution is processed more than using biochemical method technique with the method for physics, efficiency is high and pollution-free, and this provides new technological approaches undoubtedly in terms of processing organic wastewater；
(3) floor space is little, good energy-conserving effect: assembly of the invention is simple and reasonable, is taken up an area by extensive Sedimentation tank etc. relatively big and invests high equipment and made integration apparatusization into and process, therefore floor space is little, cost of investment is relatively low, and owing to need not change film, therefore, energy-saving effect is also very good；
(4) know-why of this invention is proposed first with method, belongs to a kind of original technology, has important commercial application in industry and civil sewage process field and is worth.
Accompanying drawing explanation
Fig. 1 is the structural representation of the defecator of the present invention；
Fig. 2 is the structural representation of the mould bases of the present invention；
Fig. 3 is the schematic diagram of cyclone pipe of the present invention distribution.
1-sealed cylinder；2-back purge system；3-mud discharging mouth；4-water inlet；5-outlet；6-mould bases；7-film layer；8-cyclone pipe；The vertical outlet pass of 61-；62-transverse concave groove.
Detailed description of the invention
The present invention is in airtight cylinder, utilize the solid suspension (SS) in waste water, the solid suspension in waste water is made to be condensed into bigger cotton-shaped granule by flocculant effect, under the certain pressure set and cyclonic action, make it be attached on the film frame of cylinder or prism and build film voluntarily, this film is referred to as from filming or self-built film, and waste water is by being filtered from filming and clarifying；Concrete filter method includes:
The first step, arranges support mould bases: the effect of its mould bases is to support, simultaneously again as clear water diversion cavity for providing from the attachment of filming and formation in the cylinder closed；Its mould bases is shaped as cylinder or prism, is the core component modeled voluntarily, can use engineering plastics or metal one-time molding, it is possible to use lamination assembling is formed；One-time formed mould bases surface is designed with vertical outlet pass, is transverse concave groove UNICOM between outlet pass, transverse concave groove width ＜ 1mm, and water is through can import vertical outlet pass, vertical outlet pass width ＜ 1mm after transverse concave groove from both sides；Use the mould bases that lamination assembling is formed, lamination spacing 1 mm.
Second step, use flocculant that solid suspension in waste water is flocculated: to add flocculant after waste water enters closed cylinder, making the solid suspension in waste water fully condense by flocculant effect thus produce substantial amounts of floccule body, these floccule bodys are the essential conditions formed from filming；Flocculant is the conventional method that in industry at present and civil waste water processing procedure, precipitate and separate solid suspension is used.Flocculation sediment be typically chosen inorganic flocculating agent and organic flocculant with the use of, compression double electric layer will be produced after two kinds of aqueous solutions add in waste water, make the suspended particulates loss of stability in waste water, micelle thing phase inter coagulation makes microgranule increase, forming floccule body and alumen ustum and depart from aqueous phase precipitation, the present invention is exactly sad this feature of flocculant of reason.
3rd step, film is built voluntarily: the waste water cyclone pipe from closed cylinder bottom enters cylinder under the effect of eddy flow, the effect of eddy flow is to make inner barrel current along the annularly flow of parallel tangents direction, make flocculation more abundant, it is the solid suspension that in sewage, self is contained from the material carrier of filming, solid suspension meets the needs building film through the flock that flocculation produces, the gradually superposition of ever-increasing flock gathers around middle mould bases flowing under the effect being incorporated in eddy flow, waste water formed within 72 hours after entering sealed cylinder equilibrium from filming layer；Generate voluntarily the most still plays flocculation from filming layer, waste water is during by spontaneous membrane filtration, solid suspension fine particles is constantly adsorbed and is condensed, big molecule floc sedimentation is the most directly blocked and retains, therefore, the process filtered also is solid suspension constantly adsorbed cohesion and the process of flocculation simultaneously, the solid suspension intercepted by filtration itself becomes again a part for film body, clear water after filtration flows out from the diversion cavity lower end of mould bases, and the solid suspension being trapped is then in the outside sedimentation of film layer.
4th step, control the thickness from filming layer and carry out backwash: being generally kept between 1mm-10mm from filming layer, difference according to handled sewage controls thicknesses of layers by automatically adjusting pressure, typically outside 24 hours theca internas by Automatic-falling once, thus keeping film layer stable, the scope that pressure adjustable joint controls is 0.05mpa-0.3mpa；Build after film water by self-built film by cloudy state slowly become clear, move closer to and reach the water treatment standard of design, water-flowing amount also reaches optimal, filter along with lasting water flowing afterwards, film layer the most gradually thickeies, then water-flowing amount starts to diminish, certain time point after reducing by the optimal time point of flux to flux, it is " film layer control interval " during this, " film layer control interval " uses water-flowing amount and two parameters of pressure to realize automatically controlling, when flux is less than the lower limit minimum point of control interval, back purge system automatically turns on, backwash moment under automatic control completes, and make outer film layer Automatic-falling under eddy flow drives, until returning to the standard state of film layer upper control limit；
Back purge system is connected with mould bases by backwash pipeline by external motor, and after startup, current, by the vertical outlet pass on moment back flush mould bases, make film layer loosen and come off.
5th step, mud discharging: the solid suspension that tunicle layer retains constantly is assembled to cylinder body bottom precipitation under the effect of eddy flow, finally discharges from discharge pipeline.
The defecator that the present invention uses includes sealed cylinder 1, sealed cylinder top is provided with back purge system 2, mud discharging mouth 3 it is provided with bottom sealed cylinder 1, the sealed cylinder 1 side cylinder near bottom is provided with water inlet 4, the sealed cylinder 1 side cylinder near top is provided with outlet 5, being provided with the mould bases 6 being connected with back purge system 2 in sealed cylinder 1, the bottom within sealed cylinder 1 is provided with the cyclone pipe 8 communicated with water inlet 4；Mould bases 6 be shaped as cylinder or prism, engineering plastics or metal one-time molding can be used, it is possible to use lamination assembling formed；One-time formed mould bases 6 surface is designed with vertical outlet pass 61, it is provided with transverse concave groove 62 UNICOM between vertical outlet pass 61, transverse concave groove 62 width ＜ 1mm, water is through can import vertical outlet pass 61, vertical outlet pass 61 width ＜ 1mm after transverse concave groove 62 from both sides；Use the mould bases 6 that lamination assembling is formed, its lamination spacing 0.1mm-1mm；Cyclone pipe 8 is provided with 5-8 root, and the spacing of cyclone pipe 8 is 1.5m-2.5m, it is ensured that the equilibrium of water inlet and stationarity；
Back purge system 2 is connected with mould bases 6 by backwash pipeline by external motor；After startup, current, by the vertical outlet pass 61 on moment back flush mould bases 6, make film layer 7 loosen and come off.
Claims (3)
1. the spontaneous membrane filtering method processed for waste water, fixing mould bases is set in airtight cylinder, utilize the solid suspension that in waste water, self exists, the solid suspension in waste water is made to be condensed into bigger cotton-shaped granule by flocculant effect, under the certain pressure set and cyclonic action, make it be attached on the mould bases of cylinder or prism and build film voluntarily, this film is referred to as from filming or self-built film, waste water is by filtering from filming layer, clear water flows out from the diversion cavity lower end of mould bases, the solid suspension being trapped under cyclonic action, then discharge by the outside flocking settling at film layer the bottom by cylinder, it is characterized in that, described spontaneous membrane filtering method specifically includes following steps:
The first step, arranges support mould bases: the effect of its mould bases is to support for providing from the attachment of filming and formation, and the inside of mould bases is again as clear water diversion cavity simultaneously in the cylinder closed；Its mould bases is shaped as cylinder or prism, is the core component modeled voluntarily, uses engineering plastics or metal one-time molding, or uses lamination assembling to be formed；
Second step, use flocculant that solid suspension in waste water is flocculated: to add flocculant after waste water enters closed cylinder, making the solid suspension in waste water fully condense by flocculant effect thus produce substantial amounts of floccule body, these floccule bodys are the essential conditions formed from filming；
3rd step, film is built voluntarily: the waste water cyclone pipe from closed cylinder bottom enters cylinder under the effect of eddy flow, the effect of eddy flow is to make inner barrel current along the annularly flow of parallel tangents direction, make flocculation more abundant, solid suspension meets the needs building film through the flock that flocculation produces, the gradually superposition of ever-increasing flock gathers around middle mould bases flowing under the effect being incorporated in eddy flow, waste water formed within 24-72 hour after entering sealed cylinder equilibrium from filming layer；Generate voluntarily the most still plays flocculation from filming layer, waste water is during by spontaneous membrane filtration, solid suspension fine particles is constantly adsorbed and is condensed, big molecule floc sedimentation is the most directly blocked and retains, therefore, the process filtered also is solid suspension constantly adsorbed cohesion and the process of flocculation simultaneously, the solid suspension intercepted by filtration itself becomes again a part for film body, clear water after filtration flows out from the diversion cavity lower end of mould bases, and the solid suspension being trapped is then in the outside sedimentation of film layer；
4th step, control the thickness from filming layer and carry out backwash: being maintained between 1mm-10mm from filming layer, difference according to handled sewage controls thicknesses of layers by automatically adjusting pressure, outside 24 hours theca internas by Automatic-falling once, thus keeping film layer stable, the scope that pressure adjustable joint controls is 0.05mpa-0.3mpa；Build after film waste water by from filming layer by cloudy state slowly become clear, move closer to and reach the water treatment standard of design, water-flowing amount also reaches optimal, filter along with lasting water flowing afterwards, the most gradually thicken from filming layer, then water-flowing amount starts to diminish, certain time point after reducing by the optimal time point of water-flowing amount to water-flowing amount, it is " film layer control interval " during this, " film layer control interval " uses water-flowing amount and two parameters of pressure to realize automatically controlling, when water-flowing amount is less than the lower limit minimum point of film layer control interval, back purge system automatically turns on, backwash moment under automatic control completes, and make the outside more than 1mm-10mm thickness from filming layer Automatic-falling under eddy flow drives, until returning to the standard state of film layer upper control limit；
5th step, mud discharging: the solid suspension that tunicle layer retains constantly is assembled to cylinder body bottom precipitation under the effect of eddy flow, finally discharges from discharge pipeline.
Method the most according to claim 1, it is characterised in that: it is the solid suspension that in sewage, self is contained from the material carrier of filming.
3. the defecator used in the spontaneous membrane filtering method that waste water processes, including sealed cylinder (1), sealed cylinder (1) top is provided with back purge system (2), sealed cylinder (1) bottom is provided with mud discharging mouth (3), it is characterized in that: the sealed cylinder (1) the side sealed cylinder near bottom is provided with water inlet (4), the sealed cylinder (1) the side sealed cylinder near top is provided with outlet (5), the mould bases (6) being connected with back purge system (2) it is provided with in sealed cylinder (1), the bottom of sealed cylinder (1) inside is provided with the cyclone pipe (8) communicated with water inlet (4)；Mould bases (6) be shaped as cylinder or prism, use engineering plastics or metal one-time molding, one-time formed mould bases (6) surface is designed with vertical outlet pass (61), it is provided with transverse concave groove (62) UNICOM between vertical outlet pass (61), transverse concave groove (62) width ＜ 1mm, water is through importing vertical outlet pass (61), vertical outlet pass (61) width ＜ 1mm after transverse concave groove (62) from both sides；Cyclone pipe (8) is provided with 5-8 root, and the spacing of cyclone pipe (8) is 1.5m-2.5m；Back purge system (2) is connected with mould bases (2) by backwash pipeline by external motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108169.3A CN104709969B (en) | 2015-03-12 | 2015-03-12 | A kind of spontaneous membrane filtering method processed for waste water and defecator thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510108169.3A CN104709969B (en) | 2015-03-12 | 2015-03-12 | A kind of spontaneous membrane filtering method processed for waste water and defecator thereof |
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| CN104709969A CN104709969A (en) | 2015-06-17 |
| CN104709969B true CN104709969B (en) | 2016-08-31 |
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| CN201510108169.3A Expired - Fee Related CN104709969B (en) | 2015-03-12 | 2015-03-12 | A kind of spontaneous membrane filtering method processed for waste water and defecator thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106517542A (en) * | 2016-12-30 | 2017-03-22 | 天津东风节能环保科技有限公司 | Standing-free dynamic membrane formation method and device |
| CN112897643A (en) * | 2021-01-29 | 2021-06-04 | 西安交通大学 | Reverse osmosis seawater desalination device based on graphene oxide separation membrane and desalination method thereof |
| CN117865278B (en) * | 2024-03-11 | 2024-05-07 | 陇东学院 | Photocatalysis water treatment device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0263532A (en) * | 1988-08-29 | 1990-03-02 | Natl Food Res Inst | Formation of dynamic film |
| CN2531873Y (en) * | 2002-02-07 | 2003-01-22 | 张行赫 | Multi-pipe type active powder material filter |
| CN100368313C (en) * | 2006-03-06 | 2008-02-13 | 山东大学 | Intensified mixed coagulation and dynamic film integrated waste water treating process |
| CN201665559U (en) * | 2010-04-09 | 2010-12-08 | 上海巴安水务股份有限公司 | Same side rotational flow water distribution device used for micro filtration filtering pool |
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