CN100349805C - Dynamic micro filter membrane assembly and water treatment process method - Google Patents
Dynamic micro filter membrane assembly and water treatment process method Download PDFInfo
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- CN100349805C CN100349805C CNB2005101355632A CN200510135563A CN100349805C CN 100349805 C CN100349805 C CN 100349805C CN B2005101355632 A CNB2005101355632 A CN B2005101355632A CN 200510135563 A CN200510135563 A CN 200510135563A CN 100349805 C CN100349805 C CN 100349805C
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- 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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Abstract
The present invention discloses a dynamic micro filter membrane assembly and a water treatment process method. The dynamic membrane assembly comprises a filter chamber and a filter screen, wherein the wall of the filter chamber has micropores, the side surface is provided with a recoil water inlet pipe and a filter water outlet pipe, and the top is provided with an air exhaust pipe; the filter screen is folded into a concave and convex curved surface to be fixed to the front and the back walls of the filter chamber, the lower end of the filter chamber is connected with a backwashing air distribution system which comprises an air distribution pipe and an air exposure head, and the air distribution pipe is connected with an air inlet pipe; both top and bottom ends of the filter chamber are connected with a concave and convex surface bearing and supporting assembly, the filter screen is placed on the bearing and supporting assembly, a concave and convex surface pressing and fixing assembly is fixed to the filter screen, and the external side of the bearing and supporting assembly and the inner side of the pressing and fixing assembly are curved surfaces correspondingly to the filter screen. The water treatment process method of the dynamic micro filter membrane assembly comprises hanging membrane, filtering and outputting water, and clearing the dynamic membrane. The structure of the present invention enhances the packing density of the membrane, reduces manufacturing cost and operating cost, and prolongs the service lifetime of the membrane.
Description
Technical field
The present invention relates to sewage treatment area, especially dynamic micro filter membrane assembly and water treatment process method.
Background technology
Adopt micro-filtrate membrane filtration to separate mixed solution in the biochemistry pool at present in the sewage treatment industry, thereby the technology that obtains the better quality water outlet is called MBR (Membrane Biological Reactor) technology.Compare with traditional technology, have and take up an area of to economize, advantage such as water outlet is effective, treat effluent can reach direct reuse water water quality standard.The microfiltration membrane material mostly is polyethylene in the MBR technology at present, polypropylene, materials such as polyvinylidene difluoride (PVDF), price is higher, and the life-span is short (about film imported 5 years, homemade film is about 3 years), construction investment higher (the film investment accounts for half of total investment of engineering greatly), operation energy consumption higher (need a large amount of aerations to wash away, slow down the pollution of film), only obtain promoting and using, thereby the popularization of this technology has been become restriction in the higher engineering of some water quality requirements.
The dynamic membrane filtering separation mixed solution technology that occurs in recent years is a breakthrough of sewage disposal membrane technique, it is to utilize common porous material (as Stainless Steel Cloth, non-woven fabrics, filter cloth etc.) processing and fabricating, filter assemblies places bio-reactor, carrying out along with filtration procedure, microbial metabolites and zoogloea filter the porous medium surface by formation one decks such as absorption, deposition, adhesion periodically grow, come off, regrowth, the dynamic biological matter layer that comes off again, it possesses the fixedly filtration capacity of microfiltration membrane.The technology of mixed solution only limits to the small-scale test stage in the present dynamic film component filtering separation reactor, (plot ratio is less because of its filtering surface mostly is flush type, cost of manufacture is higher), and be difficult to realize on-line cleaning (cleaning filter surface in reactor after being polluted, clear the pollution off), therefore do not move towards the marketization and industrialization as yet.
Summary of the invention
Goal of the invention of the present invention is for providing a kind of membrane module packing density big, and volume is little, a kind of dynamic micro filter membrane assembly and water treatment process method that membrane module is convenient to clean.
The technical scheme that realizes the foregoing invention purpose is as follows:
A kind of dynamic micro filter membrane assembly, comprise filter chamber and filtering net, have micropore on the wall before and after the filter chamber, backflushing water intake pipe is equipped with in the lower end, side, the middle and upper part, side is equipped with and is filtered out water pipe, the emptying tracheae is equipped with at the top, filtering net is converted on the front and back wall that concave-convex curved surface is individually fixed in filter chamber, the filter chamber lower surface links to each other with the back flushing gas distribution system, the back flushing gas distribution system comprises gas-distribution pipe and aeration head, the aeration head vertical distribution is in the gas-distribution pipe both sides, and aeration head is positioned at the passage between filtering net and filter chamber, is connected with inlet pipe on gas-distribution pipe, filter chamber is connected with the male and fomale(M﹠F) supporting parts in two ends up and down, be placed with filtering net on the male and fomale(M﹠F) supporting parts, male and fomale(M﹠F) presses solidly part and is fixed on the filtering net, and the inboard that the outside of male and fomale(M﹠F) supporting parts and male and fomale(M﹠F) press solidly part is and the corresponding curved surface in filtering net both sides.
Have the identical micropore in aperture on the wall before and after the described filter chamber, the diameter of micropore is 0.5～5mm.
Described filtering net is the porous material with certain intensity, as Stainless Steel Cloth, and non-woven fabrics, filter cloth etc.
Between the inner forward and backward wall of filter chamber stiffening web is housed, stiffening web connects the forward and backward wall of filter chamber, and a plurality of point of fixity are established in both sides before and after the filter chamber, are used for fixing filter screen, and variety of ways such as filter screen interlude fixed form such as screw thread, socket joint or press strip can.
All turnover gas in the dynamic micro filter membrane assembly, the joint of Inlet and outlet water can be made the structure that rectangular pipe becomes pipe, so that reduce the thickness of filter chamber.Increase the packing density of membrane module.
A kind of dynamic micro filter membrane assembly water treatment process method may further comprise the steps:
1, Dynamic Membrane forms biofilm
Membrane module is placed the mixed solution of biochemical reactor, impel mixed solution to flow around filter screen by means such as aeration, recycle pumps and form surperficial cross-flow, through after a while, particles such as microorganism colloid adhere in screen surface and form Dynamic Membrane.
2, filter water outlet
Under the prerequisite that guarantees the surface cross-flow of mixed solution and Dynamic Membrane, by improving the pressure reduction between Dynamic Membrane both sides mixed solution and the filtrate, the water after biochemical treatment purifies leaches, and large particulate matter is blocked in the mixed solution;
3, the pollution of Dynamic Membrane
Through filtration after a while, Dynamic Membrane is polluted, and aquifer yield descends, and need stop water outlet, and Dynamic Membrane is regenerated.
4, the cleaning of Dynamic Membrane
Adopt bubble flush clean mode, air blasts gas-distribution pipe by the back flushing inlet pipe, and enter by aeration head in the passage of filtering net and filter chamber, in uphill process, Dynamic Membrane is washed away, rely on to improve the endogenous metabolism that dissolved oxygen concentration quickens Dynamic Membrane simultaneously, impel the Dynamic Membrane loose or dislocation, because of upwelling to water disturbance is less on every side, membrane module places mixed solution, or all can carry out bubble flush clean mode in the supernatant liquor of post precipitation.
5, the process of repetition 1～4 is gone round and begun again.
Wherein when the Dynamic Membrane surface contamination is serious, flush clean mode in the step 4 adopts air water bonded backwashing manner: elder generation is through the bubble flush clean of for some time, the Dynamic Membrane adhesive ability is reduced, carry out the waterpower backwash then, because the waterpower backwash is bigger to the water disturbance of membrane module unit, before hydrodynamic cleaning, make mud be sunken to the following certain depth of membrane module, prevent from when back flushing, to bring the bulk pollutent into filter chamber by the way that staticly settles.
Beneficial effect of the present invention is as follows:
1. optimize the structure of dynamic micro filter membrane assembly, taked the concave-convex curved surface structure, increased the packing density of film, increased the membrane filtration area of unit volume greatly, reduced manufacturing cost.
2. simple in structure, be convenient to dismounting, can change porous material fast, and desirable independent down the cleaning, prolonged the work-ing life of film.
3. dynamic membrane filtering curved surface and filter chamber form vertical passage, utilize bubble to be subjected to the ballistic ununiformity of waterpower on every side that passage is carried out comprehensively washing away from bottom to top in the up-flow process.
4. establish aerating system in filter chamber bottom and two bottom sides, bubble can influence the dissolved oxygen concentration of surrounding environment when washing away Dynamic Membrane, cause the endogenous metabolism of the mutually bonding side of settled organism, make Dynamic Membrane become flexible easier coming off, for the replacing of Dynamic Membrane creates favorable conditions.
5. adopt hydraulic reverse flushing from inside to outside to replace traditional gas back-flushing from inside to outside, can accomplish uniform water distribution from hydromechanical angle, prevent the distribution problem of non-uniform that causes because of depth of water difference, whole filtration face has evenly been washed away, reduced operation energy consumption.
6. device is established venting port, film is being carried out reverse cross-flow bubble when washing away, and avoiding bubble to penetrate the Dynamic Membrane surface, to cause biophase to adhere to inhomogeneous, causes the effluent quality variation.
7. adopt in the filter chamber and set up two perforate faces of multiple spot stiffening web connection, reduced the thickness of filter chamber material, increase the voltage endurance capability of material, reduce manufacturing cost.
8. membrane module does not need special sewage draining exit, the sewage draining exit the when water outlet during normal filtration can wash as hydraulic reverse, the back flushing water inlet pipe is located at the filter chamber lower end, can be when backwash with filter chamber in sedimentary pollutent dash, discharge through the rising pipe of normal filtration.
Description of drawings
Fig. 1 is a Facad structure synoptic diagram of the present invention
Fig. 2 is a plan structure synoptic diagram of the present invention
Fig. 3 is that the A of Fig. 2---A is to sectional view
Fig. 4 is that the B of Fig. 2---B is to sectional view
Fig. 5 is that the C of Fig. 1---C is to sectional view
Fig. 6 is the back-purge system partial enlarged drawing
Fig. 7 cuts open partial enlarged drawing for D-D among Fig. 3
Fig. 8 is filter screen interlude and filter chamber bearing partial enlarged drawing
Fig. 9 is membrane module Inlet and outlet water, turnover tracheae connecting joint partial enlarged drawing
Figure 10 is one-piece construction figure of the present invention
Embodiment
Now the invention will be further described in conjunction with the accompanying drawings and embodiments, but not as a limitation of the invention.
Dynamic micro filter membrane assembly shown in Fig. 1-5, mainly comprise filter chamber 2 and filtering net 1, have the identical micropore in aperture 13 on the filter chamber 2 front and back walls, the diameter of micropore 13 is 0.5～5mm, backflushing water intake pipe 3 is equipped with in the lower end, side, the middle and upper part, side is equipped with and is filtered out water pipe 7, emptying tracheae 9 is equipped with in the upper end, filtering net 1 is converted on the front and back wall that concave-convex curved surface is individually fixed in filter chamber 2, filter chamber 2 lower surfaces link to each other with back flushing gas distribution system 4, back flushing gas distribution system 4 comprises gas-distribution pipe 10 and aeration head 11 as shown in Figure 6, and aeration head 11 is positioned at the lower end of gas-distribution pipe double-side filtering net 1 and 2 passages of filter chamber.Gas-distribution pipe 10 links to each other with inlet pipe 5, filter chamber is connected with male and fomale(M﹠F) supporting parts 8 in two ends about in the of 2 as shown in Figure 7, be placed with filtering net 1 on the male and fomale(M﹠F) supporting parts 8, male and fomale(M﹠F) presses solidly part 6 and is fixed on the filtering net 1, and the inboard that the outside of male and fomale(M﹠F) supporting parts 8 and male and fomale(M﹠F) press solidly part 6 is and the corresponding curved surface in filtering net 1 both sides.Between filter chamber 2 inner forward and backward walls, stiffening web 12 is housed as shown in Figure 8, stiffening web 12 connects filter chamber 2 forward and backward walls, the front and back wall of filter chamber is provided with a plurality of filtering net point of fixity 14, be used for fixing filter screen 1, variety of ways such as the fixed form of filter screen interlude such as screw thread, socket joint or press strip can.
As shown in Figure 9, all the turnover gas in the dynamic micro filter membrane assembly, the joint 15 of Inlet and outlet water can be made the structure that rectangular pipe 16 becomes pipe 17, so that reduce the thickness of filter chamber.Increase the packing density of membrane module.
A kind of dynamic micro filter membrane assembly water treatment process method may further comprise the steps:
1, Dynamic Membrane forms biofilm
Membrane module is placed the mixed solution of biochemical reactor, impel mixed solution to flow around filter screen by means such as aeration, recycle pumps and form surperficial cross-flow, through after a while, particles such as microorganism colloid adhere in screen surface and form Dynamic Membrane.
2, filter water outlet
Under the prerequisite that guarantees the surface cross-flow of mixed solution and Dynamic Membrane, by improving the pressure reduction between Dynamic Membrane both sides mixed solution and the filtrate, the water after biochemical treatment purifies leaches, and large particulate matter is blocked in the mixed solution;
3, the pollution of Dynamic Membrane
Through filtration after a while, Dynamic Membrane is polluted, and aquifer yield descends, and need stop water outlet, and Dynamic Membrane is regenerated.
4, the cleaning of Dynamic Membrane
Adopt bubble flush clean mode, air blasts gas-distribution pipe by the back flushing inlet pipe, and enter by aeration head in the passage of filtering net and filter chamber, in uphill process, Dynamic Membrane is washed away, rely on to improve the endogenous metabolism that dissolved oxygen concentration quickens Dynamic Membrane simultaneously, impel the Dynamic Membrane loose or dislocation, because of upwelling to water disturbance is less on every side, membrane module places mixed solution, or all can carry out bubble flush clean mode in the supernatant liquor of post precipitation.
5, the process of repetition 1～4 is gone round and begun again.
Wherein when the Dynamic Membrane surface contamination is serious, flush clean mode in the step 4 adopts air water bonded backwashing manner: elder generation is through the bubble flush clean of for some time, the Dynamic Membrane adhesive ability is reduced, carry out the waterpower backwash then, because the waterpower backwash is bigger to the water disturbance of membrane module unit, before hydrodynamic cleaning, make mud be sunken to the following certain depth of membrane module, prevent from when back flushing, to bring the bulk pollutent into filter chamber by the way that staticly settles.
Claims (6)
1. dynamic micro filter membrane assembly, comprise filter chamber and filtering net, it is characterized in that: have micropore on the wall before and after the filter chamber, backflushing water intake pipe is equipped with in the lower end, side, the middle and lower part, side is equipped with and is filtered out water pipe, the emptying tracheae is equipped with at the top, filtering net is converted on the front and back wall that concave-convex curved surface is individually fixed in filter chamber, the filter chamber lower surface links to each other with the back flushing gas distribution system, the back flushing gas distribution system comprises gas-distribution pipe and aeration head, the aeration head vertical distribution is in the gas-distribution pipe both sides, and aeration head is positioned at the passage between filtering net and filter chamber, is connected with inlet pipe on gas-distribution pipe, filter chamber is connected with the male and fomale(M﹠F) supporting parts in two ends up and down, be placed with filtering net on the male and fomale(M﹠F) supporting parts, male and fomale(M﹠F) presses solidly part and is fixed on the filtering net, and the inboard that the outside of male and fomale(M﹠F) supporting parts and male and fomale(M﹠F) press solidly part is and the corresponding curved surface in filtering net both sides.
2. a kind of dynamic micro filter membrane assembly according to claim 1 is characterized in that the passage between described filtering net and the filter chamber, vertically places mixed solution, when guaranteeing to adopt bubble flush clean mode, and can washing away to whole filtering net.
3. a kind of dynamic micro filter membrane assembly according to claim 1 is characterized in that between the inner forward and backward wall of described filter chamber stiffening web being housed, and stiffening web connects the forward and backward wall of filter chamber, and both sides are provided with a plurality of point of fixity before and after the filter chamber, are used for fixing filter screen.
4. a kind of dynamic micro filter membrane assembly according to claim 1 is characterized in that having the identical micropore in aperture on the wall of described filter chamber front and back, and the diameter of micropore is 0.5～5mm.
5. a processing method that adopts aforesaid right to require 1 described dynamic micro filter membrane assembly to carry out water treatment is characterized in that, may further comprise the steps:
1., Dynamic Membrane forms biofilm
Membrane module is placed the mixed solution of biochemical reactor, impel mixed solution around filter screen, to flow by wherein a kind of means of aeration, recycle pump or mode that both combine and form surperficial cross-flow, through after a while, microorganism colloid particle adheres in screen surface and forms Dynamic Membrane;
2., filter water outlet
Under the prerequisite that guarantees the surface cross-flow of mixed solution and Dynamic Membrane, by improving the pressure reduction between Dynamic Membrane both sides mixed solution and the filtrate, the water after biochemical treatment purifies leaches, and large particulate matter is blocked in the mixed solution;
3., the pollution of Dynamic Membrane
Through filtration after a while, Dynamic Membrane is polluted, and aquifer yield descends, and need stop water outlet, and Dynamic Membrane is regenerated;
4., the cleaning of Dynamic Membrane
Adopt bubble flush clean mode, air blasts gas-distribution pipe by the back flushing inlet pipe, and enter by aeration head in the passage of filtering net and filter chamber, in uphill process, Dynamic Membrane is washed away, rely on to improve the endogenous metabolism that dissolved oxygen concentration quickens Dynamic Membrane simultaneously, impel the Dynamic Membrane loose or dislocation, because of upwelling to water disturbance is less on every side, membrane module places mixed solution, or all can carry out bubble flush clean mode in the supernatant liquor of post precipitation;
5., repeat 1.～4. process, go round and begin again.
6. a kind of processing method that adopts aforesaid right to require 1 described dynamic potted circuit module to carry out water treatment according to claim 5, it is characterized in that when the Dynamic Membrane surface contamination is serious, 4. described step adopts air water bonded backwashing manner: elder generation is through the bubble flush clean of for some time, the Dynamic Membrane adhesive ability is reduced, carry out the waterpower backwash then, because the waterpower backwash is bigger to the water disturbance of membrane module unit, before hydrodynamic cleaning, make mud be sunken to the following certain depth of membrane module, prevent from when back flushing, to bring the bulk pollutent into filter chamber by the way that staticly settles.
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| CNB2005101355632A CN100349805C (en) | 2005-12-30 | 2005-12-30 | Dynamic micro filter membrane assembly and water treatment process method |
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| CNB2005101355632A CN100349805C (en) | 2005-12-30 | 2005-12-30 | Dynamic micro filter membrane assembly and water treatment process method |
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| CN100349805C true CN100349805C (en) | 2007-11-21 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481174B (en) * | 2009-02-10 | 2010-12-29 | 天津市天水环保设计工程有限公司 | V shaped groove type microgrid component capable of continuously on-line updating dynamic membrane and use method thereof |
| CN101481175B (en) * | 2009-02-17 | 2010-08-25 | 天津市天水环保设计工程有限公司 | V shaped groove type microgrid component capable of continuously on-line updating dynamic membrane and use method thereof |
| CN101554545B (en) * | 2009-04-14 | 2011-04-20 | 天津市天水环保设计工程有限公司 | Micro-net component with continuous mobile line-shaped backwash and distributed with shock absorption and application method thereof |
| CN101757854B (en) * | 2010-02-11 | 2011-07-27 | 曹达文 | Multi-pipe internal pressure mechanical circulation forced cross current solid-liquid separation dynamic membrane system and device thereof |
| CN102180542B (en) * | 2011-04-03 | 2012-07-25 | 江苏百纳环境工程有限公司 | Rapid and stable operation method of authigene dynamic membrane component |
| CN104098171A (en) * | 2013-04-11 | 2014-10-15 | 北京朗新明环保科技有限公司 | Water inlet and gas distribution device of novel gas lifting circulating membrane bioreactor (MBR) |
| US10195549B1 (en) * | 2017-11-21 | 2019-02-05 | Aqua-Aerobic Systems, Inc. | Backwash shoe method and apparatus that increases effective surface area of cloth filter media |
| CN112006265A (en) * | 2020-07-31 | 2020-12-01 | 绍兴仁昌酱园有限公司 | Method for preparing fresh soy sauce |
| CN114699932B (en) * | 2022-03-23 | 2023-05-16 | 深圳市东方祺胜实业有限公司 | Dynamic membrane filter and method for treating sewage using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5393433A (en) * | 1992-03-11 | 1995-02-28 | Aquasource, Societe En Nom Collectif | Method using separation membranes to treat a fluid containing matter in suspension and in solution |
| CN1302771A (en) * | 2001-01-10 | 2001-07-11 | 庄彦杰 | Full-automatic purifying pool |
| US6274020B1 (en) * | 2000-04-28 | 2001-08-14 | Ernst Schmidt | Electrodialysis membrane and gasket stack system |
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2005
- 2005-12-30 CN CNB2005101355632A patent/CN100349805C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5393433A (en) * | 1992-03-11 | 1995-02-28 | Aquasource, Societe En Nom Collectif | Method using separation membranes to treat a fluid containing matter in suspension and in solution |
| US6274020B1 (en) * | 2000-04-28 | 2001-08-14 | Ernst Schmidt | Electrodialysis membrane and gasket stack system |
| CN1302771A (en) * | 2001-01-10 | 2001-07-11 | 庄彦杰 | Full-automatic purifying pool |
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