CN101780349B - Multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system and device - Google Patents
Multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system and device Download PDFInfo
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- CN101780349B CN101780349B CN2010101238165A CN201010123816A CN101780349B CN 101780349 B CN101780349 B CN 101780349B CN 2010101238165 A CN2010101238165 A CN 2010101238165A CN 201010123816 A CN201010123816 A CN 201010123816A CN 101780349 B CN101780349 B CN 101780349B
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Abstract
The invention relates to multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system and device. The dynamic membrane device comprises a plurality of large-aperture net tubular external-compression type supporting bodies, a water purification cavity, an upper cover and a shell, wherein the inner cavity of the water purification cavity forms a water purification chamber, a plurality of through holes and a plurality of purified water outlets are arranged on the water purification cavity, and a plurality of supporting body connecting holes are arranged on a lower end plate of the water purification cavity; all the tubular external-compression type supporting bodies are communicated with the water purification cavity through the supporting body connecting holes; the upper cover is connected to the upper part of the water purification cavity and forms a cross flow backflow chamber together with the water purification cavity, and a cross flow backflow water outlet is arranged on the upper cover; the shell is connected to the lower part of the water purification cavity and forms a water inlet chamber together with the water purification cavity; and a raw water inlet is arranged on the shell. The multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane device has the advantages of no hydraulic dead angle, short precoating time, convenient backwashing, capability of continuously working, membrane flux increase of the dynamic membrane, stable water yield and long work cycle.
Description
Technical field
The present invention relates to feedwater/sewage disposal technology, relate in particular to a kind of multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system and device.
Background technology
Enter 21 century, the water treatment application of membrane separation technology more and more widely.The Dynamic Membrane isolation technics, because its counter investment cost is low, film pollutes control easily, low power consumption and other advantages becomes when cephacoria research focus.
Dynamic Membrane (Dynamic membrane) can be called secondary film (second membrane) again, is meant the new film that forms in micro-filtration membrane, milipore filter or large aperture supporting body surface by precoating paint or activated sludge.The formation of Dynamic Membrane can slow down micro-filtration membrane, the ultrafiltration face stops up (Block) and film pollutes (Fouling), or improves the interception capacity of macropore supporter.Dynamic Membrane generally is divided into two types of spontaneous film and pre-coating films: spontaneous film only needs to rely on material in the separated mixture, and pre-coating film then needs to add one or more specific components materials in the water that separates, and forms by direct or precoating circulation.
The material and the Dynamic Membrane device form that can be used as dynamic membrane support body are a lot, for example, with organic material cellulose acetate, polyacrylonitrile (PAN), Kynoar (PVDF), polyvinyl chloride (PVC), sintering polyethylene (PE), polysulfones (PS) etc., and micro-filtration membrane or the milipore filter made such as inorganic material sintered ceramic, sintering metal particulate filter stick, and macropore nylon wire, stainless (steel) wire or nonwoven cloth material, all can be used as the supporter of Dynamic Membrane.
Generally, the backing material that is formed by sintering such as plastics, pottery, metals is called porous material, and backing materials such as stainless (steel) wire, nylon wire, polythene net and industrial filter cloth, nonwoven are called the large aperture net.Porous material and large aperture net are played a supporting role to Dynamic Membrane, so be called the supporter of Dynamic Membrane.
At feedwater/sewage/liquor industry, often there is a large amount of solid particle polluters in feedwater, sewage or the wine brewing, generally solid particle polluter is separated by Separation of Solid and Liquid.In addition,, need in water, add tiny solid particulate matter at sewage/give in the water treatment procedure, as activated sludge, Powdered Activated Carbon, diatomite etc., the organic substance in these particle mass-energy adsorbed water or on the superficial growth bacterium, and play biochemical action.These particulate matters are finished after the effect that purifies water, and need again it is separated from water, carry out Separation of Solid and Liquid.Generally, the dynamic membrane support body that is applied to Separation of Solid and Liquid needs following characteristics: material has certain intensity, can not subside after Dynamic Membrane forms; Dynamic Membrane comes off in the flushing engineering easily; Supporter is durable in use, can not be corroded and mechanical failure; Cost is low.
The aperture of porous material and the particulate matter particle diameter in the water are basic identical, so these intergranular slits are exactly the passage that liquid flows into.These passages are very tortuous, though can guarantee the precision of filtering, stopped up by tiny particulate matter easily; And the also easy breed bacteria in these slits, the thick substances of bacterium surface also can block the slit.The filter membrane that organic matter is made, milipore filter by the particulate matter damage and failure, influence filtering accuracy easily.In addition, these slits are in the inside of porous material, and method such as be not easy to use backwash, wash, scrub solves the problem that the slit is blocked, and therefore flux sharply descends, and it is not high to reuse efficient.And the large aperture net its aperture generally be tens times of particulate matter to hundred times.Particulate matter in the water can produce arch formation, and be held back by the large aperture net in surperficial by it, does not subside, and progressively thickens, and forms cake layer (filter membrane).Current are then by the slit flow filter cake layer between the particulate matter that forms cake layer, and by the large aperture net, particulate matter is trapped.This process is very similar to the filter process of porous material, and filtering accuracy depends on the size of particulate matter particle diameter.When flux reduces to a certain degree, just can carry out backwash, wash and scrub.Cake layer is easy to come off from the large aperture net surface.Pass through the precoating particulate matter again at the large aperture net surface, form cake layer, can begin filter process next time again.Cake layer also is a Dynamic Membrane.Therefore, according to above-mentioned requirements, the large aperture net more is better than the Dynamic Membrane backing material of porous material as Separation of Solid and Liquid.
State Patent Office's application number a kind of filtering apparatus for drinking water that has been 96229378.4 patent disclosure sees also Fig. 1 to Fig. 2, and it is respectively the structural representation of State Patent Office's application number 96229378.4 filtering apparatus for drinking water and filter element thereof.This filtering apparatus for drinking water comprises that top cover 11, top are that cylindrical, bottom is conical housing 12 and is installed in its inner filter element 13 and constitutes.Top cover 11 is connected with housing 12 usefulness flanges.Porose dividing plate 14 is arranged between top cover 11 and the housing 12, filter element 13 is fixedly mounted on the porose dividing plate 14, and filter element 13 is by annular top board 15, post 16, and steel wire 17, base plate 18, steel loop 19 firmly are formed by connecting, filter element center pillar 16 is the hexagon setting, coated outside steel wire 17.Post 16 is earlier by copper ring 19 tensioning from inside to outside, thereby steel wire 17 also is tensioned and is hexagon, the distortion of steel wire 17 under filter pressure is restricted, and then post 16 is fixedlyed connected with base plate 18 with top board 15 respectively.Device is present precoating diatomite slurries on the steel wire 17 of filter element 13 in the running, as filter membrane, begin water filtration subsequently, behind drainage after a while, the filter membrane on the back flush filter element 13 rinses out filter membrane, and filter element also rinsed well, and then begin new precoating-filtration.This filtering apparatus for drinking water adopts wide-aperture steel wire to carry out Separation of Solid and Liquid as the supporter of Dynamic Membrane, can be effectively except that harmful material in anhydrating.But also there is following defective in this device:
1, this filtering apparatus for drinking water adopts the large aperture net and adopts the end-filtration mode, unidirectional water outlet, thereby in filter element, form the waterpower dead angle, and, lean on waterpower diffusion distributed granule during the end-filtration precoating, cause film forming thickness inhomogeneous easily, effectively controlling diaphragm thickness and film formation time are long, have the structure defective., simultaneously, in the prior art, generally believe that large aperture net supporter adopts cross-flow filtration mode precoating film forming difficulty, and in running, the Dynamic Membrane instability, therefore, existing large aperture supporter assembly all adopts the end-filtration mode, has the structure defective
2, the filter element of this filtering apparatus for drinking water comprises all multiple components, and complex structure not only also makes its manufacturing procedure complexity, cost height.
Summary of the invention
The object of the present invention is to provide a kind of multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system, can form waterpower dead angle and film forming thickness inequality, the long technical problem of film formation time because of the structure defective to solve prior art large pore dynamic membrane support body assembly.
Another object of the present invention is to provide a kind of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device, can form waterpower dead angle and film forming thickness inequality, the long technical problem of film formation time because of the structure defective to solve prior art large pore dynamic membrane support body assembly.
For achieving the above object, the invention provides a kind of multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system, comprise a plurality of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane devices and somely advance, outfall sewer, each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device is by advancing, the outfall sewer assembling in parallel that is arranged in parallel, wherein, each Dynamic Membrane device comprises again: a plurality of tubular external-compression type supporters, the water purification cavity, loam cake and housing, water purification cavity internal cavities forms water purifying chamber, and the water purification cavity is provided with some through holes and some water purification delivery ports, is provided with some supporter connecting holes on its bottom plate again; Each tubular external-compression type supporter is communicated with the water purification cavity by the supporter connecting hole, and each tubulose external-compression type supporter comprises one at least in order in its outer wall formation Dynamic Membrane and to the porous thin-walled tube that feeds water or sewage is handled, and porous thin-walled tube is the large aperture net; Loam cake is connected to water purification cavity top, form the cross-flow return passage with the water-purifying cavity body, and loam cake is provided with cross-flow recirculation water delivery port; Housing is connected to water purification cavity bottom, forms intake chamber with the water-purifying cavity body, and housing is provided with raw water inlet, and the through hole on raw water inlet, intake chamber, the water purification cavity, cross-flow return passage and cross-flow recirculation water go out interruption-forming one aquaporin that refluxed.
According to the described multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of preferred embodiment of the present invention, its each tubulose external-compression type supporter also comprises a hollow support skeleton, the hollow support skeleton is connected with the porous thin-walled tube socket, in order to support porous thin-walled tube.
According to the described multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of preferred embodiment of the present invention, its hollow support skeleton comprises some supporting ribs, and supporting rib is the taper surface structure.
According to the described multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of preferred embodiment of the present invention, its Dynamic Membrane device also comprises seal, the sealing part is connected to each tubulose external-compression type supporter bottom, in order to form sealing in tubular external-compression type supporter bottom.
According to the described multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of preferred embodiment of the present invention, its seal is a deflection cone.
According to the described multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of preferred embodiment of the present invention, also be provided with a backwash water inlet on its water purification cavity, the backwash water inlet is communicated with water purifying chamber, in order to the tubular external-compression type supporter is carried out backwash.
The present invention also provides a kind of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device, comprise a plurality of tubular external-compression type supporters, water purification cavity, loam cake and housing, water purification cavity internal cavities forms water purifying chamber, and the water purification cavity is provided with some through holes and some water purification delivery ports, is provided with some supporter connecting holes on its bottom plate again; Each tubular external-compression type supporter is communicated with the water purification cavity by the supporter connecting hole, and each tubulose external-compression type supporter comprises one at least in order in its outer wall formation Dynamic Membrane and to the porous thin-walled tube that feeds water or sewage is handled, and porous thin-walled tube is the large aperture net; Loam cake is connected to water purification cavity top, form the cross-flow return passage with the water-purifying cavity body, and loam cake is provided with cross-flow recirculation water delivery port; Housing is connected to water purification cavity bottom, forms intake chamber with the water-purifying cavity body, and housing is provided with raw water inlet, and the through hole on raw water inlet, intake chamber, the water purification cavity, cross-flow return passage and cross-flow recirculation water go out interruption-forming one aquaporin that refluxed.
According to the described multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid of preferred embodiment of the present invention Dynamic Membrane device, its each tubulose external-compression type supporter also comprises a hollow support skeleton, the hollow support skeleton is connected with the porous thin-walled tube socket, in order to support porous thin-walled tube.
According to the described multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid of preferred embodiment of the present invention Dynamic Membrane device, its hollow support skeleton comprises some supporting ribs, and supporting rib is the taper surface structure.
According to the described multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid of preferred embodiment of the present invention Dynamic Membrane device, it also comprises seal, and seal is connected to each tubulose external-compression type supporter bottom, in order to form sealing in tubular external-compression type supporter bottom.
According to the described multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid of preferred embodiment of the present invention Dynamic Membrane device, its seal is a deflection cone.
According to the described multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid of preferred embodiment of the present invention Dynamic Membrane device, also be provided with a backwash water inlet on its water purification cavity, the backwash water inlet is communicated with water purifying chamber, in order to the tubular external-compression type supporter is carried out backwash.
Dynamic Membrane device of the present invention has been broken through the traditional concept that the large aperture supporter is not suitable for adopting the cross-flow filtration mode, its support body material adopts the large aperture net and adopts the cross-flow filtration mode, effectively overcome the structure defective that existing large aperture supporter is set up, compared with prior art, the present invention has the following advantages:
When 1, Dynamic Membrane device of the present invention moves, recirculation water flows out along the water inlet direction, water purification flows into tubular external-compression type supporter inside perpendicular to the tubular external-compression type supporter, two water outlet directions are vertical mutually, in service have a cross-flow always, can reduce the waterpower dead angle of dynamic membrane support body to greatest extent, guarantee the water outlet quality.And supporting body surface can be evenly flow through in cross-flow, and film forming has significantly reduced the precoating time quickly and evenly, and film formation time is short and film thickness is even, effectively controlling diaphragm thickness.
2, Dynamic Membrane device of the present invention adopts the cross-flow mode to filter, cross-flow can be taken away the particulate matter on Dynamic Membrane surface, when the particulate matter of new accumulation is suitable with the particulate matter quantity of being taken away by cross-flow, Dynamic Membrane thickness remains unchanged, cross water flux and just can keep constant, water quality also can be stablized.Therefore,, just can effectively control the thickness of Dynamic Membrane, keep the water purification water yield stable, prolong the work period greatly by regulating the flow velocity of recirculation water.
3, the tubular external-compression type supporter of Dynamic Membrane device of the present invention adopts tubular structure, and tube wall is stressed evenly also to bear bigger pressure, can improve water feeding pressure, increases Dynamic Membrane pressure reduction, improves membrane flux.This supporter only comprises porous thin-walled tube and hollow support skeleton, and simple in structure, easy to assembly, cost is low.And hollow support skeleton supporting rib is the taper surface structure, can obtain optimized hydraulics, causes problems such as developing result difference owing to stopping up effective area of passage of minimizing and recoil current skewness when effectively avoiding the Dynamic Membrane precoating.
4, Dynamic Membrane device of the present invention is easy to assembly, and being together in parallel by house steward between the water inlet of each device, the delivery port just can be assembled into a cover system, realizes concentrating water inlet, water outlet, can handle the feedwater/sewage of different flow.
5, the support body material of Dynamic Membrane device of the present invention adopts the large aperture net, and backwash is easy, and no face stops up and film pollutes, and Dynamic Membrane comes off easily from network.Dynamic Membrane is just broken up by the cross-flow backwater after coming off and is pulled away, and can not produce deposition.
Description of drawings
Fig. 1 is the structural representation of State Patent Office's application number 96229378.4 filtering apparatus for drinking water;
Fig. 2 is the structural representation of the filter element of State Patent Office's application number 96229378.4 filtering apparatus for drinking water;
Fig. 3 is the structural representation of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the present invention;
Fig. 4 is the structure cutaway view of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the present invention;
Fig. 5 is the structural representation of the tubular external-compression type supporter of the embodiment of the invention;
Fig. 6 is the application schematic diagram of the multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the embodiment of the invention;
Fig. 7 is the application schematic diagram of the multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of the embodiment of the invention;
The specific embodiment
Below in conjunction with accompanying drawing, specify the present invention.
See also Fig. 3 to Fig. 4, it is respectively the structural representation and the structure cutaway view of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the present invention.This multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 20 comprises: a plurality of tubular external-compression type supporters 21, water purification cavity 22, loam cake 23, housing 24 and deflection cone 25, water purification cavity 22 internal cavities form water purifying chamber 26, and water purification cavity 22 is provided with one in order to discharge the water after filtering, and carry out the water purification delivery port 221 of backwash and some usefulness so that the cross-flow recirculation water is the through hole that unfiltered water flows through in order to the precoating circulating reflux of Dynamic Membrane and to tubular external-compression type supporter 21, be provided with some supporter connecting holes on its bottom plate again in order to be connected with tubular external-compression type supporter 21.Each tubular external-compression type supporter 21 is communicated with water purification cavity 22 by the supporter connecting hole, and deflection cone 25 is connected to tubular external-compression type supporter 21 bottoms, seals in order to form in tubular external-compression type supporter 21 bottoms, and can reduce the waterpower dead angle to greatest extent.Loam cake 23 is connected to water purification cavity 22 tops, forms cross-flow return passages 27 with water purification cavity 22, and loam cake 23 is provided with cross-flow recirculation water delivery port 231, in order to discharge unfiltered water.Housing 24 is connected to water purification cavity 22 bottoms, form intake chamber 28 with water purification cavity 22, and housing 24 is provided with raw water inlet 241, send into intake chamber 28 in order to the feedwater or the sewage that will need to handle, the through hole on raw water inlet 241, intake chamber 28, the water purification cavity 22, cross-flow return passage 27 and cross-flow recirculation water outlet 234 form the aquaporin that refluxed.
See also Fig. 5, the structural representation of the tubular external-compression type supporter of its embodiment of the invention.This tubular external-compression type supporter 21 comprises porous thin-walled tube 211 and hollow support skeleton 212, porous thin-walled tube 211 is in order to form Dynamic Membrane and feedwater or sewage are handled at its outer surface, hollow support skeleton 212 is socketed in porous thin-walled tube 211 inboards, in order to support porous thin-walled tube 211, hollow support skeleton 212 comprises a plurality of supporting ribs, each supporting rib is the taper surface structure, can obtain optimized hydraulics, cause problems such as developing result difference owing to stopping up effective area of passage of minimizing and recoil current skewness when effectively avoiding the Dynamic Membrane precoating.
Porous thin-walled tube 211 is the large aperture net, specifically can adopt macropore nylon wire, polythene net, polypropylene net, nonwoven, industrial filter cloth and stainless (steel) wire, copper mesh etc.
In this example,, be provided with hollow support skeleton 212 in porous thin-walled tube 211 inboards, prevent that porous thin-walled tube 211 from deformation taking place to support porous thin-walled tube 211 for the bulk strength of reinforcement tubular external-compression type supporter 21.But, need to prove, the present invention is not limited thereto, intensity at porous thin-walled tube 211 enough supports under the situation of Dynamic Membrane, also hollow support skeleton 212 can be set, and by porous thin-walled tube 211 independent support Dynamic Membrane, and hollow support skeleton 212 also can be socketed in porous thin-walled tube 211 outsides.Therefore, adopt more than that to come the bulk strength of reinforcement tubular external-compression type supporter 21 at porous thin-walled tube 211 arranged outside hollow support skeletons 212 be an example, and be not used in qualification the present invention.In addition, the cross section of tubular external-compression type supporter 21 of the present invention can be circular, oval or hexagonal, also can be rectangle, even can be difform no matter adopt which kind of shape, all within protection scope of the present invention.
In this example, both as the precoating circulating reflux of operation delivery port and Dynamic Membrane, the while was also as the backwash water inlet, during backwash for water purification delivery port 221, water under high pressure or gas enter tubular external-compression type supporter 21 by water purification delivery port 221, and tubular external-compression type supporter 21 is carried out backwash.But the present invention is not limited thereto, in preferred embodiment of the present invention, can also simultaneously a backwash water inlet be set on water purification cavity 22, directly by the backwash water inlet tubular external-compression type supporter 21 carried out backwash.Therefore, more than be an example as the backwash water inlet simultaneously with water purification delivery port 221, and be not used in qualification the present invention.In addition, in this example, only be provided with a water purification delivery port 221, but, the present invention is not concrete quantity and the position that limits water purification delivery port 221 with this, the concrete quantity of water purification delivery port 221 can be selected according to the requirement of water yield in the practical application, and it can be arranged on the optional position of water purification cavity 22.More than adopt just example of a water purification delivery port 221, and be not used in qualification the present invention.
In the above-described embodiment, in order to reduce the waterpower dead angle to greatest extent, adopted deflection cone 25 as seal.But the present invention does not limit the concrete form of seal, and it can adopt deflection cone 25, can also adopt other shapes to carry out water conservancy diversion, even water conservancy diversion can be set, more than adopting deflection cone 25 is an example as seal, and is not used in qualification the present invention.
Can use flange to be connected between the water purification cavity 22 of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 20 of the present invention and loam cake 23 and the housing 24, can make otherwise to connect yet, the present invention is not limited.
Multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the present invention is realized the division of water purifying chamber, cross-flow return passage and three chambers of intake chamber by water purification cavity, loam cake and housing are set, thereby realization cross-flow filtration, but, can also adopt dividing plate to replace the water purification cavity in actual applications, realize the division of three chambers.In addition, in actual applications, the connective stability that support comes reinforcement tubular external-compression type supporter can also be set between each supporter and housing.
Please participate in Fig. 6, it is a kind of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device application schematic diagram of the embodiment of the invention.For ease of explanation, Fig. 5 is the primary clustering symbol of continuing to use among Fig. 3.
Multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the present invention is mainly used in the Separation of Solid and Liquid of feedwater/sewage/liquor industry., be that example describes below with the Separation of Solid and Liquid that is applied to sewage disposal for convenient narration.
The raw water inlet 241 of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 20 of the present invention is connected with former pond 602 by water pump 601, cross-flow recirculation water delivery port 231 is connected to former pond 602, and each water inlet, delivery port also can be connected with valve or valve sets.Store the sewage that contains a large amount of particulate matters in the former pond 602.
Multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 20 of the present invention does not need to smear in advance precoating paint, precoating paint is particulate matters such as activated sludge, Powdered Activated Carbon, diatomite, those particulate matters are directly to put into former pond 602 or handling procedure formerly adds, and carry out precoating during operation.Its concrete course of work is as follows:
Use water pump 601 that the sewage in the former pond 602 is pumped into raw water inlet 241, sewage and tiny particulate matter enter intake chamber 28 by raw water inlet 241, part sewage flows to tubular external-compression type supporter 21 inside by tubular external-compression type supporter 21 outer surfaces, at this moment, fine particulate material in the sewage can be dammed by tubular external-compression type supporter 21 outer surfaces, be collected on tubular external-compression type supporter 21 outer surfaces, progressively form Dynamic Membrane 603.During precoating, the sewage after tubular external-compression type supporter 21 dams returns former pond 602 by water purification delivery port 221, and water purification delivery port 221 is as the precoating circulating reflux of Dynamic Membrane 603.Another part sewage directly flows out by cross-flow recirculation water delivery port 231 through cross-flow return passage 27, returns former pond 602.
After precoating a period of time, Dynamic Membrane 603 can cover on the outer surface of tubular external-compression type supporter 21 equably, and progressive additive, forms stable Dynamic Membrane 603.Dynamic Membrane 603 is formed by small solid particulate matter, has filtration, can filter the particulate matter in most of sewage, and the water that makes out is not for containing the water purification of particulate matter.After Dynamic Membrane 603 forms, begin sewage is filtered: filter the water purification that obtains through Dynamic Membrane 603 and enter tubular external-compression type supporter 21 inside, enter water purifying chamber 26, discharge, collect by the water purification that water purification delivery port 221 is discharged and promptly finish sewage disposal by water purification delivery port 221; The sewage that filters through Dynamic Membrane 603 is not flowed out by cross-flow recirculation water delivery port 231 through cross-flow return passage 27, returns former pond 602, reenters filtration treatment next time.Because recirculation water flows out along the water inlet direction, water purification flows out into tubular external-compression type supporter inner chamber perpendicular to tubular external-compression type supporter 21 outer surfaces, two water outlet directions are vertical mutually, form cross-flow, can reduce the waterpower dead angle of dynamic membrane support body to greatest extent, can also reduce the precoating time, guarantee the water outlet quality.When filtering, can also control the ratio of the backflow water yield and water purification amount by adjusting control valve door or valve sets, can reach the purpose of optimizing process conditions.
A period of time after filtration, gap between Dynamic Membrane 603 intramembranous particles can be stopped up by the impurity in the sewage, served as the membrane flux ratio of Dynamic Membrane effective area (the water purification water yield with) when gradually reducing certain value, begin to carry out backwash, the tubular external-compression type supporter 21 of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device is carried out demoulding.At this moment, inject water under high pressure or gases by water purification delivery port 221 to tubular external-compression type supporter 21 inside, make tubular external-compression type supporter 21 pressure inside greater than the pressure in the intake chamber 28, make water oppositely flow to intake chamber 28 by tubular external-compression type supporter 21 inside, under the effect of current, the Dynamic Membrane 503 that covers on tubular external-compression type supporter 21 outer surfaces is dashed, and then by recirculation water towards broken, and carried by recirculation water and to leave tubular external-compression type supporter 21 outer surfaces, get back in the former pond 602, and can be on tubular external-compression type supporter 21 outer surfaces and intake chamber form deposition.
Begin precoating after backwash is finished once more, make tubular external-compression type supporter 21 outer surfaces form Dynamic Membrane 603 once more, so the sewage in the former pond 602 is filtered in circulation, obtains water purification.In the whole service process, promptly as the precoating circulating reflux of operation delivery port and Dynamic Membrane 603, the while is also as the backwash water inlet for water purification delivery port 241.
The present invention also provides a kind of multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system, comprise a plurality of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane devices, the assembling in parallel that is arranged in parallel of each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device, wherein, this multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device is identical with the multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane apparatus structure of the foregoing description, does not repeat them here.This multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system also comprises some water-in and water-out house stewards, those water-in and water-out house stewards specifically comprise former water water inlet manifold, cross-flow recirculation water outfall sewer and some water purification outfall sewers, and former water water inlet manifold is connected with the raw water inlet of each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device; Cross-flow recirculation water outfall sewer is connected with the cross-flow recirculation water delivery port of each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device; The water purification outfall sewer is connected with the water purification delivery port of corresponding each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device.When the multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device that is provided with the backwash water inlet when employing is assembled this system, the water-in and water-out house steward can also comprise that a backwash goes into the supply mains, and this backwash is gone into the supply mains and is connected with the backwash water inlet of each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device.In addition, the quantity of water purification outfall sewer can be corresponding with the quantity of the water purification delivery port of each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device, also can only be provided with one, if according to the quantity of the water purification delivery port of each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device the water purification outfall sewer of respective numbers is set, then the water purification delivery port on each Dynamic Membrane device is connected with the water purification outfall sewer with corresponding the; If only a water purification outfall sewer is set, then all water purification delivery ports all are connected to the water purification outfall sewer on each Dynamic Membrane device.Concrete water-in and water-out house steward's kind and quantity are provided with according to the structure of selected Dynamic Membrane device, and the present invention is not limited.
See also Fig. 7, it is the application schematic diagram of the multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of the embodiment of the invention.
The former water water inlet manifold 701 of the multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system 70 of present embodiment is connected with former pond 705 by water pump 704, cross-flow recirculation water outfall sewer 702 is connected to former pond 705, and the water inlet of each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 20, delivery port also are connected with one group of by-pass valve control.Storage be pending liquid in the former pond 705, and as the former water that feeds water, sewage, wine brewing stoste etc., precoating paint is thrown in former pond 705.Pending liquid during operation in the former pond 705 enters each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 20 by former water water inlet manifold 701, during precoating, pending liquid after each Dynamic Membrane device dams returns former pond 705 by water purification house steward 703, and water purification house steward 703 is as the precoating circulating reflux of Dynamic Membrane.The pending liquid of another part directly returns former pond 705 by cross-flow recirculation water outfall sewer 702.During filtration, water purification is flowed out by water purification house steward 703 to be collected, and undressed pending liquid returns former pond 705 by cross-flow recirculation water outfall sewer 702.During backwash, use water under high pressure or gas to enter each assembly by water purification house steward 703, each assembly is washed, the concrete course of work of each single component no longer repeats at this as previously mentioned.
Above-mentioned multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system can carry out precoating and backwash to all multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane devices simultaneously, each component synchronization operation has realized concentrated water inlet, water outlet.System of the present invention can also control the precoating and the backwash of each Dynamic Membrane device by the adjusting control valve door, when making a Dynamic Membrane device be in precoating or backwash, other Dynamic Membrane devices are in the course of work, normal water outlet, whole system is continuous, steady operation, can handle the feedwater/sewage of different flow.
Multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of the present invention can have the disposal ability of different stage according to the specification of the multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device that it adopts, applying flexible can satisfy the demand of varying environment.When the Dynamic Membrane device comprises less tubulose inner pressed supporter, system less into and out of the water yield, disposal ability is lower; When the Dynamic Membrane device comprises more tubulose inner pressed supporter, system big into and out of the water yield, disposal ability is strong.In addition, in actual applications, also single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of the present invention further can be assembled into a two stage treatment system bigger into and out of the water yield, that disposal ability is stronger by some secondary water-in and water-out house stewards as required.
More than disclosed only be several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, all should drop in protection scope of the present invention.
Claims (12)
1. multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system, it is characterized in that, comprise a plurality of multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane devices and somely advance, outfall sewer, described each multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device advances by described, the outfall sewer assembling in parallel that is arranged in parallel, wherein, each described Dynamic Membrane device comprises again: a plurality of tubular external-compression type supporters, the water purification cavity, loam cake and housing, described water purification cavity internal cavities forms water purifying chamber, and described water purification cavity is provided with some through holes and some water purification delivery ports, is provided with some supporter connecting holes on its bottom plate again; Described each tubular external-compression type supporter is communicated with described water purification cavity by described supporter connecting hole, each tubulose external-compression type supporter comprises a porous thin-walled tube in order to form Dynamic Membrane at its outer wall and feedwater or sewage are handled at least, and described porous thin-walled tube is the large aperture net; Described loam cake is connected to described water purification cavity top, form the cross-flow return passage with described water-purifying cavity body, and described loam cake is provided with cross-flow recirculation water delivery port; Described housing is connected to described water purification cavity bottom, form intake chamber with described water-purifying cavity body, and described housing is provided with raw water inlet, and the through hole on described raw water inlet, intake chamber, the water purification cavity, cross-flow return passage and cross-flow recirculation water go out interruption-forming one aquaporin that refluxed.
2. multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system as claimed in claim 1, it is characterized in that, described each tubulose external-compression type supporter also comprises a hollow support skeleton, described hollow support skeleton is connected with described porous thin-walled tube socket, in order to support described porous thin-walled tube.
3. multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system as claimed in claim 2 is characterized in that, described hollow support skeleton comprises some supporting ribs, and described supporting rib is the taper surface structure.
4. multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system as claimed in claim 1, it is characterized in that, described Dynamic Membrane device also comprises seal, described seal is connected to described each tubulose external-compression type supporter bottom, in order to form sealing in described tubular external-compression type supporter bottom.
5. multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system as claimed in claim 4 is characterized in that, described seal is a deflection cone.
6. multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system as claimed in claim 1, it is characterized in that, also be provided with a backwash water inlet on the described water purification cavity, described backwash water inlet is communicated with described water purifying chamber, in order to described tubular external-compression type supporter is carried out backwash.
7. multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device, it is characterized in that, comprise a plurality of tubular external-compression type supporters, water purification cavity, loam cake and housing, described water purification cavity internal cavities forms water purifying chamber, and described water purification cavity is provided with some through holes and some water purification delivery ports, is provided with some supporter connecting holes on its bottom plate again; Described each tubular external-compression type supporter is communicated with described water purification cavity by described supporter connecting hole, each tubulose external-compression type supporter comprises a porous thin-walled tube in order to form Dynamic Membrane at its outer wall and feedwater or sewage are handled at least, and described porous thin-walled tube is the large aperture net; Described loam cake is connected to described water purification cavity top, form the cross-flow return passage with described water-purifying cavity body, and described loam cake is provided with cross-flow recirculation water delivery port; Described housing is connected to described water purification cavity bottom, form intake chamber with described water-purifying cavity body, and described housing is provided with raw water inlet, and the through hole on described raw water inlet, intake chamber, the water purification cavity, cross-flow return passage and cross-flow recirculation water go out interruption-forming one aquaporin that refluxed.
8. multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device as claimed in claim 7, it is characterized in that, described each tubulose external-compression type supporter also comprises a hollow support skeleton, described hollow support skeleton is connected with described porous thin-walled tube socket, in order to support described porous thin-walled tube.
9. multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device as claimed in claim 8 is characterized in that described hollow support skeleton comprises some supporting ribs, and described supporting rib is the taper surface structure.
10. multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device as claimed in claim 7, it is characterized in that, it also comprises seal, and described seal is connected to described each tubulose external-compression type supporter bottom, in order to form sealing in described tubular external-compression type supporter bottom.
11. multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device as claimed in claim 10 is characterized in that described seal is a deflection cone.
12. multi-pipe external-compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device as claimed in claim 7, it is characterized in that, also be provided with a backwash water inlet on the described water purification cavity, described backwash water inlet is communicated with described water purifying chamber, in order to described tubular external-compression type supporter is carried out backwash.
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| CN2010101238165A CN101780349B (en) | 2010-02-11 | 2010-02-11 | Multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system and device |
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| CN2010101238165A CN101780349B (en) | 2010-02-11 | 2010-02-11 | Multi-pipe external-compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system and device |
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| CN101780349B true CN101780349B (en) | 2011-07-20 |
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| CN102895820A (en) * | 2011-07-27 | 2013-01-30 | 广东粤海控股有限公司 | Dynamic membrane filter for water treatment |
| CN109260953A (en) * | 2018-10-14 | 2019-01-25 | 苏州五颗星特种超滤膜科技有限公司 | Ultrafiltration apparatus |
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| DE4237714C2 (en) * | 1992-11-09 | 1996-02-29 | Isp Investments Inc | Crossflow precoat filtration process |
| CN2273703Y (en) * | 1996-03-01 | 1998-02-04 | 同济大学 | Filtering apparatus for drinking water |
| CN201620067U (en) * | 2010-02-11 | 2010-11-03 | 曹达文 | Multi-pipe external-pressure mechanical circular dynamic film system and device used for forcible cross-flow solid-liquid separation |
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