CN101733000A - Single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system and device - Google Patents
Single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system and device Download PDFInfo
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- CN101733000A CN101733000A CN 201010123807 CN201010123807A CN101733000A CN 101733000 A CN101733000 A CN 101733000A CN 201010123807 CN201010123807 CN 201010123807 CN 201010123807 A CN201010123807 A CN 201010123807A CN 101733000 A CN101733000 A CN 101733000A
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Abstract
The invention relates to single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system and device. The dynamic membrane device comprises a tubular internal compression type supporting body of a large-aperture net and a shell arranged outside the tubular internal compression type supporting body, wherein the interior of the shell and the exterior of the tubular internal compression type supporting body form a water purifying chamber; a raw water inlet and a plurality of purified water outlets are arranged on the shell; the raw water inlet is arranged at the lower end of the shell and communicated with the tubular internal compression type supporting body, and the purified water outlets are arranged on the shell and communicated with the water purifying chamber; a cross flow and backflow water outlet is also arranged on the shell; and the cross flow and backflow water outlet is arranged at the upper end of the shell and communicated with the tubular internal compression type supporting body. The single-pipe internal 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 back wash, continuous working, improved dynamic membrane flux, stable water yield and long working period.
Description
Technical field
The present invention relates to feedwater/sewage disposal technology, relate in particular to a kind of single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system and device that reduces the waterpower dead angle.
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 kit 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 to filter precision, 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, this filtering apparatus for drinking water adopts the external-compression type filter type, and it is little to cross water pressure, and current have some setbacks, and have increased the waterpower dead angle to a certain extent.
3, owing to adopt external-compression type to filter, for preventing the supporter distortion, in supporter inside a plurality of support center pillars need be set, filter element 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 single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system, prior art large pore dynamic membrane support body assembly can form the waterpower dead angle because of the structure defective and film forming thickness inequality, film formation time length and flushing are not thorough to solve, and easily produces the technical problem of deposition.
Another object of the present invention is to provide a kind of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device, prior art large pore dynamic membrane support body assembly can form the waterpower dead angle because of the structure defective and film forming thickness inequality, film formation time length and flushing are not thorough to solve, and easily produces the technical problem of deposition.
For achieving the above object, the invention provides a kind of single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system, this system comprises a plurality of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane devices and some water-in and water-out house stewards, each single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device is by each water-in and water-out house steward assembling in parallel that is arranged in parallel, wherein, each Dynamic Membrane device comprises again:
One tubulose inner pressed supporter, this tubulose inner pressed supporter comprise a porous thin-walled tube that forms Dynamic Membrane and feedwater or sewage are handled in order to wall within it at least, and porous thin-walled tube is the large aperture net;
One housing is arranged on the tubulose inner pressed supporter outside, the outside water purifying chamber that forms of enclosure interior and tubulose inner pressed supporter; Housing is provided with raw water inlet, some water purification delivery ports and a cross-flow recirculation water delivery port, wherein,
Raw water inlet is arranged on the housing lower end and is communicated with tubulose inner pressed supporter;
Each water purification delivery port is arranged on the housing and is communicated with water purifying chamber;
Cross-flow recirculation water delivery port is arranged on housing upper end and is communicated with tubulose inner pressed supporter, raw water inlet, supporter inner chamber and cross-flow recirculation water delivery port formation one aquaporin that refluxed.
Invention is according to the described single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of preferred embodiment of the present invention, its tubulose inner pressed 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 single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system of preferred embodiment of the present invention, its hollow support skeleton further comprises some supporting ribs, and supporting rib is the taper surface structure.
According to the described single-pipe internal 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 housing, the backwash water inlet is communicated with water purifying chamber, in order to tubulose inner pressed supporter is carried out backwash.
The present invention also provides a kind of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device, comprise: a tubulose inner pressed supporter and is arranged on the housing in the tubulose inner pressed supporter outside, this tubulose inner pressed supporter comprises a porous thin-walled tube that forms Dynamic Membrane and feedwater or sewage are handled in order to wall within it at least, and porous thin-walled tube is the large aperture net; The outside water purifying chamber that forms of enclosure interior and tubulose inner pressed supporter, housing is provided with raw water inlet and some water purification delivery ports, raw water inlet is arranged on the housing lower end and is communicated with tubulose inner pressed supporter, each water purification delivery port is arranged on the housing and is communicated with water purifying chamber, also be provided with a cross-flow recirculation water delivery port on the housing, cross-flow recirculation water delivery port is arranged on housing upper end and is communicated with tubulose inner pressed supporter, raw water inlet, supporter inner chamber and cross-flow recirculation water delivery port formation one aquaporin that refluxed.
According to the described single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid of preferred embodiment of the present invention Dynamic Membrane device, its tubulose inner pressed supporter comprises a porous thin-walled tube at least, and porous thin-walled tube forms Dynamic Membrane in order to wall within it and feedwater or sewage are handled.
Invention is according to the described single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid of preferred embodiment of the present invention Dynamic Membrane device, and its hollow support skeleton further comprises some supporting ribs, and supporting rib is the taper surface structure.
According to the described single-pipe internal 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 housing, the backwash water inlet is communicated with water purifying chamber, in order to tubulose inner pressed 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, and water purification flows into tubulose inner pressed supporter outside perpendicular to tubulose inner pressed supporter, and two water outlet directions are vertical mutually, in service have a cross-flow always, can reduce the waterpower dead angle, simultaneously, the present invention adopts inner pressed to filter, it is big that dynamic membrane support body is crossed water pressure, current are smooth and easy, can reduce the waterpower dead angle of dynamic membrane support body to greatest extent, guaranteed the water outlet quality.In addition, 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 tubulose inner pressed 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 can comprise porous thin-walled tube and hollow support skeleton, also can only comprise porous thin-walled tube, 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, Dynamic Membrane device of the present invention 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 a kind of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the embodiment of the invention;
Fig. 4 is the structural representation of the tubulose inner pressed dynamic membrane support body of the embodiment of the invention;
Fig. 5 is the structural representation of the another kind of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the embodiment of the invention;
Fig. 6 is the application schematic diagram of a kind of single-pipe internal 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 a kind of single-pipe internal 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.
Embodiment one
See also Fig. 3, it is the structural representation of a kind of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the embodiment of the invention.
The single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 20 of present embodiment in order to feedwater or sewage are handled, comprising: tubulose inner pressed supporter 21 and housing 22.
See also Fig. 4, it is the structural representation of the tubulose inner pressed dynamic membrane support body of the embodiment of the invention for the present invention.This tubulose inner pressed dynamic membrane support body 21 comprises porous thin-walled tube 211 and hollow support skeleton 212, porous thin-walled tube 211 forms Dynamic Membrane in order to wall within it and feedwater or sewage is handled, hollow support skeleton 212 is socketed in porous thin-walled tube 211 outsides, 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, for the bulk strength of reinforcement tubular inner pressed supporter 21, in porous thin-walled tube 211 arranged outside hollow support skeleton 212 to support porous thin-walled tube 211.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 inside.Therefore, adopt more than that to come the bulk strength of reinforcement tubular inner pressed 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 tubulose inner pressed 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, only be provided with a water purification delivery port 223, and water purification delivery port 223 is arranged on top, housing 22 side.But, the present invention is not concrete quantity and the position that limits water purification delivery port 223 with this, the concrete quantity of water purification delivery port 223 can be selected according to the requirement of water yield in the practical application, and it can be arranged on the optional position on housing 22 sides and housing two ends raw water inlet 221 or cross-flow recirculation water delivery port 222 next doors about in the of 22.More than adopting a water purification delivery port 223 to be arranged on top, housing 22 side is an example, and is not used in qualification the present invention.
Embodiment two
In above embodiment one, water purification delivery port 223 is both as the precoating circulating reflux of moving delivery port and Dynamic Membrane, simultaneously also as the backwash water inlet, during backwash, water under high pressure or gas enter tubulose inner pressed supporter 21 by water purification delivery port 223, tubular support is communicated with water purifying chamber 23,, and carries out backwash in order to the precoating circulating reflux of Dynamic Membrane and to each tubulose inner pressed supporter 21 in order to the water after discharge filtering.But the present invention has more than qualification and by the water purification delivery port tubular support is carried out backwash, sees also Fig. 5, and it is the structural representation of the another kind of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the embodiment of the invention.For ease of explanation, Fig. 5 is the primary clustering symbol of continuing to use among Fig. 4.
The single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 30 of present embodiment in order to feedwater or sewage are handled, comprising: tubulose inner pressed supporter 21 and housing 22.
Tubulose inner pressed supporter 21 in the present embodiment is identical with the structure of the tubulose inner pressed supporter of embodiment one, does not repeat them here.
See also Fig. 6, it is a kind of single-pipe internal 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. 6 is the primary clustering symbol of continuing to use among Fig. 3.
The raw water inlet 221 of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device of the present invention is connected with former pond 602 by water pump 601, cross-flow recirculation water delivery port 222 is connected to former pond 602, and each water inlet, delivery port also can be connected with valve or valve sets.Storage be pending liquid in the former pond 602, as the former water of feedwater, sewage, wine brewing stoste etc., below is convenient narration, is that example describes to store sewage in the former pond 602.
Single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 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 put into directly that former pond 602 or handling procedure formerly add, 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 221, sewage and tiny particulate matter are entered the inner chamber of tubulose inner pressed supporter 21 by raw water inlet 221, part sewage flows to tubulose inner pressed supporter 21 outsides by tubulose inner pressed supporter 21 inwalls, at this moment, fine particulate material in the sewage can be dammed by tubulose inner pressed supporter 21 inwalls, be collected on tubulose inner pressed supporter 21 inwalls, progressively form Dynamic Membrane 603.During precoating, the sewage after tubulose inner pressed supporter 21 dams returns former pond 602 by water purification delivery port 223, and water purification delivery port 223 is as the precoating circulating reflux of Dynamic Membrane 603.Another part sewage directly flows out by cross-flow recirculation water delivery port 202, returns former pond 602.
After precoating a period of time, Dynamic Membrane 603 can cover on the inwall of tubulose inner pressed 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 water purifying chamber 23, discharge, collect by the water purification that water purification delivery port 223 is discharged and promptly finish sewage disposal by water purification delivery port 223; The sewage that filters through Dynamic Membrane 603 is not flowed out by cross-flow recirculation water delivery port 222, returns former pond 602, reenters filtration treatment next time.Because recirculation water flows out inner pressed dynamic membrane support body inner chamber along the water inlet direction, water purification flows out perpendicular to tubulose inner pressed supporter 21 inwalls, two water outlet directions are vertical mutually, form cross-flow, can reduce the waterpower dead angle of the dynamic membrane support body inside of realizing feedwater/sewage disposal 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 tubulose inner pressed supporter 21 of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 20 is carried out demoulding.At this moment, in water purifying chamber 23, inject water under high pressure or gas by water purification delivery port 223, make pressure in the water purifying chamber 23 greater than the pressure of tubulose inner pressed supporter 21 inner chambers, make water oppositely flow to tubulose inner pressed supporter 21 inner chambers by water purifying chamber 23, under the effect of current, the Dynamic Membrane 603 that covers on tubulose inner pressed supporter 21 inwalls is dashed, and then by recirculation water towards broken, and carried by recirculation water and to leave tubulose inner pressed supporter 21 inner chambers, get back in the former pond 602, and can not form deposition at tubulose inner pressed supporter 21 inwalls and inner chamber.
Begin precoating after backwash is finished once more, make tubulose inner pressed supporter 21 inwalls form Dynamic Membrane 603 once more, so the sewage in the former pond 602 is filtered in circulation, obtains water purification.In the present embodiment, adopted the single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 20 of embodiment one, therefore, water purification delivery port 223 is both as the precoating circulating reflux of moving delivery port and Dynamic Membrane 603, simultaneously also as the backwash water inlet, if adopt the single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 30 of embodiment two to carry out sewage disposal, then when backwash, close the water purification outlet pipeline by control valve, open counter-flushing pipeline, directly carry out backwash by backwash water inlet 224 and handle, water purification delivery port 223 needn't be re-used as the backwash water inlet.
The present invention also provides a kind of single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system, in order to feedwater or sewage are handled, comprise a plurality of single-pipe internal 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 single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device, wherein, single single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device and the foregoing description one in this single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system, the single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane apparatus structure of embodiment two is identical, does not repeat them here.This single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system also comprises some water-in and water-out house stewards, when adopting this dynamic membrane stack of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device assembling of embodiment one, those water-in and water-out house steward specifically comprises former water water inlet manifold, cross-flow recirculation water outfall sewer and some water purification outfall sewers.Former water water inlet manifold is connected with the raw water inlet of each single-pipe internal 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 single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device, and the water purification outfall sewer is connected communicating pipe with the water inlet delivery port or the water purifying chamber of each single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device.When adopting this dynamic membrane stack of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device assembling of embodiment two, 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 single-pipe internal 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 single-pipe internal 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 single-pipe internal 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 water purification outfall sewer accordingly; 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 a kind of single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system application schematic diagram of the embodiment of the invention.
The former water water inlet manifold 701 of single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system 70 of the present invention is connected with former pond 705 by water pump 704, cross-flow recirculation water outfall sewer 702 be connected to former pond 705 and, the water inlet of each single-pipe internal 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 single-pipe internal 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, return former pond 705 by water purification house steward 703, 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 feedwater or sewage return former pond 705 by cross-flow recirculation water outfall sewer 702.During backwash, use water under high pressure or gas to enter each Dynamic Membrane device by water purification house steward 703, each Dynamic Membrane device is washed, the concrete course of work of each single Dynamic Membrane device no longer repeats at this as previously mentioned.
In the present embodiment, it is the single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system 70 that adopts single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 20 assemblings of embodiment one, therefore, both as the precoating circulating reflux and the operation water purification outfall sewer of Dynamic Membrane, the while was also as the backwash water inlet manifold for water purification outfall sewer 703.If adopt the dynamic membrane stack of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device 30 assemblings of embodiment two, then need not to carry out backwash by water purification outfall sewer 703, go into the supply mains and a backwash directly is set, go into the supply mains by backwash each single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device is carried out backwash.In addition, in this example, on each single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device a water purification delivery port only is set, single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system 50 comprises a water purification outfall sewer 703.When each single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device is provided with a plurality of water purification delivery port, dynamically but a plurality of water purification outfall sewers 703 of membrane stack corresponding setting also can only be provided with a water purification outfall sewer 703, if a plurality of water purification outfall sewers 703 are set, then the water purification delivery port on each Dynamic Membrane device is connected with corresponding water purification outfall sewer 703; If a water purification outfall sewer 703 only is set, then all water purification delivery ports all are connected to water purification outfall sewer 703 on the Dynamic Membrane device.
Above-mentioned single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system 70 can carry out precoating and backwash to all single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane devices simultaneously, each Dynamic Membrane device synchronous operation has realized concentrated water inlet, water outlet.Dynamic membrane stack of the present invention can also be controlled 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 dynamic membrane stack is continuous, steady operation, can handle the feedwater/sewage of different flow.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 (8)
1. single-pipe internal compression type mechanical circulation forced cross flow solid-liquid separation dynamic membrane system, it is characterized in that, comprise a plurality of single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane devices and some water-in and water-out house stewards, described each single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device is by described each water-in and water-out house steward assembling in parallel that is arranged in parallel, wherein, each described Dynamic Membrane device comprises again:
One tubulose inner pressed supporter, described tubulose inner pressed supporter comprise a porous thin-walled tube that forms Dynamic Membrane and feedwater or sewage are handled in order to wall within it at least, and described porous thin-walled tube is the large aperture net;
One housing is arranged on the described tubulose inner pressed supporter outside, the outside water purifying chamber that forms of described enclosure interior and described tubulose inner pressed supporter; Described housing is provided with raw water inlet, some water purification delivery ports and a cross-flow recirculation water delivery port, wherein,
Described raw water inlet is arranged on described housing lower end and is communicated with described tubulose inner pressed supporter;
Described each water purification delivery port is arranged on the described housing and is communicated with described water purifying chamber;
Described cross-flow recirculation water delivery port is arranged on described housing upper end and is communicated with described tubulose inner pressed supporter, described raw water inlet, supporter inner chamber and described cross-flow recirculation water delivery port formation one aquaporin that refluxed.
2. single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane assembling system as claimed in claim 1, it is characterized in that, described tubulose inner pressed 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. single-pipe internal 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 further comprises some supporting ribs, and described supporting rib is the taper surface structure.
4. single-pipe internal 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 housing, described backwash water inlet is communicated with described water purifying chamber, in order to described tubulose inner pressed supporter is carried out backwash.
5. single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device, comprise: a tubulose inner pressed supporter and is arranged on the housing in the described tubulose inner pressed supporter outside, described tubulose inner pressed supporter comprises a porous thin-walled tube that forms Dynamic Membrane and feedwater or sewage are handled in order to wall within it at least, and described porous thin-walled tube is the large aperture net; The outside water purifying chamber that forms of described enclosure interior and described tubulose inner pressed supporter, described housing is provided with raw water inlet and some water purification delivery ports, described raw water inlet is arranged on described housing lower end and is communicated with described tubulose inner pressed supporter, described each water purification delivery port is arranged on the described housing and is communicated with described water purifying chamber, it is characterized in that, also be provided with a cross-flow recirculation water delivery port on the described housing, described cross-flow recirculation water delivery port is arranged on described housing upper end and is communicated with described raw water inlet with described tubulose inner pressed supporter, supporter inner chamber and described cross-flow recirculation water delivery port form the aquaporin that refluxed.
6. single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device as claimed in claim 5, it is characterized in that, described tubulose inner pressed 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.
7. single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device as claimed in claim 6 is characterized in that described hollow support skeleton further comprises some supporting ribs, and described supporting rib is the taper surface structure.
8. single-pipe internal compression type mechanical circulation forced cross flow Separation of Solid and Liquid Dynamic Membrane device as claimed in claim 5, it is characterized in that, also be provided with a backwash water inlet on the described housing, described backwash water inlet is communicated with described water purifying chamber, in order to described tubulose inner pressed supporter is carried out backwash.
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| CN105177477A (en) * | 2015-09-03 | 2015-12-23 | 王文姣 | Efficient sewage treatment equipment |
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| CN102000512A (en) * | 2010-12-14 | 2011-04-06 | 曹达文 | External pressing type loop-free solid-liquid separation dynamic membrane device |
| CN102000512B (en) * | 2010-12-14 | 2013-11-06 | 上海鑫霖环境科技有限公司 | External pressing type loop-free solid-liquid separation dynamic membrane device |
| CN105177477A (en) * | 2015-09-03 | 2015-12-23 | 王文姣 | Efficient sewage treatment equipment |
| CN105177477B (en) * | 2015-09-03 | 2017-12-08 | 盐城市兰丰环境工程科技有限公司 | Efficient sewage treatment installation |
| CN105129919A (en) * | 2015-09-16 | 2015-12-09 | 湖州恒鑫过滤科技有限公司 | Cross-flow membrane filtration equipment |
| CN105129919B (en) * | 2015-09-16 | 2018-01-12 | 湖州恒鑫过滤科技有限公司 | A kind of cross-flow type membrane filtration equipment |
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| CN101733000B (en) | 2012-11-28 |
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