CN101805058B - Single-pipe external-compression type mechanical-circulation forced-cross flow solid and liquid-separating dynamic membrane system and device - Google Patents
Single-pipe external-compression type mechanical-circulation forced-cross flow solid and liquid-separating dynamic membrane system and device Download PDFInfo
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- CN101805058B CN101805058B CN2010101238061A CN201010123806A CN101805058B CN 101805058 B CN101805058 B CN 101805058B CN 2010101238061 A CN2010101238061 A CN 2010101238061A CN 201010123806 A CN201010123806 A CN 201010123806A CN 101805058 B CN101805058 B CN 101805058B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to single-pipe external-compression type mechanical-circulation forced-cross flow solid and liquid-separating dynamic membrane system and device. The dynamic membrane device comprises a tubular external-compression type supporter with a large-hole diameter net, a shell arranged at the outer side of the tubular external-compression type supporter, a plurality of supports, a raw water inlet and a plurality of purified water outlet tubes, wherein the inner part of the shell and the outer part of the tubular external-compression type supporter form a water inlet chamber, and the supports are arranged between the tubular external-compression type supporter and the shell at intervals and are respectively sheathed with the tubular external-compression type supporter and the tubular external-compression type supporter; the raw water inlet is connected to the lower end of the shell and is communicated with the water inlet chamber; and the purified water outlet tubes penetrate through the shell and are communicated with the inner cavity of the tubular external-compression type supporter. The dynamic membrane device also comprises a cross-flow backflow water outlet which is connected to the upper end of the shell and is communicated with the water inlet chamber. The dynamic membrane device has the advantages of no waterpower blind angel, short precoating time, convenient back washing, continuous working, improved 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 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 single-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 single-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 single-pipe external-compression type mechanical-circulation forced-cross flow solid-liquid separation dynamic membrane system, comprise a plurality of single-pipe external-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 external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device is by the water-in and water-out house steward assembling in parallel that is arranged in parallel, wherein, each Dynamic Membrane device comprises again:
One tubular external-compression type supporter, this tubular external-compression type supporter comprise a porous thin-walled tube in order to form Dynamic Membrane at its outer wall and feedwater or sewage are handled at least, and this porous thin-walled tube is the large aperture net;
One is arranged on the housing in the tubular external-compression type supporter outside, the outside intake chamber that forms of enclosure interior and tubular external-compression type supporter;
Some supports, each spacer support frame are arranged between tubular external-compression type supporter and the housing, respectively with tubular external-compression type supporter and housing socket;
Raw water inlet is connected to the housing lower end and is communicated with intake chamber;
Some pure water inlet pipe fittings are arranged in housing and are communicated with tubular external-compression type supporter inner chamber; And,
Cross-flow recirculation water delivery port, cross-flow recirculation water delivery port are connected to housing upper end, are communicated with raw water inlet, intake chamber and cross-flow recirculation water delivery port formation one aquaporin that refluxed with intake chamber.
Invention is according to the described single-pipe external-compression type mechanical-circulation forced-cross flow solid-liquid separation dynamic membrane system of preferred embodiment of the present invention, its tubular 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, the hollow support skeleton comprises some supporting ribs, and supporting rib is the taper surface structure.
According to the described single-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 a seal, the sealing part is connected to tubular external-compression type supporter bottom, in order to form sealing in tubular external-compression type supporter bottom.
According to the described single-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 single-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 two increasers, and wherein, an increaser is connected with housing with raw water inlet respectively; Another increaser is connected with housing with cross-flow recirculation water delivery port respectively.
According to the described single-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 a backwash entry pipe fitting, backwash entry pipe fitting is arranged in housing, be communicated with tubular external-compression type supporter inner chamber, in order to the tubular external-compression type supporter is carried out backwash.
The present invention also provides a kind of single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device, comprise that a tubular external-compression type supporter, is arranged on the housing in the tubular external-compression type supporter outside, some supports, raw water inlet and some pure water inlet pipe fittings, this tubular 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 this porous thin-walled tube is the large aperture net; The outside intake chamber that forms of enclosure interior and tubular external-compression type supporter, each spacer support frame is arranged between tubular external-compression type supporter and the housing, respectively with tubular external-compression type supporter and housing socket; Raw water inlet is connected to the housing lower end and is communicated with intake chamber; The pure water inlet pipe fitting is arranged in housing and is communicated with tubular external-compression type supporter inner chamber, also comprise: a cross-flow recirculation water delivery port, cross-flow recirculation water delivery port is connected to housing upper end, is communicated with raw water inlet, intake chamber and cross-flow recirculation water delivery port formation one aquaporin that refluxed with intake chamber.
Invention is according to the described single-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 tubular 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, the hollow support skeleton comprises some supporting ribs, and supporting rib is the taper surface structure.
According to the described single-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 a seal, and seal is connected to tubular external-compression type supporter bottom, in order to form sealing in tubular external-compression type supporter bottom.
According to the described single-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 single-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 two increasers, and wherein, an increaser is connected with housing with raw water inlet respectively; Another increaser is connected with housing with cross-flow recirculation water delivery port respectively.
According to the described single-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 a backwash entry pipe fitting, backwash entry pipe fitting is arranged in housing, be communicated with tubular external-compression type supporter inner 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, invent 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 single-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 structural representation of the tubular external-compression type supporter of the embodiment of the invention;
Fig. 5 is the structural representation of the support of the embodiment of the invention;
Fig. 6 is the application schematic diagram of the single-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 single-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, it is for the structural representation of single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device of the present invention.This single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device 20 comprises: tubular external-compression type supporter 21, housing 22, three supports 23, raw water inlet 24, cross-flow recirculation water delivery port 25, pure water inlet pipe fitting 26, two increasers 27 and deflection cones 28, housing 22 is arranged on tubular external-compression type supporter 21 outsides, the housing 22 inner and tubular external-compression type supporter 21 outside intake chambers 29 that form.Three supports 23 are disposed between tubular external-compression type supporter 21 and the housing 22, respectively with tubular external-compression type supporter 21 and housing 22 sockets, in order to fixing tubular external-compression type supporter 21.Raw water inlet 24 is connected to housing 22 lower ends by an increaser 27, is communicated with intake chamber 29, sends into intake chamber 29 in order to the feedwater or the sewage that will need to handle.Cross-flow recirculation water delivery port 25 is connected to housing 22 upper ends by another increaser 27, is communicated with intake chamber 29, and in order to discharging unfiltered water, raw water inlet 24, intake chamber 29 and cross-flow recirculation water delivery port 25 form the aquaporin that refluxed.Pure water inlet pipe fitting 26 is arranged in housing 22, is communicated with tubular external-compression type supporter 21 inner chambers, in order to the water after discharge filtering, and carries out backwash in order to the precoating circulating reflux of Dynamic Membrane and to tubular external-compression type supporter 21.Deflection cone 28 is connected to tubular external-compression type supporter 21 bottoms, and an end is fixedlyed connected with tubular external-compression type supporter 21, and the other end and support 23 sockets seal in order to form in tubular external-compression type supporter 21 bottoms, and can reduce the waterpower dead angle to greatest extent.
See also Fig. 4, 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.
See also Fig. 5, it is the structural representation of the support of the embodiment of the invention.The end face 231 that respectively contacts of support 23 all is circular-arc, makes tubular external-compression type supporter 21 even with the upper and lower space of housing 22, the interlayer fluid stable.In this example, be provided with three supports 23, and support 23 at interval be arranged on two ends up and down and centre position between tubular external-compression type supporter 21 and the housing 22, but, need to prove, the present invention does not limit the concrete quantity and the position of support 23, the quantity of support 23 can be set as required, can also can be less than three more than three, and, support 23 can be arranged on the optional position between tubular external-compression type supporter 21 and the housing 22, more than adopt three supports 23 are set, and three support 23 two ends up and down and centre positions of being arranged between tubular external-compression type supporter 21 and the housing 22 at interval are an example, and are not used in qualification the present invention.
In this example, pure water inlet pipe fitting 26 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 tubular external-compression type supporter 21 by pure water inlet pipe fitting 26, 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, a backwash entry pipe fitting can also be set simultaneously, make a backwash entry pipe fitting be arranged in housing 22 and be communicated with, directly tubular external-compression type supporter 21 is carried out backwash by backwash entry pipe fitting with tubular external-compression type supporter 21.Therefore, more than be an example as the backwash water inlet simultaneously with pure water inlet pipe fitting 26, and be not used in qualification the present invention.In addition, in this example, only be provided with a pure water inlet pipe fitting 26, and pure water inlet pipe fitting 26 is arranged on tubular external-compression type supporter 21 and housing 22 tops.But, the present invention is not concrete quantity and the position that limits pure water inlet pipe fitting 26 with this, the concrete quantity of pure water inlet pipe fitting 26 can be selected according to the requirement of water yield in the practical application, and it can be arranged on the optional position of tubular external-compression type supporter 21 and housing 22.More than adopt a pure water inlet pipe fitting 26 to be arranged on tubular external-compression type supporter 21 and housing 22 tops are an example, and be not used in qualification the present invention.
When the two ends up and down of single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device 20 of the present invention all are provided with pure water inlet pipe fitting 26, Dynamic Membrane device of the present invention does not need tubular external-compression type supporter 21 is sealed, but, the port of tubular external-compression type supporter 21 is not sealed if pure water inlet pipe fitting 26 is arranged on the two ends up and down of Dynamic Membrane device then needs.In the above-described embodiment, owing to only be provided with a pure water inlet pipe fitting 26 in the upper end, therefore, the present invention is provided with seal and forms sealing in tubular external-compression type supporter 21 bottoms, and,, adopted deflection cone 28 as seal in order to reduce the waterpower dead angle to greatest extent.But the present invention does not limit the concrete form of seal, and it can adopt deflection cone 28, can also adopt other shapes to carry out water conservancy diversion, even water conservancy diversion can be set, more than adopting deflection cone 28 is an example as seal, and is not used in qualification the present invention.In addition; in the above-described embodiment; for current are evenly flowed; raw water inlet 24 all is connected with housing 22 by increaser 27 with cross-flow recirculation water delivery port 25; but; in actual applications; can select the connected mode of raw water inlet 24 and cross-flow recirculation water delivery port 25 and housing 22 arbitrarily; for example; raw water inlet 24 and cross-flow recirculation water delivery port 25 also can be set directly on the housing 22, and any can realization all should be dropped on raw water inlet 24 and cross-flow recirculation water delivery port 25 in protection scope of the present invention with housing 22 ways of connecting in the prior art.And above-mentioned raw water inlet 24 and cross-flow recirculation water delivery port 25 and 27 movable connections of increaser also can one-body moldedly be made, and the present invention is not limited.
When single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device 20 of the present invention uses, by the trapezoid cross section silica gel sealing ring raw water inlet 24, cross-flow recirculation water delivery port 25 and pure water inlet pipe fitting 26 are connected with exterior line and get final product easy accessibility.
Please participate in Fig. 6, it is a kind of single-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. 6 is the primary clustering symbol of continuing to use among Fig. 3.
Single-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 24 of single-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 25 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.
Single-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 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 enter intake chamber 29 by raw water inlet 24, 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 pure water inlet pipe fitting 26, and pure water inlet pipe fitting 26 is as the precoating circulating reflux of Dynamic Membrane 603.Another part sewage directly flows out by cross-flow recirculation water delivery port 25, 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, discharge by pure water inlet pipe fitting 26, collect by the water purification that pure water inlet pipe fitting 26 is discharged and promptly finish sewage disposal; The sewage that filters through Dynamic Membrane 603 is not flowed out by cross-flow recirculation water delivery port 25, returns former pond 602, reenters filtration treatment next time.Because recirculation water flows out along the water inlet direction, water purification perpendicular to tubular external-compression type supporter 21 outer surfaces flow out into, 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 single-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 pure water inlet pipe fitting 26 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 29, make water oppositely flow to intake chamber 29 by tubular external-compression type supporter 21 inside, under the effect of current, the Dynamic Membrane 603 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 not form deposition on tubular external-compression type supporter 21 outer surfaces and in the intake chamber.
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 pure water inlet pipe fitting 26.
The present invention also provides a kind of single-pipe external-compression type mechanical-circulation forced-cross flow solid-liquid separation dynamic membrane system, comprise a plurality of single-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 single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device, wherein, this single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device is identical with the single-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 single-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 single-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 single-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 pure water inlet pipe fitting of corresponding each single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device.When the single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device that is provided with backwash entry pipe fitting 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 entry pipe fitting of each single-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 pure water inlet pipe fitting of each single-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 pure water inlet pipe fitting of each single-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 pure water inlet pipe fitting 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 pure water inlet pipe fittings 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 single-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 single-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 single-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 single-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.Another part feedwater or sewage directly return 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 single-pipe external-compression type mechanical-circulation forced-cross flow solid-liquid separation dynamic membrane system can carry out precoating and backwash to all single-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.In addition, in actual applications, also single-pipe external-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. single-pipe external-compression type mechanical-circulation forced-cross flow solid-liquid separation dynamic membrane system, it is characterized in that, comprise a plurality of single-pipe external-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 external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device is by the described water-in and water-out house steward assembling in parallel that is arranged in parallel, wherein, each described Dynamic Membrane device comprises again:
One tubular external-compression type supporter, described tubular external-compression type supporter comprise 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;
One is arranged on the housing in the described tubular external-compression type supporter outside, the outside intake chamber that forms of described enclosure interior and described tubular external-compression type supporter;
Some supports, described each spacer support frame are arranged between described tubular external-compression type supporter and the housing, respectively with described tubular external-compression type supporter and housing socket;
Raw water inlet is connected to described housing lower end and is communicated with described intake chamber;
Some pure water inlet pipe fittings are arranged in described housing and are communicated with described tubular external-compression type supporter inner chamber; And,
Cross-flow recirculation water delivery port, described cross-flow recirculation water delivery port are connected to described housing upper end, are communicated with described raw water inlet, intake chamber and described cross-flow recirculation water delivery port formation one aquaporin that refluxed with described intake chamber.
2. single-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 tubular 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, described hollow support skeleton comprises some supporting ribs, and described supporting rib is the taper surface structure.
3. single-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 a seal, described seal is connected to described tubular external-compression type supporter bottom, in order to form sealing in described tubular external-compression type supporter bottom.
4. single-pipe external-compression type mechanical-circulation forced-cross flow solid-liquid separation dynamic membrane system as claimed in claim 3 is characterized in that, described seal is a deflection cone.
5. single-pipe external-compression type mechanical-circulation forced-cross flow solid-liquid separation dynamic membrane system as claimed in claim 1 is characterized in that, described Dynamic Membrane device also comprises two increasers, and wherein, a described increaser is connected with housing with described raw water inlet respectively; Another described increaser is connected with housing with described cross-flow recirculation water delivery port respectively.
6. single-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 a backwash entry pipe fitting, described backwash entry pipe fitting is arranged in described housing, be communicated with described tubular external-compression type supporter inner chamber, in order to described tubular external-compression type supporter is carried out backwash.
7. single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device, comprise that a tubular external-compression type supporter, is arranged on the housing in the described tubular external-compression type supporter outside, some supports, raw water inlet and some pure water inlet pipe fittings, described tubular 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; The outside intake chamber that forms of described enclosure interior and described tubular external-compression type supporter, described each spacer support frame is arranged between described tubular external-compression type supporter and the housing, respectively with described tubular external-compression type supporter and housing socket; Described raw water inlet is connected to described housing lower end and is communicated with described intake chamber; Described pure water inlet pipe fitting is arranged in described housing and is communicated with described tubular external-compression type supporter inner chamber, it is characterized in that, also comprise: a cross-flow recirculation water delivery port, described cross-flow recirculation water delivery port is connected to described housing upper end, be communicated with described intake chamber, described raw water inlet, intake chamber and described cross-flow recirculation water delivery port form the aquaporin that refluxed.
8. single-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 tubular 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, described hollow support skeleton comprises some supporting ribs, and described supporting rib is the taper surface structure.
9. single-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 a seal, and described seal is connected to described tubular external-compression type supporter bottom, in order to form sealing in described tubular external-compression type supporter bottom.
10. single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device as claimed in claim 9 is characterized in that described seal is a deflection cone.
11. single-pipe external-compression type mechanical-circulation forced-cross flow Separation of Solid and Liquid Dynamic Membrane device as claimed in claim 7 is characterized in that described Dynamic Membrane device also comprises two increasers, wherein, a described increaser is connected with housing with described raw water inlet respectively; Another described increaser is connected with housing with described cross-flow recirculation water delivery port respectively.
12. single-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 Dynamic Membrane device also comprises a backwash entry pipe fitting, described backwash entry pipe fitting is arranged in described housing, be communicated with described tubular external-compression type supporter inner chamber, in order to described tubular external-compression type supporter is carried out backwash.
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| CN2010101238061A CN101805058B (en) | 2010-02-11 | 2010-02-11 | Single-pipe external-compression type mechanical-circulation forced-cross flow solid and liquid-separating dynamic membrane system and device |
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| 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 |
| CN108970409A (en) * | 2018-07-26 | 2018-12-11 | 河南省亚龙超硬材料有限公司 | It is a kind of for being classified the device of diadust |
| CN114853159B (en) * | 2022-04-25 | 2023-05-09 | 北京华宇辉煌生态环保科技股份有限公司 | High-efficient solid-liquid separation device of pocket type autogenous dynamic membrane |
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| CN100368316C (en) * | 2006-02-17 | 2008-02-13 | 南京工业大学 | High-flux flexible bionic dynamic membrane assembly and manufacturing method and application thereof |
| CN201613113U (en) * | 2010-02-11 | 2010-10-27 | 曹达文 | Dynamic membrane system for single-pipe external compression type mechanical circulation forced cross-flow solid-liquid separation and device thereof |
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