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WO2013040727A1 - Système de filtration sur membrane hybride par infiltration sous pression à plat - Google Patents

Système de filtration sur membrane hybride par infiltration sous pression à plat Download PDF

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Publication number
WO2013040727A1
WO2013040727A1 PCT/CN2011/001652 CN2011001652W WO2013040727A1 WO 2013040727 A1 WO2013040727 A1 WO 2013040727A1 CN 2011001652 W CN2011001652 W CN 2011001652W WO 2013040727 A1 WO2013040727 A1 WO 2013040727A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
pressure vessel
membrane element
filtration system
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2011/001652
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English (en)
Chinese (zh)
Inventor
张慧春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2013040727A1 publication Critical patent/WO2013040727A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
    • B01D63/043—Hollow fibre modules comprising multiple hollow fibre assemblies with separate tube sheets
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/20—Specific housing
    • B01D2313/201—Closed housing, vessels or containers
    • B01D2313/2011—Pressure vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/23—Specific membrane protectors, e.g. sleeves or screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2319/00—Membrane assemblies within one housing
    • B01D2319/02—Elements in series
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/14—Maintenance of water treatment installations

Definitions

  • the present invention relates to a membrane filtration system, and more particularly to a horizontal pressure immersion composite membrane filtration system.
  • the existing horizontal membrane filtration system generally consists of a pressure vessel 1, a hollow fiber membrane element with a casing, an interposing joint 3, and an end cap 4.
  • a row of four membrane elements with a casing are mounted in series in each pressure vessel, and the membrane elements are connected by an interposing joint, and both ends of the pressure vessel are sealed by an end cap.
  • the existing horizontal membrane system is generally only equipped with an inner pressure membrane element, and the cross section and section of the single book membrane element are as shown in FIG. 2 and FIG. 3, and the water production collection tube, the bypass water distribution pipe, the water production main pipe are arranged in the membrane element 2, The membrane filament and the membrane shell disposed outside the membrane filament, the membrane shell being impervious to water.
  • the existing membrane filtration system diagram is shown in Figure 1.
  • the water inlet is generally located at both ends of the pressure vessel, and a part of the liquid to be filtered enters the membrane elements at both ends for filtration, and the rest passes through the bypass water distribution channel of the membrane element itself to enter the next two membrane elements to ensure each membrane element in the pressure vessel.
  • the water distribution is uniform; the filtered product water is discharged through the water collecting pipe at the center of the membrane element to the water outlet.
  • the disadvantage of such a membrane filtration system is that only one membrane element can be provided, and only the inner pressure membrane can be used, the filtration efficiency is relatively low, and the applicability is limited.
  • the existing membrane element includes a water collection tube,
  • the bypass water distribution pipe, the water production main pipe, the membrane wire and the membrane shell which is disposed outside the membrane wire are relatively complicated in structure and relatively high in cost.
  • the present invention has been made to solve the deficiencies in the prior art, and an object of the present invention is to provide a simple structure, low cost, multiple membrane elements can be disposed, and multiple membrane elements can be used for simultaneous filtration, thereby effectively improving the filtration system. Filtration efficiency, easy replacement of parts and maintenance, horizontal immersion composite membrane filtration system with multiple operation modes and greatly improved applicability.
  • a horizontal pressure-impregnated composite membrane filtration system of the present invention comprises an end-closed pressure vessel and a seal Having at least one row of membrane element assemblies disposed in the pressure vessel, each membrane element assembly is provided with at least two membrane elements arranged in series, and a gap is left between the membrane element assembly and the pressure vessel, Both ends of the membrane element assembly are inserted on the end plate, and the adjacent two membrane elements of each row are sealedly connected by a connecting member, and the two end plates separate the space inside the pressure vessel into two ends.
  • the membrane element comprising an inner membrane filament and an outer mesh encased outside the membrane filament, water seeping or infiltrating from the outer web
  • the membrane element is provided with a water conduit extending through the front end and the rear end of the membrane element
  • the pressure vessel is provided with an end inlet and outlet on the outside of the two end chambers, and the pressure vessel is located outside the intermediate chamber Set at least one middle inlet and outlet water ⁇ .
  • a horizontal pressure immersion composite membrane filtration system of the present invention may also be:
  • Two central inlet and outlet ports are disposed on the pressure vessel outside the intermediate chamber, and the two central inlet and outlet ports are located at both end positions of the intermediate chamber.
  • the two end water outlets and the middle inlet and outlet are respectively located on opposite sides of the pressure vessel, and the two central outlets are respectively located on the same side or opposite sides of the pressure vessel.
  • the membrane element further includes a closure at both ends of the membrane filament and a tip located outside the closure, the closure being disposed at the end of the membrane filament, the tip being the head, the membrane The wire and the outer mesh are fixed together.
  • Both ends of the pressure vessel are provided with end caps that seal the pressure vessel.
  • a fixing hole corresponding to the size of the membrane element is disposed on the end plate, and an end edge of the membrane element is sealingly fixed in the fixing hole, and the number and position of the fixing hole on the end plate and the membrane element The number and location correspond.
  • the membrane elements are arranged in series with four membrane elements.
  • a seven-row membrane element assembly is disposed within the pressure vessel.
  • a horizontal immersion composite membrane filtration system of the present invention which comprises at least one membrane element assembly disposed at the end and a membrane element assembly disposed in the pressure vessel, at least two membrane element assemblies per membrane Membrane elements arranged in series, leaving a space between the membrane element assembly and the pressure vessel a gap, the two ends of each of the membrane element assemblies are interposed on the end plate, and each of the adjacent two membrane elements is sealedly connected by a connecting member, and the two end plates will press the inner space of the pressure vessel
  • the horizontally-impregnated composite membrane filtration system of such a structure has the advantage over the prior art that the outer membrane of the membrane element is provided with a water-permeable outer mesh, and the water can enter the interior from the outside of the membrane element.
  • the water can be filtered from the internal water pipe and discharged outside the membrane element, that is, the inner pressure film or the outer pressure film can be used, which expands the applicability of the membrane filtration system.
  • each membrane element assembly is formed by connecting at least two membrane elements in series. Therefore, a plurality of membrane elements can be disposed in the pressure vessel, and the plurality of membrane elements simultaneously act on water.
  • each membrane component assembly is sealed and inserted on the end plate. It is not necessary to replace all membrane component components during maintenance, and only need to replace the damaged membrane.
  • the component group can be used for easy maintenance and prolong the service life of the overall membrane filtration system.
  • Figure 1 is a schematic view of a prior art membrane filtration system.
  • Figure 2 is a radial cross-sectional view of the membrane element of Figure 1.
  • Figure 3 is an axial cross-sectional view of the membrane element of Figure 1.
  • FIG. 4 is a schematic view of a specific embodiment of a horizontal pressure immersion composite membrane filtration system of the present invention.
  • Fig. 5 is a schematic view showing another embodiment of the horizontal pressure immersion composite membrane filtration system of the present invention.
  • FIG. 6 is a schematic view showing still another embodiment of the horizontal pressure immersion composite membrane filtration system of the present invention.
  • FIG. 7 is a schematic view showing still another embodiment of a horizontal pressure immersion composite membrane filtration system of the present invention.
  • Figure 8 is a schematic view showing a modified embodiment of the horizontal pressure immersion composite membrane filtration system of the present invention.
  • Figure 9 is a radial cross-sectional view of a membrane element of a horizontal pressure immersion composite membrane filtration system of the present invention.
  • Figure 10 is an axial cross-sectional view of a membrane element of a horizontal infusion composite membrane filtration system of the present invention.
  • Figure 11 is a plan view of the end plate of the horizontal pressure immersion composite membrane filtration system of the present invention.
  • Figure 12 is a cross-sectional view showing an end plate of a horizontal pressure immersion composite membrane filtration system of the present invention.
  • a horizontal pressure immersion composite membrane filtration system of the present invention includes an end-closed pressure vessel 1 and at least one row of membrane element assemblies enclosed in the pressure vessel 1, each The membrane element assembly is provided with at least two membrane elements 2 arranged in series, a gap 18 is left between the membrane element assembly and the pressure vessel 1, and both ends of each membrane element assembly are inserted in the end plate 6 , the adjacent two membrane elements 2 of each row are sealedly connected by a connecting member 7 , the two end plates 6 separate the inner space of the pressure vessel 1 into two end chambers 8 and located at the two An intermediate chamber 9 between the end chambers 8, the membrane element 2 comprising an inner membrane wire 10 and an outer mesh 11 disposed outside the membrane filament 10, water oozing or infiltrating from the outer mesh 11
  • the membrane element 2 is provided with a water conduit 12 extending through the front end and the rear end of the membrane element 2, and the pressure vessel 1 is provided with an end inlet and outlet port 13 on the outside of the two end chambers 8, the pressure vessel 1 At least one central
  • A. External pressure cross-flow filtration As shown in Fig. 4, the inlet and outlet ports 13 at both ends are for producing water, and the middle inlet and outlet 14 is for sewage.
  • the sewage enters the middle from the central inlet. Inside the cavity, and filled with the central cavity, and then the sewage infiltrates into the membrane element 2 from the external network 11 due to the external pressure.
  • the membrane 10 is filtered, and the filtered filtered water permeates into the water pipe 12, and the water in the water pipe 12 flows out to the two end chambers 8 of the pressure vessel 1 by the subsequent infiltration of the filtered water, and then
  • the end inlet and outlet port 13 discharges the filtered water.
  • the positive washing is generally performed first, that is, the clean water enters the intermediate chamber 9 from the middle inlet and outlet port 14, and then the outer web 11 and the outer periphery of the membrane element 2 are washed, and then the water containing the high concentration of dirt is from the intermediate chamber 9
  • An intermediate inlet and outlet (when the intermediate inlet and outlet are concentrated water discharge ports) are discharged, and then backwashing is performed, that is, fresh water enters the end chamber 8 of the pressure vessel 1 from the end inlet and outlet port 13 and then enters the water delivery pipe 12, And from the penetration into the membrane wire 10, and finally under the action of pressure, the surface of the rinsing membrane wire 10 and the dirt in the intermediate chamber 9 are exuded from the outside of the membrane filament 10 and discharged from the intermediate chamber 9 through the central inlet and outlet port 14 to reach The purpose of cleaning the membrane element 2 and the filtration system.
  • clean water enters the intermediate chamber 9 from the middle inlet and outlet, and then reverses into the membrane element 2 under the action of pressure, that is, enters the membrane 10 in the opposite direction, cleans the contaminants on the surface of the membrane 10, and then
  • the rinsing water and contaminants are discharged from the ends of the water pipe 12 and the membrane element 2 into the end chamber 8, and then discharged into the pressure vessel 1 under pressure, thereby rinsing the membrane element 2 and the pressure vessel 1, In order to carry out the subsequent filtration process.
  • Filtration is carried out, and the rest is filtered through the water supply pipe 12 and the connecting member 7 on the edge of the membrane element 2 into the next membrane element 2, and the sewage is filtered from the outer membrane 11 through the membrane 10 of the membrane element 2
  • the oozing out into the intermediate chamber 9 and then the filtered water is produced from the central inlet and outlet 14 due to the pressure.
  • the positive washing is generally performed first, that is, the clean water enters the end chamber 8 of the pressure vessel 1 from the end inlet and outlet port 13, and then the end of the membrane element 2 and the water channel are rinsed, and then contains a high concentration of dirt.
  • the water is discharged from the other end of the end chamber 8 into and out of the water outlet 13 (when the end inlet and outlet port 13 is a concentrated water discharge port), and then backwashed, that is, the clean water enters the pressure vessel 1 from the central inlet and outlet port 14
  • the surface of the membrane element 2 is then rinsed and permeated into the membrane wire 10, and finally oozes or penetrates into the water conduit 12 from the end of the membrane filament 10 under the action of pressure to rinse the surface of the membrane wire 10 and the water conduit 12.
  • the dirt inside is discharged from the end portions of the water pipe 12 and the membrane member 2 into the end chamber 8, and is discharged under pressure by the end inlet and outlet port 13 for the purpose of further cleaning the membrane element 2 and the filtration system.
  • the horizontally-impregnated composite membrane filtration system of such a structure has an advantage over the prior art that the membrane 10 of the membrane element 2 is externally coated with a water-permeable outer membrane 11, and water can be used not only from the membrane element
  • the outside of the 2 enters the inside of the water pipe 12, and the water can be filtered from the internal water pipe 12 and discharged outside the membrane element 2, that is, the inner pressure film or the outer pressure film can be used, and the applicability of the membrane filtration system can be expanded.
  • each row of membrane element assemblies is formed by connecting at least two membrane elements 2 in series.
  • a plurality of membrane elements 2 can be disposed in the pressure vessel 1, and the plurality of membrane elements 2 can simultaneously The function of filtering the water greatly improves the filtration efficiency of the membrane filtration system. Moreover, each membrane component assembly is sealed and inserted on the end plate 6, and it is not necessary to replace all the membrane component components during the maintenance process, and only need to be replaced and damaged.
  • the row of membrane elements can be assembled in groups of 2, which is easy to maintain and prolongs the service life of the integral membrane filtration system.
  • the pressure vessel 1 is disposed on the outside of the intermediate chamber 9 and has two central accesses.
  • the nozzle 14, the two central inlet and outlet ports 14 are located at both end positions of the intermediate chamber 9. of course It is also possible to provide more central inlet and outlet ports 14. It is preferable to provide two central inlet and outlet ports 14 because it is possible to perform a positive washing in the washing stage first, and a clean water inlet, a concentrated water discharge port which is discharged as a high-concentration contaminant water.
  • the advantage that the two central inlet and outlet ports 14 are respectively located at the ends of the intermediate chamber 9 is that the amount of water inflow is large, and at the same time, the membrane elements 2 at both ends are taken into consideration, and the front end membrane element 2 does not have much contaminant, and the last end membrane element 2 hardly acts. The situation occurs, that is, it functions to equalize the utilization of the membrane element 2.
  • a further preferred embodiment is that the two end water outlets and the central inlet and outlet port 14 are respectively located on opposite sides of the pressure vessel 1.
  • the sewage inlet port and the filtered water outlet are respectively located on the opposite side, which helps to speed up the filtration, and at the same time facilitates the equalization of the membrane filaments 10 on the membrane element 2, avoiding the appearance of the membrane of the membrane element 2, for example, on the upper side.
  • the use of the filament 10 is relatively sufficient, and the utilization of the membrane filament 10 of the lower membrane element 2 is relatively low, so that the filtration efficiency is higher.
  • the two central outlets are located on the same or opposite sides of the pressure vessel 1, respectively.
  • the advantage of the central outlet on the same side is that the inlet and outlet water are relatively uniform, while the central outlet is located on the opposite side, which has the advantage of being more thoroughly cleaned during the wash.
  • the membrane element 2 further includes a membrane wire.
  • a closure 15 at both ends and a tip 16 at the outside of the closure 15, the closure 15 being provided at the end of the membrane wire 10, the end 16 having the closure 15, the membrane filament 10 and the outer net 11 are fixed together.
  • the head 15 fixes each of the membrane wires 10, and the tip end of each of the membrane wires 10 is in contact with the outside, and the function of the tip 16 is to fix the head 15 and the outer net 11 together to form a water permeable.
  • Membrane element 2 the function of the tip 16 is to fix the head 15 and the outer net 11 together to form a water permeable.
  • both ends of the pressure vessel 1 are provided with an end cap 4 that seals the pressure vessel 1.
  • the function of the end cap 4 is to close the pressure vessel 1, thereby ensuring that the water of the pressure vessel 1 does not flow out of the gap of the end chamber 8, affecting the pressure difference in the pressure vessel 1 and the efficiency of water ingress and water production.
  • a fixing hole 17 is formed on the end plate 6 in a size corresponding to the size of the membrane element 2.
  • the end edge of the membrane element 2 is sealingly fixed in the fixing hole 17, and the end plate 6 is fixed in the hole 17 Quantity and The position corresponds to the number and position of the membrane elements 2.
  • the function of the end plate 6 is to fix the components of each group of membrane elements, and the second is that the end plate 6 isolates the intermediate chamber 9 and the end chamber 8 after sealing and inserting the membrane element assembly, so as to avoid mixing of sewage and filtered water to affect filtration. effectiveness. As shown in Figs.
  • the end plate 6 is shown in the case where seven sets of membrane element assemblies are fixed, since the membrane element 2 is inserted into the fixing hole 17, the end of the membrane 10 of each membrane element 2 Both the portion and the water delivery pipe 12 are exposed, so that water can enter the membrane element 2 from the end of the membrane wire 10.
  • the horizontal immersion composite membrane filtration system of the present invention please refer to FIG. 4 to FIG. 12 , and based on the specific embodiment 1 or the specific embodiment 2 or the third embodiment,
  • the element components are arranged in series with four membrane elements 2.
  • a seven-row membrane element assembly is disposed in the pressure vessel 1. As shown in Figure 8, the filtration efficiency is relatively high, while filtering a larger amount of water.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention porte sur un système de filtration sur membrane hybride par infiltration sous pression à plat, qui comprend un récipient à pression hermétiquement fermé (1) et au moins une rangée constituée d'un ensemble de modules membranaires disposée dans celui-ci. Chaque rangée constituée d'un ensemble de modules membranaires est pourvue d'au moins deux modules membranaires (2) raccordés en série. L'ensemble de modules membranaires et le récipient à pression (1) sont pourvus d'un espace (18) entre eux. Deux extrémités de l'ensemble de modules membranaires sont toutes deux engagées dans des panneaux d'extrémité (6). Deux modules membranaires adjacents (2) sont raccordés par une pièce de raccordement (7). Les deux panneaux d'extrémité (6) divisent l'espace à l'intérieur du récipient à pression (1) en cavités d'extrémité (8) et une cavité centrale (9). Les modules membranaires (2) comprennent des fibres membranaires internes (10) et un filet externe (11) disposé de façon couvrante sur les extérieurs des fibres membranaires (10). L'eau permée vers l'extérieur ou vers l'intérieur en passant par le filet externe (11). Les modules membranaires (2) sont pourvus de tuyaux de transfusion d'eau (12) pénétrant dans les extrémités avant et les extrémités arrière des modules membranaires (2). Le récipient à pression (1) est pourvu sur celui-ci d'une entrée/sortie d'eau de sections d'extrémité (13) et d'entrées/sorties d'eau (14) de section intermédiaire. Le système a une structure simple, facilite le remplacement de pièces et l'entretien, permet d'utiliser simultanément de multiples modules membranaires pour la filtration, permet une efficacité de filtration accrue et permet divers modes de fonctionnement et une grande applicabilité.
PCT/CN2011/001652 2011-09-22 2011-09-29 Système de filtration sur membrane hybride par infiltration sous pression à plat Ceased WO2013040727A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110284555.XA CN102380316B (zh) 2011-09-22 2011-09-22 一种卧式压浸复合式膜滤系统
CN201110284555.X 2011-09-22

Publications (1)

Publication Number Publication Date
WO2013040727A1 true WO2013040727A1 (fr) 2013-03-28

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WO (1) WO2013040727A1 (fr)

Cited By (1)

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US20220250393A1 (en) * 2019-06-28 2022-08-11 Dic Corporation Hollow fiber degassing module, inkjet printer, and method for degassing liquid

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Publication number Priority date Publication date Assignee Title
CN110028184B (zh) * 2019-04-25 2021-07-06 广州绿邦环境技术有限公司 一种用纳米微波离子感应技术处理污水的方法及设备
CN117160238B (zh) * 2023-11-02 2024-01-26 山东招金膜天股份有限公司 拼装式中空纤维膜组件

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JP2008183517A (ja) * 2007-01-30 2008-08-14 Mitsubishi Rayon Eng Co Ltd 廃水処理装置
CN201520677U (zh) * 2009-07-15 2010-07-07 罗兴富 一种分级分质供水及自动蓄水制水机
CN201880490U (zh) * 2010-12-02 2011-06-29 金科水务工程(北京)有限公司 一种多膜元件过滤装置

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JP4069183B2 (ja) * 2003-03-13 2008-04-02 日東電工株式会社 スパイラル型膜モジュール
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WO2003014025A1 (fr) * 2001-08-10 2003-02-20 Innova Pure Water Inc. Filtres a membrane en fibres creuses utilise dans differents contenants
JP2008183517A (ja) * 2007-01-30 2008-08-14 Mitsubishi Rayon Eng Co Ltd 廃水処理装置
CN201520677U (zh) * 2009-07-15 2010-07-07 罗兴富 一种分级分质供水及自动蓄水制水机
CN201880490U (zh) * 2010-12-02 2011-06-29 金科水务工程(北京)有限公司 一种多膜元件过滤装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220250393A1 (en) * 2019-06-28 2022-08-11 Dic Corporation Hollow fiber degassing module, inkjet printer, and method for degassing liquid
US12409418B2 (en) * 2019-06-28 2025-09-09 Dic Corporation Hollow fiber degassing module, inkjet printer, and method for degassing liquid

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CN102380316A (zh) 2012-03-21

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