WO2014190595A1 - Hollow fibrous membrane element - Google Patents

Hollow fibrous membrane element Download PDF

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Publication number
WO2014190595A1
WO2014190595A1 PCT/CN2013/079544 CN2013079544W WO2014190595A1 WO 2014190595 A1 WO2014190595 A1 WO 2014190595A1 CN 2013079544 W CN2013079544 W CN 2013079544W WO 2014190595 A1 WO2014190595 A1 WO 2014190595A1
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Prior art keywords
hollow fiber
fiber membrane
pressure
membrane element
casing
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PCT/CN2013/079544
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French (fr)
Chinese (zh)
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刘威威
包进锋
张星星
赵辉
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浙江开创环保科技有限公司
杭州求是膜技术有限公司
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Publication of WO2014190595A1 publication Critical patent/WO2014190595A1/en

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/10—Specific supply elements

Definitions

  • the present invention relates to a membrane element, in particular a hollow fiber membrane element, which is mainly used in the field of water treatment equipment.
  • the existing hollow fiber membrane components whether of the external pressure type, the suction negative pressure or the internal pressure type, are sealed at both ends, that is, both ends of the hollow fiber membrane are fixed to both ends of the outer casing by glue.
  • the utility model publication CN201470318U provides a column type hollow fiber membrane module having a stepped end structure, including a pressure-bearing outer casing, and the outer ends of the pressure-bearing outer casing are provided with ends, ends The end cover is connected; the inner part of the pressure-bearing outer casing is provided with a hollow fiber membrane, and the two sides of the hollow fiber membrane are respectively provided with a sealant, wherein the top of the end has a stepped structure, and the stepped structure protrudes from the sealant.
  • a top surface, a stepped structure and a top surface of the sealant form a micro-storage tank.
  • the utility model patent claims that the utility model has the advantages that the end end can be conveniently and accurately installed, and it can be closely matched with the pressure-bearing outer casing, and a small amount of water can be stored in the micro-storage water tank, so that the detection work is more intuitive and simple.
  • the utility model provides an internal pressure tube type detachable hollow fiber membrane module.
  • a positioning hole is arranged on the end of the bundle, and a hollow fiber membrane tube is arranged therein.
  • the positioning holes and the hollow fiber membrane tubes are respectively inserted into the positioning holes of the hollow fiber membranes, and maintain a uniform axial distribution.
  • the gap between the hollow fiber membrane tube and the positioning hole of the hollow fiber membrane tube in the bundle end is bonded by the adhesive, so that the membrane tube and the bundled end are integrated, and the positioning hole on the bundle end is used for the membrane
  • the tube and the bundle end are integrally connected to accessories such as a casing.
  • the utility model patent claims that the assembly is very convenient in installation and disassembly, and is easy to clean. It is especially suitable for the pretreatment of the liquid liquid and can process the liquid containing suspended solids, and has the advantages of simple structure, reliable performance and light transportation.
  • the above two types of column type ultrafiltration membrane elements have poor anti-pollution ability in actual operation, and pollutants are easily accumulated in the membrane tube, and it is difficult to discharge contaminants, and the membrane cleaning and regeneration effect is poor.
  • the columnar ultrafiltration membrane components of the existing structure must be configured in the pre-stage with complex pre-treatment processes such as sedimentation and sand filtration, which increases equipment input and operating costs. .
  • the membrane module is subjected to periodic frequent air washing and backwashing.
  • the membrane filament will be vigorously oscillated, and the membrane element fixed at both ends of the prior art is liable to cause filament breakage.
  • the hollow fiber membrane filaments generally have a process of stretching and orientation, and after being encapsulated in two fixed membrane shells, the hollow fiber membrane filaments tend to be deoriented, and the filament shrinkage occurs. Phenomenon can also cause breakage of the hollow fiber membrane filaments, thereby affecting the normal use of the components.
  • the technical problem to be solved by the invention is to provide a hollow fiber membrane element which has reasonable structural design, is not easy to break, has good filtering effect, is thoroughly cleaned, has reasonable water supply and long service life.
  • the hollow fiber membrane component which comprises a pressure-bearing outer casing and a hollow fiber membrane, and the structural features thereof are:
  • One end of the pressure-bearing outer casing is provided with a head cover for fixing the water distribution pipe and the closed pressure-bearing outer casing;
  • the pressure-bearing outer casing is provided with a casing liquid port, and the head cover is provided with a cap liquid port;
  • One end of all hollow fiber membranes is fixed to the pressure-bearing outer casing, and the inside of the hollow fiber membrane is connected to the liquid of the cap;
  • each of the hollow fiber membranes is distributed in a distributed manner inside the pressure-receiving casing.
  • the open hollow fiber membrane wire of the invention is fixed at one end with the pressure-bearing shell by glue, and the inside of the hollow fiber membrane is connected with the liquid outlet; the inner hole of the open hollow fiber membrane filament is closed at the other end, and is not pressed
  • the housing is fixed and dispersed inside the pressure-receiving housing.
  • the pollutants are deposited at one end of the cross-flow outlet, and the membrane element dispersed at one end solves the problem well, and the concentrated pollution The material is completely taken away by the wrong flow, so that the efficiency of the cross-flow process is maximized.
  • the distributed state of the dispersion whether in the air washing, water washing or mixed cleaning, can achieve mutual scrubbing between the hollow fiber membrane filaments, further improving the cleaning effect and efficiency.
  • the present invention is provided with a water distribution pipe which is disposed in the pressure-receiving casing, and one end of the water distribution pipe is disposed outside the pressure-bearing casing.
  • the arrangement of the water distribution pipe solves the problem of the uniformity of the inlet water pressure, and forms a reasonable water flow entry mode, which effectively alleviates the damage caused by the uneven pressure on the hollow fiber membrane, and reduces the turbulence and water inflow. Smoother and more continuous.
  • the cap cover provided at one end can effectively fix the water distribution pipe and achieve sealing at the same time, effectively separating the ultrafiltrate, the raw water and the concentrated liquid, and ensuring smooth and continuous operation of the filtration.
  • the structure is fixed at one end and freely dispersed at one end. When backwashing, the dirt between the hollow fiber membranes can be easily washed out, and at the same time, a large backwashing pressure is not required, and the damage to the hollow fiber membrane is small. Moreover, the dispersed structure can effectively distribute the pressure.
  • the reduction in the amount of fixing glue also saves cost and processing difficulty. At the same time, the efficiency of production is improved.
  • the housing port of the present invention is disposed on the pressure-receiving housing at the opposite end of the closure cap.
  • the casing liquid port is disposed at the position, which is advantageous for better discharge of the concentrate, and can be more favorable for the discharge of the dirt during backwashing.
  • the cap of the present invention is internally provided with a cap cavity, and one end of all the hollow fiber membranes is opened in the cap cavity, and the cap liquid port is disposed at the cap cavity.
  • the liquid to be filtered can be introduced into the pressure-bearing casing from the water distribution pipe, filtered through the hollow fiber membrane, enters into the hollow hollow fiber membrane, and then enters the head cavity, and finally the ultrafiltrate is obtained from the liquid of the cap.
  • the shell port is used to collect the concentrated liquid produced after filtration.
  • the liquid to be filtered can also be taken from the liquid opening of the cap, enter the hollow hollow fiber membrane, filtered through the hollow fiber membrane, and then enter the pressure-bearing casing, and finally the ultrafiltrate is obtained from the liquid port of the casing.
  • the cover head cavity can effectively buffer the liquid of the ultrafiltrate, and the ultra-filtrate liquid is more stable.
  • the head cover and the hollow fiber membrane of the present invention are fixed by a glue encapsulation, and the glue encapsulation layer has a thickness of 3 to 8 cm.
  • the pressure-bearing outer casing of the present invention has a cylindrical shape closed at one end.
  • the columnar design avoids unnecessary turbulence and backflushing, and the pressure distribution is more uniform.
  • the pressure-bearing outer casing of the present invention has an outer diameter of 225 mm, an inner diameter of 215 mm, and a length of 1.5 m.
  • the hollow fiber membrane of the present invention has a size of 1.7 m in length, 1.1 mm in outer diameter, and 0.55 mm in inner diameter.
  • the above size design can not only achieve better filtration effect, but also ensure the safe and stable operation of the hollow fiber membrane, while taking into account the water volume and pressure.
  • the pressure-bearing casing of the present invention is provided with an air inlet, an exhaust port and an aeration pipe.
  • the air inlet, the exhaust port and the aeration tube are arranged to perform air shock cleaning of the membrane wire.
  • the air inlet and the aeration tube of the present invention are disposed near the liquid port of the outer casing, and the air outlet is disposed below the upper sealant layer.
  • the position of the air inlet, exhaust port and aeration tube can achieve the best effect of air shock cleaning.
  • the gas-water countercurrent scrubbing can be performed to improve the gas-water scouring on the membrane surface, prevent the adhesion of contaminants on the membrane surface, improve the cleaning effect, and prolong the membrane service life.
  • one end of the water distribution pipe of the present invention is closed.
  • the water distribution pipe of the present invention is uniformly provided with a water distribution hole.
  • the length of the water distribution pipe of the present invention is greater than one-half of the length of the pressure-bearing outer casing.
  • the water distribution pipe design can effectively disperse the internal pressure, ensure the water output, and minimize the impact on the hollow fiber membrane, and can effectively utilize various parts of the hollow fiber membrane for filtration.
  • the design of the water distribution pipe and the water distribution pipe hole reduces the chance of collision, pulling and winding between the hollow fiber membranes, effectively protects the hollow fiber membrane yarn and improves the filtration effect. And increase the life of the hollow fiber membrane.
  • the present invention has the following advantages and effects as compared with the prior art.
  • the new technology makes the bottom air intake, the top water inlet gas-water countercurrent cross-flow operation mode can be realized, and the membrane pollution resistance is improved.
  • Figure 1 is a schematic view of the structure of the prior art.
  • Figure 2 is a schematic view of the structure of the present invention.
  • the hollow fiber membrane element of the present embodiment is composed of a pressure-receiving casing 7, a water conduit 5, a hollow fiber membrane 6, and a head cover 3.
  • the pressure-bearing casing 7 is a cylindrical structure with one end closed by a plastic material, and is made of a plastic pipe having an outer diameter of 225 mm, an inner diameter of 215 mm, and a length of 1.5 m.
  • the package cover 3 is sealingly disposed at the other end of the pressure-receiving casing 7, and the cover cover 3 has a cover cavity 10 in the middle thereof, and the cover cavity 10 is provided with a cover liquid port 2.
  • the head cavity 10 is isolated from the interior of the pressure-bearing housing 7.
  • the water distribution pipe 5 is disposed inside the pressure-receiving casing 7 through the package cover 3; a water distribution hole 9 is regularly disposed on the water distribution pipe 5.
  • the portion of the cloth water pipe 5 disposed outside the pressure-receiving casing 7 forms a water distribution port 1.
  • the hollow fiber membrane 6 has a length of 1.7 m, an outer diameter of 1.1 mm, and an inner diameter of 0.55 mm.
  • the other end of the pressure-bearing casing 7 is provided with a casing liquid port 8.
  • the inlet port 11 and the aeration pipe 13 are respectively disposed beside the casing liquid port 8, and the exhaust port 12 is disposed on the pressure-receiving casing 7 below the glue encapsulation layer 4.
  • the gas-water countercurrent scrubbing can be performed to improve the gas-water scouring on the surface of the hollow fiber membrane 6, to prevent the adhesion of contaminants on the membrane surface, to improve the cleaning effect, and to prolong the membrane service life.
  • the filtration method of step 1) includes dead-end filtration, cross-flow filtration or gas-water countercurrent scrubbing operation mode.
  • Dead end filtration the raw liquid enters the inside of the pressure-receiving casing 7 from the water outlet port 1, and the raw liquid passes through the hollow fiber membrane 6 after being filtered, enters the inner hole of the hollow fiber membrane 6, and then passes through the cap cavity 10 The side opening enters the cap chamber 10 and finally comes out of the cap outlet 2 to obtain a filtrate. After a period of time, the outer casing liquid opening 8 is opened, and the filtered concentrated liquid is discharged.
  • Cross-flow operation A portion of the concentrated water continuously discharges the concentrated contaminants from the outer casing liquid port 8 while the above normal operation is performed, thereby reducing the deposition of contaminants in the pressure-receiving casing 7.
  • the water supply port 1 enters the pressure-bearing casing 7, and the head liquid 2 produces water, and the compressed air enters from the air inlet 11 and is exhausted from the exhaust port 12, and the water inlet and the intake air flow in a countercurrent flow.
  • the hollow fiber membrane 6 is air-screwed, and water is produced, and the sewage can be continuously or intermittently discharged from the outer casing liquid port 8, thereby improving the pollution resistance of the membrane element.
  • the surface of the hollow fiber membrane 6 is cross-flowed by the clean water from the raw material water outlet 1, and the surface of the hollow fiber membrane 6 is smoothly discharged from the discharge port, and the compressed air can be introduced from the air inlet 11 at the same time.
  • the air is discharged from the exhaust port 12, and the hollow fiber membrane 6 is subjected to back-flow oscillation of gas and water to improve the flushing effect.
  • the clean water is backwashed from the cap liquid port 2, and the clean water is washed from the water producing side through the hollow fiber membrane 6 to the contaminants adhering to the wall of the hollow fiber membrane 6, and at the same time, from the air inlet 11
  • the compressed air is introduced, and the air is exhausted from the exhaust port 12, and the surface of the hollow fiber membrane 6 is subjected to gas-water scrubbing, and the flushed contaminants are smoothly flushed out from the casing liquid port 8.
  • the sealing method of the other end of the hollow fiber membrane 6 may be sealed by glue or by knotting, and it is only required that the hollow hole at the lower end of the hollow fiber membrane 6 is firmly blocked.
  • the hollow fiber membrane 6 is an open-type hollow fiber membrane.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A hollow fibrous membrane element comprises a pressure-bearing housing (7), and hollow fibrous membranes (6), and a water distributing pipe (5). A head sealing cover (3) is disposed at one end of the pressure-bearing housing (7). The head sealing cover (3) is used for fixing the water distributing pipe (5) and sealing the pressure-bearing housing (7). A housing liquid port (8) is disposed in the pressure-bearing housing (7). A cover head liquid port (2) is disposed in the head sealing cover (3). One end of each hollow fibrous membrane (6) is fixed with the pressure-bearing housing (7). The interior of the hollow fibrous membrane (6) communicates with the cover head liquid port (2). The other end of each hollow fibrous membrane (6) is sealed. Each hollow fibrous membrane (6) is radially distributed in the pressure-bearing housing (7).

Description

中空纤维膜元件 Hollow fiber membrane element 技术领域Technical field
本发明涉及一种膜元件，特别是一种中空纤维膜元件，主要应用在水处理设备领域中。 The present invention relates to a membrane element, in particular a hollow fiber membrane element, which is mainly used in the field of water treatment equipment.
背景技术Background technique
现有的中空纤维膜元件，不论是外压式、抽负压还是内压式均采用两端都封胶的方式，即用胶水将中空纤维膜两端都固定在外壳的两端。 The existing hollow fiber membrane components, whether of the external pressure type, the suction negative pressure or the internal pressure type, are sealed at both ends, that is, both ends of the hollow fiber membrane are fixed to both ends of the outer casing by glue.
比如，公开号为CN201470318U的实用新型专利就提供了一种具有台阶式端头结构的柱式中空纤维膜组件,包括承压式外壳,承压式外壳的外侧两端设有端头,端头连接端盖；承压式外壳的内部设有中空纤维膜,中空纤维膜的两侧分别设有密封胶,其特征在于,端头的顶部具有台阶式结构,台阶式结构凸出于密封胶的顶面,台阶式结构与密封胶的顶面之间形成微型蓄水槽。该实用新型专利声称，本实用新型的优点是能够方便准确的安装端头,使其与承压外壳紧密的配合,微型蓄水槽内可少量蓄水,使得检测工作更直观简便。 For example, the utility model publication CN201470318U provides a column type hollow fiber membrane module having a stepped end structure, including a pressure-bearing outer casing, and the outer ends of the pressure-bearing outer casing are provided with ends, ends The end cover is connected; the inner part of the pressure-bearing outer casing is provided with a hollow fiber membrane, and the two sides of the hollow fiber membrane are respectively provided with a sealant, wherein the top of the end has a stepped structure, and the stepped structure protrudes from the sealant. A top surface, a stepped structure and a top surface of the sealant form a micro-storage tank. The utility model patent claims that the utility model has the advantages that the end end can be conveniently and accurately installed, and it can be closely matched with the pressure-bearing outer casing, and a small amount of water can be stored in the micro-storage water tank, so that the detection work is more intuitive and simple.
又如公开号为CN20139932的实用新型专利本实用新型提供了一种内压管式可拆卸中空纤维膜组件,该中空纤维膜组件中,集束端头上有安装定位孔,内有中空纤维膜管定位孔,中空纤维膜管分别***中空纤维膜定位孔中,并保持均匀轴向分布。中空纤维膜管和集束端头内中空纤维膜管定位孔之间的间隙,用粘接剂进行粘接,使膜管与集束端头成为一个整体,集束端头上的安装定位孔用于膜管和集束端头整体与外壳等配件连接。该实用新型专利声称，该组件在安装和拆卸时非常方便,并容易清洗,特别适合对料液预处理要求不高并可处理含悬浮固体的料液,且结构简单,性能可靠,运输轻便。 Another example is a utility model patent disclosed in CN20139932. The utility model provides an internal pressure tube type detachable hollow fiber membrane module. In the hollow fiber membrane module, a positioning hole is arranged on the end of the bundle, and a hollow fiber membrane tube is arranged therein. The positioning holes and the hollow fiber membrane tubes are respectively inserted into the positioning holes of the hollow fiber membranes, and maintain a uniform axial distribution. The gap between the hollow fiber membrane tube and the positioning hole of the hollow fiber membrane tube in the bundle end is bonded by the adhesive, so that the membrane tube and the bundled end are integrated, and the positioning hole on the bundle end is used for the membrane The tube and the bundle end are integrally connected to accessories such as a casing. The utility model patent claims that the assembly is very convenient in installation and disassembly, and is easy to clean. It is especially suitable for the pretreatment of the liquid liquid and can process the liquid containing suspended solids, and has the advantages of simple structure, reliable performance and light transportation.
但是上述两种形式的柱式超滤膜元件在实际运行时抗污染能力差，污染物容易堆积在膜管内，很难将污染物排出，膜的清洗再生效果差。因为上述原因，为了减缓膜的污染，延长其使用寿命，现有结构的柱式超滤膜元件必须在前级配置沉淀、砂滤等复杂的预处工艺才能使用，增加了设备投入和运行成本。 However, the above two types of column type ultrafiltration membrane elements have poor anti-pollution ability in actual operation, and pollutants are easily accumulated in the membrane tube, and it is difficult to discharge contaminants, and the membrane cleaning and regeneration effect is poor. For the above reasons, in order to slow down the membrane pollution and prolong its service life, the columnar ultrafiltration membrane components of the existing structure must be configured in the pre-stage with complex pre-treatment processes such as sedimentation and sand filtration, which increases equipment input and operating costs. .
另外，在膜处理***中，膜的污染难以避免，为了减缓膜元件的污染，实际运行时，膜组件要进行周期性频繁的气洗和反洗。在膜在膜元件反洗及气洗过程中，对膜丝会产生剧烈振荡，对于现有技术两端固定的膜元件易造成膜丝断裂。再有，在制造过程中，中空纤维膜丝通常都有拉伸取向定型的工艺，被封装在两段固定的膜壳内后，中空纤维膜丝会有解取向的趋势，出现膜丝收缩的现象，也会导致中空纤维膜丝的断裂，从而影响组件的正常使用。 In addition, in the membrane treatment system, membrane fouling is difficult to avoid, in order to slow down the contamination of the membrane element, in actual operation, the membrane module is subjected to periodic frequent air washing and backwashing. During the backwashing and gas washing of the membrane element, the membrane filament will be vigorously oscillated, and the membrane element fixed at both ends of the prior art is liable to cause filament breakage. Furthermore, in the manufacturing process, the hollow fiber membrane filaments generally have a process of stretching and orientation, and after being encapsulated in two fixed membrane shells, the hollow fiber membrane filaments tend to be deoriented, and the filament shrinkage occurs. Phenomenon can also cause breakage of the hollow fiber membrane filaments, thereby affecting the normal use of the components.
另外根据对现有技术的膜元件在错流工艺下运行情况的解剖分析，发现污染物都是淤积在错流出口一端。这就造成了污染物的一端堆积现象，即使反复冲洗，也很难就污染物带走。 In addition, according to the anatomical analysis of the operation of the prior art membrane element under the cross-flow process, it was found that the contaminants were deposited at one end of the cross-flow outlet. This causes the accumulation of one end of the contaminant, and even if it is repeatedly washed, it is difficult to take away the contaminant.
技术问题technical problem
本发明所要解决的技术问题是提供一种结构设计合理、不易断丝、过滤效果好、清洗彻底、布水合理、使用寿命长的中空纤维膜元件。 The technical problem to be solved by the invention is to provide a hollow fiber membrane element which has reasonable structural design, is not easy to break, has good filtering effect, is thoroughly cleaned, has reasonable water supply and long service life.
技术解决方案Technical solution
本发明解决上述技术问题所采用的技术方案是该中空纤维膜元件，包括承压式外壳、中空纤维膜，其结构特点是： The technical solution adopted by the present invention to solve the above technical problems is the hollow fiber membrane component, which comprises a pressure-bearing outer casing and a hollow fiber membrane, and the structural features thereof are:
所述承压式外壳的一端设置有封头盖，封头盖用于固定布水管和封闭承压式外壳； One end of the pressure-bearing outer casing is provided with a head cover for fixing the water distribution pipe and the closed pressure-bearing outer casing;
所述承压式外壳上设置有外壳液口，所述封头盖设置有盖头液口； The pressure-bearing outer casing is provided with a casing liquid port, and the head cover is provided with a cap liquid port;
所有中空纤维膜的一端与承压式外壳固定，所述中空纤维膜的内部与盖头液口连通； One end of all hollow fiber membranes is fixed to the pressure-bearing outer casing, and the inside of the hollow fiber membrane is connected to the liquid of the cap;
所有中空纤维膜的另一端的内孔封闭，每根中空纤维膜散状分布在承压式外壳的内部。 The inner holes of the other end of all the hollow fiber membranes are closed, and each of the hollow fiber membranes is distributed in a distributed manner inside the pressure-receiving casing.
本发明所述的开放式中空纤维膜丝一端与承压式壳体用胶水固定，中空纤维膜的内部与出液口连通；开放式中空纤维膜丝另一端的内孔封闭，不与承压式壳体固定，分散在承压式外壳的内部。本发明中所述的开放式中空纤维膜元件，由于膜丝可自由摆动，消解了振荡对膜丝的冲击和收缩产生的应力，同时还能提高清洗的效果。根据对现有技术的膜元件在错流工艺下运行情况的解剖分析，发现污染物都是淤积在错流出口一端，而一端分散的膜元件则很好的解决了这一问题，浓缩的污染物完全被错流带走，使错流工艺效率达到极致。另外，散开的分布状态，无论在气洗、水洗还是混合清洗的时候，能够实现中空纤维膜膜丝之间的互相擦洗，进一步提高了清洗的效果和效率。 The open hollow fiber membrane wire of the invention is fixed at one end with the pressure-bearing shell by glue, and the inside of the hollow fiber membrane is connected with the liquid outlet; the inner hole of the open hollow fiber membrane filament is closed at the other end, and is not pressed The housing is fixed and dispersed inside the pressure-receiving housing. In the open type hollow fiber membrane element described in the present invention, since the membrane filament can swing freely, the stress generated by the shock and contraction of the membrane filament is sterilized, and the cleaning effect can be improved. According to the anatomical analysis of the operation of the prior art membrane element under the cross-flow process, it is found that the pollutants are deposited at one end of the cross-flow outlet, and the membrane element dispersed at one end solves the problem well, and the concentrated pollution The material is completely taken away by the wrong flow, so that the efficiency of the cross-flow process is maximized. In addition, the distributed state of the dispersion, whether in the air washing, water washing or mixed cleaning, can achieve mutual scrubbing between the hollow fiber membrane filaments, further improving the cleaning effect and efficiency.
作为优选，本发明设置有布水管，所述布水管设置在承压式外壳中，布水管的一端设置在承压式外壳外。 Preferably, the present invention is provided with a water distribution pipe which is disposed in the pressure-receiving casing, and one end of the water distribution pipe is disposed outside the pressure-bearing casing.
布水管的设置，很好的解决了进水压力的均匀性问题，形成了一个合理的水流进入方式，有效的缓解了压力不均对中空纤维膜造成的损坏，同时减少了紊流，进水更加顺畅连续。一端设置的封头盖，能够有效的固定布水管，同时实现密封，有效的分离了超滤液和原水、浓缩液，保证过滤的顺利、连续的运行。一端固定，一端自由分散的结构，反洗时，能够轻易的将中空纤维膜之间的污垢冲出，同时，不需要采用很大的反洗压力，对中空纤维膜的损伤小。而且，分散的结构，能够有效的分散压力。 The arrangement of the water distribution pipe solves the problem of the uniformity of the inlet water pressure, and forms a reasonable water flow entry mode, which effectively alleviates the damage caused by the uneven pressure on the hollow fiber membrane, and reduces the turbulence and water inflow. Smoother and more continuous. The cap cover provided at one end can effectively fix the water distribution pipe and achieve sealing at the same time, effectively separating the ultrafiltrate, the raw water and the concentrated liquid, and ensuring smooth and continuous operation of the filtration. The structure is fixed at one end and freely dispersed at one end. When backwashing, the dirt between the hollow fiber membranes can be easily washed out, and at the same time, a large backwashing pressure is not required, and the damage to the hollow fiber membrane is small. Moreover, the dispersed structure can effectively distribute the pressure.
固定用胶水用量的减少，也大大节约了成本和加工难度。同时提高了生产的效率。 The reduction in the amount of fixing glue also saves cost and processing difficulty. At the same time, the efficiency of production is improved.
作为优选，本发明所述的外壳液口设置在封头盖相对一端的承压式外壳上。 Preferably, the housing port of the present invention is disposed on the pressure-receiving housing at the opposite end of the closure cap.
由于中空纤维膜分散的设置在承压外壳内，所以外壳液口设置在该位置处，有利于浓缩液更好的排出，而且反洗时，能够更加有利于污垢的排出。 Since the hollow fiber membrane is dispersedly disposed in the pressure-receiving casing, the casing liquid port is disposed at the position, which is advantageous for better discharge of the concentrate, and can be more favorable for the discharge of the dirt during backwashing.
作为优选，本发明所述的封头盖内部设置有盖头腔，所有中空纤维膜的一端开口于盖头腔，所述盖头液口设置在盖头腔处。 Preferably, the cap of the present invention is internally provided with a cap cavity, and one end of all the hollow fiber membranes is opened in the cap cavity, and the cap liquid port is disposed at the cap cavity.
可以从布水管处进待过滤的液体，进入承压式外壳中，经过中空纤维膜的过滤后，进入中空的中空纤维膜内部中，进而进入盖头腔，最终从盖头液口得到超滤液。外壳液口用来收集过滤后产生的浓缩液。 The liquid to be filtered can be introduced into the pressure-bearing casing from the water distribution pipe, filtered through the hollow fiber membrane, enters into the hollow hollow fiber membrane, and then enters the head cavity, and finally the ultrafiltrate is obtained from the liquid of the cap. The shell port is used to collect the concentrated liquid produced after filtration.
也可以从盖头液口处进待过滤的液体，进入中空的中空纤维膜内部，经过中空纤维膜的过滤后，进入承压式外壳中，最终从外壳液口得到超滤液。 The liquid to be filtered can also be taken from the liquid opening of the cap, enter the hollow hollow fiber membrane, filtered through the hollow fiber membrane, and then enter the pressure-bearing casing, and finally the ultrafiltrate is obtained from the liquid port of the casing.
盖头腔对于超滤液的出液，能够起到有效的缓冲，保证了超滤液出液更加平稳。 The cover head cavity can effectively buffer the liquid of the ultrafiltrate, and the ultra-filtrate liquid is more stable.
作为优选，本发明所述的封头盖与中空纤维膜用胶水封装固定，所述胶水封装层的厚度为3~8cm。 Preferably, the head cover and the hollow fiber membrane of the present invention are fixed by a glue encapsulation, and the glue encapsulation layer has a thickness of 3 to 8 cm.
作为优选，本发明所述承压式外壳的形状为一端封闭的柱状。柱状的设计，能够避免形成不必要的紊流和反冲回流，压力分布也更加均匀。 Preferably, the pressure-bearing outer casing of the present invention has a cylindrical shape closed at one end. The columnar design avoids unnecessary turbulence and backflushing, and the pressure distribution is more uniform.
作为优选，本发明所述的承压式外壳的尺寸为，外径225mm，内径215mm，长1.5m。 Preferably, the pressure-bearing outer casing of the present invention has an outer diameter of 225 mm, an inner diameter of 215 mm, and a length of 1.5 m.
作为优选，本发明所述的中空纤维膜，其尺寸为，长度1.7m，外径1.1mm，内径0.55mm。 Preferably, the hollow fiber membrane of the present invention has a size of 1.7 m in length, 1.1 mm in outer diameter, and 0.55 mm in inner diameter.
以上尺寸的设计，既能实现较佳的过滤效果，又能保障中空纤维膜的安全、稳定的工作，同时兼顾出水量和压力。 The above size design can not only achieve better filtration effect, but also ensure the safe and stable operation of the hollow fiber membrane, while taking into account the water volume and pressure.
作为优选，本发明所述的承压式外壳上设置有进气口、排气口和曝气管。 Preferably, the pressure-bearing casing of the present invention is provided with an air inlet, an exhaust port and an aeration pipe.
进气口、排气口和曝气管的设置，能够实现对膜丝进行空气震荡清洗。 The air inlet, the exhaust port and the aeration tube are arranged to perform air shock cleaning of the membrane wire.
作为优选，本发明所述的进气口和曝气管设置在外壳液口附近，所述排气口设置在上端封胶层下方。 Preferably, the air inlet and the aeration tube of the present invention are disposed near the liquid port of the outer casing, and the air outlet is disposed below the upper sealant layer.
进气口、排气口和曝气管的位置能够实现空气震荡清洗的最佳效果。在运行或清洗时，可进行气水逆流擦洗，提高对膜表面的气水冲刷，防止污染物在膜表面的附着和提高清洗效果，延长膜使用寿命。 The position of the air inlet, exhaust port and aeration tube can achieve the best effect of air shock cleaning. During operation or cleaning, the gas-water countercurrent scrubbing can be performed to improve the gas-water scouring on the membrane surface, prevent the adhesion of contaminants on the membrane surface, improve the cleaning effect, and prolong the membrane service life.
作为优选，本发明所述的布水管的一端封闭。 Preferably, one end of the water distribution pipe of the present invention is closed.
作为优选，本发明所述的布水管上均匀设置有布水孔。 Preferably, the water distribution pipe of the present invention is uniformly provided with a water distribution hole.
作为优选，本发明所述的布水管的长度大于承压式外壳长度的二分之一。 Preferably, the length of the water distribution pipe of the present invention is greater than one-half of the length of the pressure-bearing outer casing.
这种布水管设计，能够有效的分散内部压力，保障出水量的同时，尽量的减少对中空纤维膜的冲击，能够有效的利用中空纤维膜的各个部分进行过滤。同时，由于中空纤维膜一端固定一端分散的结构，布水管的及布水管孔的设计，减少了中空纤维膜之间互相碰撞、拉扯、缠绕的机会，有效的保护中空纤维膜丝，提高过滤效果并增加中空纤维膜的寿命。 The water distribution pipe design can effectively disperse the internal pressure, ensure the water output, and minimize the impact on the hollow fiber membrane, and can effectively utilize various parts of the hollow fiber membrane for filtration. At the same time, because one end of the hollow fiber membrane is fixed at one end, the design of the water distribution pipe and the water distribution pipe hole reduces the chance of collision, pulling and winding between the hollow fiber membranes, effectively protects the hollow fiber membrane yarn and improves the filtration effect. And increase the life of the hollow fiber membrane.
有益效果Beneficial effect
本发明同现有技术相比具有以下优点及效果。 The present invention has the following advantages and effects as compared with the prior art.
1 、由于将原有的两端封闭结构改为单头封闭，另外一头单根膜丝进行封堵，每根膜丝之间是分散结构。在错流时，污染物能够最大程度的被带走，大大增加了组件的抗污能力。 1 Because the original two-end closed structure is changed to a single-head closed, another single-membrane wire is sealed, and each membrane has a dispersed structure. In the case of cross-flow, contaminants can be taken away to the greatest extent, greatly increasing the anti-fouling ability of the components.
2 、在膜元件清洗时，清洗出来的脏污能够彻底排出元件，使清洗效果大大提高，膜的恢复性的到提高，有效的提高了过滤效果和使用寿命。 2 When the membrane element is cleaned, the cleaned dirt can completely discharge the component, the cleaning effect is greatly improved, the recovery of the membrane is improved, and the filtration effect and the service life are effectively improved.
3 、由于每根膜丝都可以自由摆动，减少气洗时剧烈摆动造成的断丝现象，延长膜的使用寿命。 3, because each membrane wire can swing freely, reduce the phenomenon of broken wire caused by severe swing during air washing, and prolong the service life of the membrane.
4 、由于每根膜丝都可以自由摆动，提高了气擦洗的效果。 4, because each membrane wire can swing freely, improving the effect of air scrubbing.
5 、新技术使得底部进气，顶部进水的气水逆流错流运行方式得以实现，提高了膜的抗污染性。 5, the new technology makes the bottom air intake, the top water inlet gas-water countercurrent cross-flow operation mode can be realized, and the membrane pollution resistance is improved.
6 、只有一端进行全封胶，胶水用量减少，降低材料成本。并且降低了膜元件的加工难度，提高了生产效率。 6 Only one end is fully encapsulated, the amount of glue is reduced, and the material cost is reduced. Moreover, the processing difficulty of the membrane element is reduced, and the production efficiency is improved.
7 、在封闭侧加入布水管进水和布水，布水的压力更加均匀，过滤效果更好，对中空纤维膜丝的损伤小，有效的提高了使用寿命和运行稳定性。 7 In the closed side, the water supply pipe and the water are added, the pressure of the cloth water is more uniform, the filtering effect is better, the damage to the hollow fiber membrane wire is small, and the service life and the running stability are effectively improved.
附图说明DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。 In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.
图1为现有技术的结构示意图。 Figure 1 is a schematic view of the structure of the prior art.
图2为本发明的结构示意图。 Figure 2 is a schematic view of the structure of the present invention.
标号说明：布水管口1、盖头液口2、封头盖3、胶水封装层4、布水管5、中空纤维膜6、承压式外壳7、外壳液口8、布水孔9、盖头腔10、进气口11、排气口12、曝气管13。 DESCRIPTION OF REFERENCE NUMERALS: cloth outlet 1, cover head 2, head cover 3, glue encapsulation layer 4, cloth pipe 5, hollow fiber membrane 6, pressure-bearing casing 7, casing liquid port 8, cloth water hole 9, cover head cavity 10. Intake port 11, exhaust port 12, and aeration pipe 13.
本发明的最佳实施方式BEST MODE FOR CARRYING OUT THE INVENTION
如图2所示，本实施例的中空纤维膜元件由承压式外壳7、布水管5、中空纤维膜6、封头盖3组成。 As shown in Fig. 2, the hollow fiber membrane element of the present embodiment is composed of a pressure-receiving casing 7, a water conduit 5, a hollow fiber membrane 6, and a head cover 3.
其中，承压式外壳7为塑料材质的一端封闭的柱形结构，采用外径225mm，内径215mm，长1.5m的塑料管制成。封装盖3密封设置在承压式外壳7的另一端，封装盖3中间有盖头腔10，盖头腔10设置有盖头液口2。盖头腔10与承压式外壳7的内部互相隔离。布水管5穿过封装盖3设置在承压式外壳7的内部；在布水管5上设置有规律分布的布水孔9。布水管5设置在承压式外壳7外的部分形成布水管口1。 The pressure-bearing casing 7 is a cylindrical structure with one end closed by a plastic material, and is made of a plastic pipe having an outer diameter of 225 mm, an inner diameter of 215 mm, and a length of 1.5 m. The package cover 3 is sealingly disposed at the other end of the pressure-receiving casing 7, and the cover cover 3 has a cover cavity 10 in the middle thereof, and the cover cavity 10 is provided with a cover liquid port 2. The head cavity 10 is isolated from the interior of the pressure-bearing housing 7. The water distribution pipe 5 is disposed inside the pressure-receiving casing 7 through the package cover 3; a water distribution hole 9 is regularly disposed on the water distribution pipe 5. The portion of the cloth water pipe 5 disposed outside the pressure-receiving casing 7 forms a water distribution port 1.
中空纤维膜6的一端中心孔封闭，另外一端用胶水和承压式外壳7灌封为一个整体并开口于盖头腔10，胶水封装层4的厚度为6cm。所有中空纤维膜6散落的装入承压式外壳7内。中空纤维膜6的长度为1.7m，外径为1.1mm，内径为0.55mm。 One end of the hollow fiber membrane 6 is closed at the center hole, and the other end is potted with a glue and a pressure-bearing casing 7 as a whole and opened in the head cavity 10, and the thickness of the glue encapsulation layer 4 is 6 cm. All of the hollow fiber membranes 6 are scattered into the pressure-receiving casing 7. The hollow fiber membrane 6 has a length of 1.7 m, an outer diameter of 1.1 mm, and an inner diameter of 0.55 mm.
承压式外壳7的另一端设置了外壳液口8。 The other end of the pressure-bearing casing 7 is provided with a casing liquid port 8.
承压式外壳7的的下方，即外壳液口8旁边分别设置了进气口11、曝气管13，而排气口12设置在胶水封装层4下方的承压式外壳7上。 Below the pressure-receiving casing 7, that is, the inlet port 11 and the aeration pipe 13 are respectively disposed beside the casing liquid port 8, and the exhaust port 12 is disposed on the pressure-receiving casing 7 below the glue encapsulation layer 4.
在运行或清洗时，可进行气水逆流擦洗，提高对中空纤维膜6表面的气水冲刷，防止污染物在膜表面的附着和提高清洗效果，延长膜使用寿命。 During operation or cleaning, the gas-water countercurrent scrubbing can be performed to improve the gas-water scouring on the surface of the hollow fiber membrane 6, to prevent the adhesion of contaminants on the membrane surface, to improve the cleaning effect, and to prolong the membrane service life.
本实施例的中空纤维膜元件运行方式的步骤如下： The steps of the operation mode of the hollow fiber membrane element of this embodiment are as follows:
1）过滤 原水从布水管口1进入，清液从盖头出液口2流出； 1) Filtration Raw water enters from the water supply port 1, and the clear liquid flows out from the cover liquid outlet 2;
2）气洗 从进气口11通入压缩空气，对中空纤维膜6进行空气震荡清洗； 2) air washing, the compressed air is introduced from the air inlet 11, and the hollow fiber membrane 6 is subjected to air shock cleaning;
3）反洗 水从盖头出液口2进入，对中空纤维膜6进行反向清洗； 3) backwashing water enters from the lid outlet 2, and the hollow fiber membrane 6 is reversely cleaned;
4）正洗：原水从布水管口进入，浓水从外壳液口8排除。 4) Washing: The raw water enters from the water pipe outlet, and the concentrated water is removed from the casing liquid port 8.
步骤1）的过滤方式包括：死端过滤、错流过滤或气水逆流擦洗运行模式。 The filtration method of step 1) includes dead-end filtration, cross-flow filtration or gas-water countercurrent scrubbing operation mode.
死端过滤：原液从布水管口1进入承压式外壳7的内部，由于压力的作用，原液通过中空纤维膜6的过滤后，进入中空纤维膜6的内孔，然后通过在盖头腔10一侧的开口，进入盖头腔10，最后从盖头出液口2出来，得到过滤液。一段时间后，打开外壳液口8，外排过滤后的浓缩液。 Dead end filtration: the raw liquid enters the inside of the pressure-receiving casing 7 from the water outlet port 1, and the raw liquid passes through the hollow fiber membrane 6 after being filtered, enters the inner hole of the hollow fiber membrane 6, and then passes through the cap cavity 10 The side opening enters the cap chamber 10 and finally comes out of the cap outlet 2 to obtain a filtrate. After a period of time, the outer casing liquid opening 8 is opened, and the filtered concentrated liquid is discharged.
错流运行：在上述正常工作的同时一部分浓水从外壳液口8将浓缩的污染物连续排出，减少污染物在承压式外壳7内的淤积。 Cross-flow operation: A portion of the concentrated water continuously discharges the concentrated contaminants from the outer casing liquid port 8 while the above normal operation is performed, thereby reducing the deposition of contaminants in the pressure-receiving casing 7.
气水逆流擦洗运行：布水管口1进入承压式外壳7，盖头液口2产水的同时，从进气口11进压缩空气，并从排气口12出气，进水和进气成逆流形式，边对中空纤维膜6进行气擦洗，边产水，还可从外壳液口8连续或间歇式排污，提高膜元件的抗污染性。 Gas-water countercurrent scrubbing operation: the water supply port 1 enters the pressure-bearing casing 7, and the head liquid 2 produces water, and the compressed air enters from the air inlet 11 and is exhausted from the exhaust port 12, and the water inlet and the intake air flow in a countercurrent flow. In the form, the hollow fiber membrane 6 is air-screwed, and water is produced, and the sewage can be continuously or intermittently discharged from the outer casing liquid port 8, thereby improving the pollution resistance of the membrane element.
正洗时：从原液布水管口1进干净水对中空纤维膜6表面进行错流冲刷，将中空纤维膜6表面污染物顺利的从排口排出，同时可从进气口11进压缩空气，并从排气口12排出空气，对中空纤维膜6进行气、水逆流振荡冲刷，提高冲洗效果。 During the washing: the surface of the hollow fiber membrane 6 is cross-flowed by the clean water from the raw material water outlet 1, and the surface of the hollow fiber membrane 6 is smoothly discharged from the discharge port, and the compressed air can be introduced from the air inlet 11 at the same time. The air is discharged from the exhaust port 12, and the hollow fiber membrane 6 is subjected to back-flow oscillation of gas and water to improve the flushing effect.
反洗时：从盖头液口2进干净水反冲洗，干净水从产水侧透过中空纤维膜6将粘附在中空纤维膜6壁上的污染物冲洗下来，同时可从进气口11进压缩空气，并从排气口12排出空气，对中空纤维膜6表面进行气水擦洗，冲洗出的污染物顺利的从外壳液口8中冲出。 During backwashing: the clean water is backwashed from the cap liquid port 2, and the clean water is washed from the water producing side through the hollow fiber membrane 6 to the contaminants adhering to the wall of the hollow fiber membrane 6, and at the same time, from the air inlet 11 The compressed air is introduced, and the air is exhausted from the exhaust port 12, and the surface of the hollow fiber membrane 6 is subjected to gas-water scrubbing, and the flushed contaminants are smoothly flushed out from the casing liquid port 8.
中空纤维膜6另一端的封闭方式，可以采用胶水封堵，也可以采用打结的方法，只需保证，中空纤维膜6下端的中空孔被牢固的堵住。中空纤维膜6为开放式的中空纤维膜。 The sealing method of the other end of the hollow fiber membrane 6 may be sealed by glue or by knotting, and it is only required that the hollow hole at the lower end of the hollow fiber membrane 6 is firmly blocked. The hollow fiber membrane 6 is an open-type hollow fiber membrane.
此外，需要说明的是，本说明书中所描述的具体实施例，其零、部件的形状、所取名称等可以不同。凡依本发明专利构思所述的构造、特征及原理所做的等效或简单变化，均包括于本发明专利的保护范围内。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离本发明的结构或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。 Further, it should be noted that the specific embodiments described in the present specification may have zeros, shape of components, names taken, and the like. Equivalent or simple changes made to the structures, features and principles of the present invention are included in the scope of the invention. A person skilled in the art can make various modifications or additions to the specific embodiments described or in a similar manner, without departing from the scope of the invention or the scope defined by the claims. All should fall within the scope of protection of the present invention.
本发明的实施方式Embodiments of the invention
工业实用性Industrial applicability
序列表自由内容Sequence table free content

Claims (10)

  1. 一种 中空纤维膜元件 ， 包括承压式外壳、中空纤维膜，其特征是： 所述 承压式外壳 的 一端设置有封头盖，封头盖用于固定布水管和封闭承压式外壳； 所述承压式外壳上设置有外壳液口，所述封头盖设置有盖头液口； 所有中空纤维膜的 一 端 与承压式外壳固定，所述中空纤维膜的内部与盖头液口连通； 所有中空纤维膜的另一端的内孔封闭，每根中空纤维膜散状分布在承压式 外壳 的内部。  A hollow fiber membrane element comprising a pressure-bearing outer casing and a hollow fiber membrane, characterized in that: the pressure-bearing outer casing One end is provided with a head cover for fixing the water distribution pipe and the closed pressure-bearing outer casing; the pressure-bearing outer casing is provided with a casing liquid port, and the head cover is provided with a cap liquid port; all hollow fiber membranes One end The inside of the hollow fiber membrane is fixed to the head liquid port; the inner hole of the other end of all the hollow fiber membranes is closed, and each hollow fiber membrane is distributed in a distributed manner inside the pressure-receiving casing.
  2. 根据权利要求1所述的中空纤维膜元件，其特征是：设置有布水管，所述布水管设置在承压式外壳中，布水管的一端设置在承压式外壳外。 The hollow fiber membrane element according to claim 1, wherein a water distribution pipe is provided, and the water distribution pipe is disposed in the pressure-receiving outer casing, and one end of the water distribution pipe is disposed outside the pressure-receiving outer casing.
  3. 根据权利要求1所述的中空纤维膜元件，其特征是：所述的外壳液口设置在封头盖相对一端的承压式外壳上。 The hollow fiber membrane element according to claim 1, wherein said housing liquid port is provided on a pressure-receiving housing at an opposite end of the head cover.
  4. 根据权利要求1所述的中空纤维膜元件，其特征是：所述的封头盖内部设置有盖头腔，所有中空纤维膜的一端开口于盖头腔，所述盖头液口设置在盖头腔处；封头盖与中空纤维膜用胶水封装固定，所述胶水封装层的厚度为3~8cm。 The hollow fiber membrane element according to claim 1, wherein said cap cover is internally provided with a cap cavity, one end of all hollow fiber membranes is open in the cap cavity, and the cap liquid port is disposed at the cap cavity; The head cover and the hollow fiber membrane are fixed by a glue package, and the glue encapsulation layer has a thickness of 3 to 8 cm.
  5. 根据权利要求1所述的中空纤维膜元件，其特征是：所述承压式外壳的形状为一端封闭的柱状。 The hollow fiber membrane element according to claim 1, wherein the pressure-receiving outer casing has a column shape closed at one end.
  6. 根据权利要求5所述的中空纤维膜元件，其特征是：所述的承压式外壳的尺寸为，外径225mm，内径215mm，长1.5m，所述的中空纤维膜尺寸为，长度1.7m，外径1.1mm，内径0.55mm。 The hollow fiber membrane element according to claim 5, wherein said pressure-bearing outer casing has a size of 225 mm in outer diameter, 215 mm in inner diameter and 1.5 m in length, and said hollow fiber membrane has a size of 1.7 m in length. , outer diameter 1.1mm, inner diameter 0.55mm.
  7. 根据权利要求1所述的中空纤维膜元件，其特征是： 所述的承压式外壳上设置有进气口、排气口和曝气管。 The hollow fiber membrane element according to claim 1, wherein: The pressure-bearing casing is provided with an air inlet, an exhaust port and an aeration pipe.
  8. 根据权利要求7所述的中空纤维膜元件，其特征是：所述的进气口和曝气管设置在外壳液口附近，所述排气口设置在上端封胶层下方。 The hollow fiber membrane element according to claim 7, wherein said inlet port and said aeration tube are disposed adjacent to said housing liquid port, and said exhaust port is disposed below said upper end sealant layer.
  9. 根据权利要求2所述的中空纤维膜元件，其特征是：所述的布水管的一端封闭，所述的布水管上均匀设置有布水孔。 The hollow fiber membrane element according to claim 2, wherein one end of said water distribution pipe is closed, and said water distribution pipe is uniformly provided with a water distribution hole.
  10. 根据权利要求2所述的中空纤维膜元件，其特征是：所述的布水管的长度大于承压式外壳长度的二分之一。 The hollow fiber membrane element according to claim 2, wherein said cloth pipe has a length greater than one-half of the length of the pressure-bearing casing.
PCT/CN2013/079544 2013-05-30 2013-07-17 Hollow fibrous membrane element WO2014190595A1 (en)

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