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公开(公告)号：JP2003112017A
公开(公告)日：2003-04-15
申请号：JP2001308675
申请日：2001-10-04
Applicant: TORAY INDUSTRIES
Inventor： SAKAI KENJI , ONOE TOSHIJI , OKADA HIROMICHI
Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive filtration membrane module in which a plurality of filtration membrane elements can be inserted and fixed in a box unit in which the filtration membrane elements are disposed in parallel to one another in a vertical posture at the prescribed intervals, and to provide a method for producing clean water. SOLUTION: This filtration membrane module is obtained by housing several sheets of the filtration membrane elements each having a flow passage material and a filtration membrane formed on a supporting sheet in this order in parallel to one another in the box unit. The distance between the adjacent filtration membrane elements is kept by one of a plurality of distance keeping members arranged in the filtration membrane element housing direction.
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公开(公告)号：JP2000117062A
公开(公告)日：2000-04-25
申请号：JP29521798
申请日：1998-10-16
Applicant: TORAY INDUSTRIES
Inventor： TANIGUCHI MASAHIDE , FUJII YOSHINARI , SAKAI KENJI
Abstract: PROBLEM TO BE SOLVED: To obtain a hollow fiber membrane module capable of stably attaining high permeated water quantity and high water quality over a long period. SOLUTION: The hollow fiber membrane module formed by putting a plurality of hollow fiber membranes 1 in a vessel 7 after sticking and fixing the end parts of both sides and opening the both end parts is used with a system that raw water to be treated is passed from the inside of the hollow fiber membranes, and permeated water is obtained from the outside of the hollow fiber membranes 1. The surface area of a part having the min. cross-sectional surface area among the cross-sectional surface area S of the vessel inside part in the unsticking and unfixed part of the hollow fiber membrane 1 is expressed by S1, and the cross-sectional surface area in the vessel 7 inside part in the vicinity of a pipeline for allowing the inside and the outside of the hollow fiber membranes 1 to communicate with each other is expressed by S2. S2 is practically larger than S1.
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公开(公告)号：JP2000084375A
公开(公告)日：2000-03-28
申请号：JP25396498
申请日：1998-09-08
Applicant: TORAY INDUSTRIES
Inventor： TANIGUCHI MASAHIDE , FUJII YOSHINARI , SAKAI KENJI
Abstract: PROBLEM TO BE SOLVED: To reduce the increase of pressure and the damage under use by using a vessel having a structure that the area of not smaller one in the cross-sectional area of the vessel in the vicinity of two sticking fixed parts is larger than the max. cross-sectional area of a part of the vessel surrounding the part, where a hollow fiber membrane is not stuck and fixed. SOLUTION: An original water is supplied from a pipe line 5 or a pipe line 7, soil in the original water is interrupted on the outside surface of the hollow fiber membrane (fiber membrane) 1 and the purified water permeated through the fiber membrane 1 is taken out from a permeated water outlet 4 through the inside of the fiber membrane. The cleaning of the outside surface of the fiber membrane 1 is executed by the share force due to the original water flow, the air blowing flow or the rocking or flow of the fiber membrane 1. To increase the cleaning recovery of the fiber membrane 1 and to prevent, the damage to the fiber membrane 1 caused by the shear force the cross-sectional area in the root part 2 of the fiber membrane 1, which is easily damaged, is made larger than the cross-sectional area of the non-sticking part of the fiber membrane 1, the flow rate on the membrane surface in the non-sticking part of the fiber membrane 1 at the time of cleaning is kept high to maintain high cleaning ability and the flow rate on the membrane surface in the fiber membrane root part 2 is suppressed. As a result, the increase of pressure is suppressed and the damage under use is prevented.
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公开(公告)号：JP2000037616A
公开(公告)日：2000-02-08
申请号：JP20769498
申请日：1998-07-23
Applicant: TORAY INDUSTRIES
Inventor： SAKAI KENJI , TANIGUCHI MASAHIDE
Abstract: PROBLEM TO BE SOLVED: To provide a hollow-fiber membrane module and an operation method of the module capable of efficiently preventing hollow-fiber membrane rupture due to exceeding vibration of the hollow-fiber membranes in the case air scrubbing is carried out. SOLUTION: In a hollow-fiber membrane module comprising a large number of hollow-fiber membranes of which at least one end parts are stuck and fixed and installed in a housing, a protective member 5 surrounding at least a part of the circumference of the hollow-fiber membranes 4 is installed in a position of the circumference of the hollow-fiber membranes 4 besides the stuck and fixed parts. The protective member 5 satisfies the following relation; 0.65
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