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111. 发明专利

JPH06277459A MEMBRANE SEPARATION DEVICE 失效
公开(公告)号：JPH06277459A
公开(公告)日：1994-10-04
申请号：JP6840293
申请日：1993-03-26
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI
IPC分类号： B01D63/00 , B01D63/02
摘要： PURPOSE:To provide a hollow fiber membrane unit laminated type membrane separation device wherein a suspended substance is hard to adhere to a hollow fiber membrane unit even when raw water high in the concn. of a suspended solid is used. CONSTITUTION:A large number of hollow fiber membranes 2 are parallelly arranged in a planar state. Both end parts of the hollow fiber membranes 2 in the longitudinal direction thereof are solidified by synthetic resin potting materials 3, 4. Many hollow fiber membrane units 1 wherein the hollow fiber membranes are arranged in a reed screen state are laminated so as to interpose gaps between the respective units. Raw water is introduced into the gaps between the lamination surfaces (read screen surfaces) of the hollow fiber membrane units of this membrane separation device from the parts of the side surfaces (the side surfaces of the units in the extending and parallel directions of the hollow fiber membranes) in the direction parallel to the lamination surfaces. The water transmitted into the hollow fiber membranes 2 flows in the hollow fiber membranes 2 to enter a transmitted water taking-out chamber to be taken out of the membrane separation device from transmitted water taking-out ports 10, 11.

112. 发明专利

JPH06182339A WATER PURIFICATION DEVICE 失效
公开(公告)号：JPH06182339A
公开(公告)日：1994-07-05
申请号：JP35657992
申请日：1992-12-22
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI
IPC分类号： B01D61/08 , C02F1/44 , E03B7/07
摘要： PURPOSE:To prevent a temporary pollution of service water fed to a water tap from occurring by the dirt generated in a film module in a water purification device for branching the supply of intake service water into the water tap and a tap for water to drink and preparing the permeated water from the service water filtered by a membrane module. CONSTITUTION:A branch 11 branched from a main pipe 10 of service water supply is connected with a water tap 24, and a bypass pipe 30 is connected with the branch in parallel an a pump 31 and a membrane module 20 are mounted on the bypass pipe, and permeated water in the membrane module is supplied to a tap 27 for water to drink.

113. 发明专利

JPH06182164A MEMBRANE SEPARATION DEVICE 失效
公开(公告)号：JPH06182164A
公开(公告)日：1994-07-05
申请号：JP33588492
申请日：1992-12-16
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI , KUDO MARIKO
IPC分类号： B01D61/58 , B01D65/10 , C02F1/44
摘要： PURPOSE:To detect a leakage of primary-side unfiltered liquid from a membrane separation device. CONSTITUTION:Untreated water is separated using a membrane by a main membrane separation device system, and the permeating water is made to enter a filtration membrane unit 4. If any damage occurs on the filtration membrane 3a of the system 3 and the primary-side unfiltered liquid leaks to the secondary side, a turbid matter contained in the leaking primary- side unfiltered liquid is captured by the filtration membrane unit 4, so that the turbid matter no longer flows out of a treated water takeout pipe. If the turbid matter is captured by the precision filtration membrane 4a of the filtration membrane unit 4, a loss in the water permeation pressure of the precision filtration membrane 4a increases. Therefore, the leakage of the untreated water can be detected by detecting this pressure loss using a detector. Consequently, if the primary-side untreated water leaks from the main membrane separation device system 3, the turbid matter is captured by the filtration member 3a on the downstream side, so that the turbid matter is prevented from leaking into an area outside the membrane separation device. In addition, the leakage of the turbid matter from the main membrane separation device system 3 can be detected by detecting a rise in the water permeation pressure loss of the precision filtration membrane on the downstream side. Thus, any damage on the membrane of the main membrane separation device system 3 can be detected.

114. 发明专利

JPH05329477A MEMBRANE SEPARATION 失效
公开(公告)号：JPH05329477A
公开(公告)日：1993-12-14
申请号：JP19923591
申请日：1991-08-08
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI
IPC分类号： B01D61/12 , C02F1/44 , C02F1/76 , C02F3/02 , C02F9/00
摘要： PURPOSE:To improve the membrane filtration efficiency of the membrane sepn. device in the membrane sepn. method for treating biologically treated water with the membrane sepn. device and to improve the treatment efficiency. CONSTITUTION:A chlorine agent 13 is added to the biologically treated water from an aerobic membrane treatment device 10 to adjust the free chlorine concn. thereof to 0.3 to 1.5mg/l and thereafter, this water is supplied to the membrane sepn. device 17. The filterability of the bacteria contained in the outflow water of the aerobic membrane treatment device is improved and the membrane sepn. efficiency is improved. This method is particularly effective for the treatment of the recovered water from washing of the ultrapure water of a semiconductor production process.

115. 发明专利

JPH0487695A ORGANIC WASTE WATER TREATING DEVICE 失效
公开(公告)号：JPH0487695A
公开(公告)日：1992-03-19
申请号：JP20094190
申请日：1990-07-27
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI
IPC分类号： B01D63/10 , C02F1/44 , C02F3/12 , C02F9/00
摘要： PURPOSE:To enhance the oxygen dissolution efficiency of an aerobic bioreaction chamber by using a spiral type membrane module wound with a separating membrane via a spacer of a corrugated board shape on the outer periphery of a water collecting pipe as the membrane module of a membrane separator. CONSTITUTION:Raw water is introduced from a piping 11 into the aerobic biochemical reaction chamber 1 and is subjected to a aerobic biochemical reaction treatment. The treated liquid is introduced through an introducing piping 12 into the membrane separator 2 and air is supplied to this liquid from a supplying piping 15 to form the air-liquid mixture which is introduced into the membrane separator 2. While the permeated water of the membrane separator 2 is taken out as treated water, the concd. water is returned to the aerobic biochemical reaction chamber 1. The air in the bubble-mixed liquid flowing into the membrane separator 2 dissolves sufficiently into the liquid during flows together with the liquid in the membrane module 2B. The liquid into which the air is sufficiently dissolved is returned to the aerobic biochemical reaction chamber 1 after the passage through the membrane module 2B and is thereby extremely efficiently biologically treated.

116. 发明专利

JPH0418994A TREATMENT OF ORGANIC WASTE WATER 失效
公开(公告)号：JPH0418994A
公开(公告)日：1992-01-23
申请号：JP12447390
申请日：1990-05-15
申请人： KURITA WATER IND LTD
发明人： OINUMA MASAYOSHI , SAWADA SHIGEKI , ISHII YASUHIKO , SATO TAKESHI
IPC分类号： B01D61/14 , B01D61/58 , C02F1/44 , C02F1/52 , C02F9/00
摘要： PURPOSE:To prevent the decrease in the rate of the water permeated through a membrane by flocculating of excess sludge and returning of a dehydrated filtrate to waste water treating stage and to execute an efficient treatment by introducing the filtrate of a dehydration treating device into a flocculation reaction chamber only when the permeated water of a 1st membrane separator is introduced into the flocculation reaction chamber. CONSTITUTION:The dehydrated filtrate in a filtrate storage tank 9 is returned into the flocculation reaction chamber 4 at the time of the operation of the 1st UF membrane separator 3, i.e., only when the permeated water from the 1st UF membrane separator 3 is introduced into the flocculation reaction chamber 4. The free polymers existing in the dehydrated filtrate, therefore, contribute preferentially to the flocculation reaction in the flocculation reaction chamber 4 and flocculate nearly completely. Consequently, the free polymers are hardly returned to the 2nd membrane separator 6 of the post stage. The degradation in the flux of the 2nd membrane separator 6 occurring in the adsorption of the polymers onto the membrane surfaces is, therefore, prevented and the effective treatment is executed.

117. 发明专利

JPH0315514B2 失效
公开(公告)号：JPH0315514B2
公开(公告)日：1991-03-01
申请号：JP12216683
申请日：1983-07-05
申请人： KURITA WATER IND LTD
发明人： JOKO ISAO , SAWADA SHIGEKI , OOHASHI NORIO , GOTO CHUICHI
IPC分类号： C02F1/28 , C02F1/42 , C02F1/58

118. 发明专利

JPH0342019A MEMBRANE SEPARATION APPARATUS 失效
公开(公告)号：JPH0342019A
公开(公告)日：1991-02-22
申请号：JP17494989
申请日：1989-07-06
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI
IPC分类号： B01D65/02
摘要： PURPOSE:To prevent the raw water flow passage of a membrane module from clogging in the recirculation of taken-out water by collecting efficiently the admixtures, such as an exfoliated matter, which are separated from the surface of separation membrane of a membrane module and flowed out into the taken- out water, and discharging them from a circulation water system. CONSTITUTION:The raw water in a raw water tank 1 is introduced into a raw water chamber of a membrane module 2, and the water taken out of the raw water chamber is returned to the raw water tank 1. In a flow passage 15 for the taken-out water, a solid-liquid separation unit 3, such as a screen, is provided to carry out the solid-liquid separation treatment. Thus, the admixtures, such as an exfoliated matter, which are separated from the surface of separation membrane of the membrane module and flowed out into the taken- out water are efficiently collected and discharged from the circulation system. As a result, the raw water passage of the membrane module is prevented from clogging when the taken-out water is recirculated.

119. 发明专利

JPH0251679B2 失效
公开(公告)号：JPH0251679B2
公开(公告)日：1990-11-08
申请号：JP16794082
申请日：1982-09-27
申请人： KURITA WATER IND LTD
发明人： JOKO ISAO , SAWADA SHIGEKI , OOI MASAO , SHIBATA MASAHIDE
IPC分类号： C02F1/28 , C02F1/42 , C02F3/30 , C02F9/00

120. 发明专利

JPH0240223A MEMBRANE SEPARATION DEVICE 失效
公开(公告)号：JPH0240223A
公开(公告)日：1990-02-09
申请号：JP19234288
申请日：1988-08-01
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI
IPC分类号： B01D63/14
摘要： PURPOSE:To obtain the membrane separation device which has a high treatment efficiency and is easy to wash the membrane surface by providing membrane elements consisting of separation membranes stretched on the supporting plates projected from a central water collecting pipe. CONSTITUTION:The membrane element 1 of the membrane separation device consists of (1) the water collecting pipe 2, (2) two main supporting plates 3 and 4 projected from the water collecting pipe 2, (3) subsupporting plates 31-38, and 41-48 which are vertically provided to the main supporting plates 3 and 4, (4) auxiliary supporting plates 21-26 which are projected from the water collecting pipe 2 and are parallel to subsupporting plates 31-38 and 41-48, and (5) the separation membranes stretched on these supporting plates 3, 4, 31-38, 41-48, 21-26. The membrane elements 1 is inserted into the pressure-resisting tubular vessel 8. Plural water collecting holes are provided to the connection parts between the supporting plates 3, 4, 21-26 and the water collecting pipe 2 and between the main supporting plates 3, 4 and subsupporting plates 31-38, 41-48 so as to allow to transfer the water permeated through the separation membrane 7 to the water collecting pipe 2. Thus the water permeated through the separation membrane 7 flows between the separation membrane 7 and the supporting plates 33, 34 and is collected in the water collecting pipe 2 through the water collecting holes.

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