发明授权
US06861000B2 Running method and washing method for spiral wound membrane element and spiral wound membrane module
失效
螺旋缠绕膜元件和螺旋缠绕膜组件的运行方法和清洗方法
- 专利标题： Running method and washing method for spiral wound membrane element and spiral wound membrane module
- 专利标题（中）： 螺旋缠绕膜元件和螺旋缠绕膜组件的运行方法和清洗方法
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申请号： US09907994申请日： 2001-07-18
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公开(公告)号： US06861000B2公开(公告)日： 2005-03-01
- 发明人: Masaaki Ando , Satoru Ishihara , Katsumi Ishii
- 申请人： Masaaki Ando , Satoru Ishihara , Katsumi Ishii
- 申请人地址： JP Osaka
- 专利权人： Nitto Denko Corporation
- 当前专利权人： Nitto Denko Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Akin, Gump, Strauss, Hauer & Feld LLP
- 优先权： JP2000-219450 20000719; JP2001-208921 20010710
- 主分类号： B01D61/12
- IPC分类号： B01D61/12 ; B01D61/14 ; B01D61/22 ; B01D63/10 ; B01D63/12 ; B01D65/02 ; B01D69/10 ; C02F1/44 ; B01D61/00
摘要：
A spiral wound membrane module comprises a spiral wound membrane element including a separation membrane having high back pressure strength. The flow rate of permeate in filtration of the spiral wound membrane element is preferably set to 0.5 to 2.0 m3/m2/day, and the filtration time is preferably set to 10 to 300 minutes. The flow rate of wash water in washing is preferably set to 1.0 to 4.0 m3/m2/day, and the washing time is preferably set to 10 to 300 seconds. In such ranges, the ratio of the permeate volume in filtration to the permeate volume in back wash reverse filtration is set to be not more than 600.
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