Invention Grant
- Patent Title: Composite semipermeable membrane, production process thereof, and element, fluid separation equipment and treatment method for boron-containing water using the same
- Patent Title (中): 复合半透膜及其制造方法，元素，流体分离设备及使用其的含硼水的处理方法
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Application No.: US11666752Application Date: 2005-11-04
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Publication No.: US07641054B2Publication Date: 2010-01-05
- Inventor: Takao Sasaki , Hiroki Tomioka , Koji Nakatsuji
- Applicant: Takao Sasaki , Hiroki Tomioka , Koji Nakatsuji
- Applicant Address: JP Tokyo
- Assignee: Toray Industries, Inc.
- Current Assignee: Toray Industries, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2004-330273 20041115
- International Application: PCT/JP2005/020670 WO 20051104
- International Announcement: WO2006/051888 WO 20060518
- Main IPC: B01D29/00
- IPC: B01D29/00 ; B01D39/14 ; B01D67/00
Abstract:
A composite semipermeable membrane, which comprises a separating functional layer comprising a reactant of polyfunctional amine with polyfunctional acid halide, wherein a water-soluble organic material is in contact with the separating functional layer, and the separating functional layer has a boron removal ratio of 95% or more, when seawater at 25° C. having a pH of 6.5, a boron concentration of 5 ppm and a TDS concentration of 3.5% by weight is permeated under an operation pressure of 5.5 MPa.
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