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Title:
SEMIPERMEABLE MEMBRANE SEPARATION DEVICE AND SEMIPERMEABLE MEMBRANE SEPARATION DEVICE OPERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2015/141693
Kind Code:
A1
Abstract:
In this semipermeable membrane separation device for separating concentrated water and permeated water, a semipermeable membrane unit is arranged downstream of a booster pump which takes raw water, which is seawater or high concentration brine water with a salt concentration of 1 wt% or greater, and supplies pressurized feed water, which is the raw water or pre-treated water. The semipermeable membrane unit comprises one cylindrical pressure vessel comprising multiple semipermeable membrane elements housed in series therein, and feed water is supplied from one end of the semipermeable membrane unit. The semipermeable membrane unit comprises modules structured such that unpermeated water obtained from a semipermeable membrane element in a previous stage is supplied to a semipermeable membrane element in a subsequent stage, and in order to separate the permeated water obtained from the semipermeable membrane element in the previous stage and the permeated water obtained from the remaining subsequent stages, a first permeated water line for taking out, from one end, part of the permeated water obtained from the previous stage, and a second permeated water line for taking out, from the other end, the permeated water from the remaining subsequent stages are provided. The first permeated water line is connected to an energy recovery unit, and back pressure energy is used to boost pressure of part of the feed water with a pressure exchange-type energy recovery unit and/or a turbocharger.

Inventors:
TANIGUCHI MASAHIDE (JP)
TOMIOKA KAZUNORI (JP)
MAEDA TOMOHIRO (JP)
Application Number:
PCT/JP2015/057941
Publication Date:
September 24, 2015
Filing Date:
March 17, 2015
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B01D61/06; C02F1/44; B01D61/10; B01D63/12
Foreign References:
JP2001137672A2001-05-22
JP2013126636A2013-06-27
JP2011115704A2011-06-16
JP2001269543A2001-10-02
Attorney, Agent or Firm:
Eikoh Patent Firm, P. C. et al. (JP)
Patent business corporation glory patent firm (JP)
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