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Patent Searching and Data


Title:
WATER TREATMENT SYSTEM, WATER TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2017/175334
Kind Code:
A1
Abstract:
A water treatment system (100) is provided with: a pretreatment device (1) which generates primary treated water by performing a pretreatment on water to be treated; a membrane separation device (2) having a reverse osmosis membrane through which the primary treated water is passed to be separated into concentrated water and permeated water; a first sensor device (3) which is provided between the pretreatment device (1) and the membrane separation device (2) and which detects the presence or absence of occurrence of biofouling caused by the primary treated water; a second sensor device (4) which is provided on a downstream side from the membrane separation device and which detects the presence or absence of scale deposition caused by the concentrated water; and a control device (5) which determines, on the basis of the amount of biofouling and the amount of scale deposition, operation parameters including the pressure and flow rate of the primary treated water being supplied to the membrane separation device (2).

Inventors:
SAKURAI HIDEAKI (JP)
UKAI NOBUYUKI (JP)
SUZUKI HIDEO (JP)
NAKASHOJI HIROSHI (JP)
Application Number:
PCT/JP2016/061259
Publication Date:
October 12, 2017
Filing Date:
April 06, 2016
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
C02F1/44; B01D61/04; B01D61/12; B01D65/08
Foreign References:
JPH09299944A1997-11-25
JP2012130824A2012-07-12
JP2008253953A2008-10-23
JP2014188439A2014-10-06
JPH07284637A1995-10-31
JPH06277665A1994-10-04
JP2011177604A2011-09-15
JP2013193075A2013-09-30
JP2001170458A2001-06-26
Other References:
See also references of EP 3424884A4
Attorney, Agent or Firm:
MORI Ryuichirou et al. (JP)
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