Title:
METHOD FOR CONTROLLING SLIME ON SEPARATION MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2016/104356
Kind Code:
A1
Abstract:
Provided is a method for controlling slime on separation membranes, the method being capable of reducing trihalomethane content in permeate while having adequate slime-controlling effects in membrane separation apparatuses that use water supply or rinse water containing trihalomethane precursors. The method for controlling slime on a separation membrane adds, to trihalomethane precursor-containing water supply or rinse water for a membrane separation apparatus with a separation membrane: a bromine oxidizing agent or a reactant of a bromine compound with a chlorine oxidizing agent; a bromine oxidizing agent or a reactant of a bromine compound with a chlorine oxidizing agent, and a sulfamic acid compound; or a reaction product of a bromine oxidizing agent with a sulfamic acid compound, or a reaction product of a sulfamic acid compound with a reactant of a bromine compound with a chlorine oxidizing agent.
Inventors:
YOSHIKAWA HIRO (JP)
SOMEYA SHINTARO (JP)
TSUJI MASATO (JP)
OHMORI CHIHARU (JP)
SOMEYA SHINTARO (JP)
TSUJI MASATO (JP)
OHMORI CHIHARU (JP)
Application Number:
PCT/JP2015/085476
Publication Date:
June 30, 2016
Filing Date:
December 18, 2015
Export Citation:
Assignee:
ORGANO CORP (JP)
International Classes:
C02F1/44; B01D65/06; B01D65/08; B01D71/56; C02F1/50; C02F1/76
Domestic Patent References:
| WO2008090854A1 | 2008-07-31 |
Foreign References:
| JP2004267896A | 2004-09-30 | |||
| JPH11506139A | 1999-06-02 | |||
| JP2002543048A | 2002-12-17 | |||
| JP2002516827A | 2002-06-11 | |||
| JP2005537920A | 2005-12-15 | |||
| JP2003117553A | 2003-04-22 |
Attorney, Agent or Firm:
YKI Patent Attorneys (JP)
Patent business corporation YKI international patent firm (JP)
Patent business corporation YKI international patent firm (JP)
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