Title:
METHOD FOR TREATING OIL-CONTAINING DRAINAGE WATER
Document Type and Number:
WIPO Patent Application WO/2022/071153
Kind Code:
A1
Abstract:
In this method for treating oil-containing drainage water, concentrated water is obtained by treating oil-containing drainage water with a reverse osmosis membrane to separate oil and salt in the oil-containing drainage water, and evaporable components in the concentrated water are evaporated to obtain a solid content.
Inventors:
SATO NAGAHISA (JP)
Application Number:
PCT/JP2021/035182
Publication Date:
April 07, 2022
Filing Date:
September 24, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B01D61/02; B01D69/00; B01D69/02; B01D69/10; B01D69/12; B01D71/32; B01D71/34; B01D71/64; C02F1/44
Domestic Patent References:
| WO2014006741A1 | 2014-01-09 | |||
| WO2013153587A1 | 2013-10-17 | |||
| WO2012008015A1 | 2012-01-19 | |||
| WO2012008014A1 | 2012-01-19 | |||
| WO2012008013A1 | 2012-01-19 |
Foreign References:
| JP2014144435A | 2014-08-14 | |||
| JP2014001085A | 2014-01-09 | |||
| CN110877946A | 2020-03-13 | |||
| CN101851046A | 2010-10-06 | |||
| JP2019107645A | 2019-07-04 | |||
| JP6956243B1 | 2021-11-02 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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