Title:
REVERSE OSMOSIS TREATMENT DEVICE AND REVERSE OSMOSIS TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2018/159561
Kind Code:
A1
Abstract:
The present invention provides a reverse osmosis treatment device and a reverse osmosis treatment method with which it is possible to continuously perform a reverse osmosis treatment even during washing of piping accompanying the device. A reverse osmosis treatment device (1) is provided with a membrane unit (100) formed by disposing one or a plurality of reverse osmosis membrane modules. A part of a supply channel for supplying treatment water and/or a discharge channel for discharging concentrated water is configured from a plurality of piping (110, 210) disposed in parallel, each of which has an inlet valve (V11, V21) capable of closing an inlet and an outlet valve (V12, V22) capable of closing an outlet, and in which chemical washing piping (120, 220) capable of supplying chemical washing water is connected to an intermediate part. A reverse osmosis treatment method comprises subjecting treatment water to a reverse osmosis treatment using some of the piping, washing the remaining piping, and continuing the reverse osmosis treatment while alternating the piping used in the reverse osmosis treatment and the piping to be washed.
Inventors:
FUKUZAKI KOJI (JP)
ONISHI MAKOTO (JP)
YOSHIKAWA SHINICHI (JP)
YAMADA SHUJI (JP)
KITAMURA KOTARO (JP)
KONDO YASUTAKA (JP)
ONISHI MAKOTO (JP)
YOSHIKAWA SHINICHI (JP)
YAMADA SHUJI (JP)
KITAMURA KOTARO (JP)
KONDO YASUTAKA (JP)
Application Number:
PCT/JP2018/007048
Publication Date:
September 07, 2018
Filing Date:
February 26, 2018
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
C02F1/44; B01D61/04; B01D61/06; B01D61/58; B01D65/06; C02F1/50
Foreign References:
| JP2014161797A | 2014-09-08 | |||
| JP2007175179A | 2007-07-12 | |||
| US20150076063A1 | 2015-03-19 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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