Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR OPERATING DEMINERALIZATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/054689
Kind Code:
A1
Abstract:
The present invention is a method for operating a demineralization apparatus provided with a plurality of demineralizing lines arranged in parallel and having demineralizers, the method comprising passing through some of the demineralizing lines water to be treated to produce demineralized water while passing through another demineralizing line(s) dilute water from a dilute water tank to perform washing of the line(s), and returning water used for said washing back to the dilute water tank, and being characterized by, when the water quality of the dilute water is on the high salts concentration side past a predefined value, discharging part of the dilute water so as to let said part join the water to be treated and providing a new supply of dilute water for replenishment.

More Like This:
JP4724914Dry-wet spinning method Cleaning method for porous hollow fiber membranes
JP4085151How to clean the hollow fiber membrane module
JP6432914Water treatment method and water treatment equipment
Inventors:
ISHII KAZUKI (JP)
HAYAKAWA KUNIHIRO (JP)
TAKAHASHI JUNICHI (JP)
Application Number:
PCT/JP2021/032304
Publication Date:
March 17, 2022
Filing Date:
September 02, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
B01D65/06; C02F1/44
Foreign References:
JP2001187323A2001-07-10
JP2005046801A2005-02-24
JP2005028329A2005-02-03
JP2003181247A2003-07-02
JP2016185520A2016-10-27
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: METHOD FOR OPERATING DESALTING DEVICE

Next Patent: ADSORBENT AND GRANULATED SUBSTANCE