Title:
METHOD FOR DETERMINING CLEANING CONDITIONS OF FILTER
Document Type and Number:
WIPO Patent Application WO/2020/158895
Kind Code:
A1
Abstract:
A method for determining cleaning conditions of a filter, which is utilized for the purpose of cleaning a filter that is used for purification of raw water with use of a cleaning liquid that contains hydrogen peroxide, and which comprises an estimation step that is selected from among a step for estimating the product CT from the difference (P2 – P1) and a step for estimating the difference (P2 – P1) from the product CT, where C is the hydrogen peroxide concentration in the cleaning liquid, T is the cleaning time, P1 is the water permeability before cleaning of the filter, and P2 is the water permeability after cleaning of the filter.
Inventors:
GOJO YUTAKA (JP)
YOSHIDA TAKAHIDE (JP)
YOSHIDA TAKAHIDE (JP)
Application Number:
PCT/JP2020/003540
Publication Date:
August 06, 2020
Filing Date:
January 30, 2020
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
B01D65/06; C02F1/44
Domestic Patent References:
| WO2008120509A1 | 2008-10-09 |
Foreign References:
| JP2011212540A | 2011-10-27 | |||
| JP2017018859A | 2017-01-26 | |||
| JP2008296109A | 2008-12-11 | |||
| JPH06506609A | 1994-07-28 | |||
| US20130060384A1 | 2013-03-07 | |||
| US5198116A | 1993-03-30 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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