The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2025
Filed:
Oct. 06, 2020
Applicant:
Metawater Co., Ltd., Tokyo, JP;
Inventors:
Hideki Kozono, Tokyo, JP;
Nobuhisa Matsushige, Tokyo, JP;
Assignee:
METAWATER Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 65/02 (2006.01); C02F 1/44 (2023.01);
U.S. Cl.
CPC ...
B01D 65/02 (2013.01); C02F 1/44 (2013.01); B01D 2321/04 (2013.01); B01D 2321/185 (2013.01); C02F 2303/16 (2013.01);
Abstract
A cleaning method of a membrane filtration system in which a plurality of modules including an inlet side region and an outlet side region separated by a filtration membrane are connected in parallel by a common blow header pipe in the inlet side region, the method including backwashing and blowing in which after the backwashing is started, gas is introduced into the plurality of modules through a blow header pipe. The method further includes forming, before the blowing is started, a gas layer across an entire longitudinal direction of the blow header pipe.