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:
Aug. 02, 2022
Filed:
Apr. 12, 2018
Applicant:
Ishigaki Company Limited, Tokyo, JP;
Inventors:
Manabu Yamashita, Kagawa, JP;
Masakazu Morita, Kagawa, JP;
Hiroyuki Mino, Kagawa, JP;
Yasuaki Nishihara, Kagawa, JP;
Atsushi Yanai, Kagawa, JP;
Ryosuke Tamauchi, Kagawa, JP;
Yasutaka Suetsugu, Kagawa, JP;
Masayoshi Katayama, Kagawa, JP;
Assignee:
ISHIGAKI COMPANY LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 11/14 (2019.01); C02F 11/147 (2019.01); C02F 11/121 (2019.01); B01D 21/24 (2006.01); B01D 21/26 (2006.01); C02F 11/125 (2019.01); C02F 11/02 (2006.01); C02F 1/00 (2006.01); C02F 3/12 (2006.01); C02F 11/04 (2006.01); C02F 11/123 (2019.01);
U.S. Cl.
CPC ...
C02F 11/147 (2019.01); B01D 21/2488 (2013.01); B01D 21/262 (2013.01); C02F 11/02 (2013.01); C02F 11/121 (2013.01); C02F 11/125 (2013.01); C02F 1/008 (2013.01); C02F 3/1257 (2013.01); C02F 3/1268 (2013.01); C02F 11/04 (2013.01); C02F 11/123 (2013.01); C02F 2209/001 (2013.01); C02F 2209/10 (2013.01); C02F 2209/42 (2013.01); C02F 2303/18 (2013.01); C02F 2303/26 (2013.01); Y02W 10/10 (2015.05);
Abstract
A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.