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:
Sep. 06, 2011
Filed:
Mar. 04, 2008
Dabide Yamaguchi, Yokosuka, JP;
Yoshiharu Tanaka, Kokubunji, JP;
Tokio Ohto, Yokosuka, JP;
Takashi Nakayama, Ibaraki, JP;
Dabide Yamaguchi, Yokosuka, JP;
Yoshiharu Tanaka, Kokubunji, JP;
Tokio Ohto, Yokosuka, JP;
Takashi Nakayama, Ibaraki, JP;
Metawater Co., Ltd., Tokyo, JP;
Abstract
Provided are a method and an apparatus that enable rapid and automatic determination of the coagulant injection rate in a process of water treatment through coagulation and sedimentation. Using a coagulation analyzer comprising sample tanksA toD each for keeping a predetermined amount of raw water, a water supply pump, water supply/discharge valvesfor raw water and washing water, mixersA toD, a coagulant injection unit, and a detectorfor determining the particle size and the particle number of flocs, the time within which the coagulantinjected into the sample tanks is dispersed by mixing and the particles begin to agglomerate (agglomeration start time) is determined, and based on the thus-determined agglomeration start time, the coagulant injection rate is determined, or the amount of the coagulant to be injected is controlled.