Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tatsuya Uejima0
Kiyoshi Izumi0
Shigeto Miuma0
Taichi Uesaka0
Hidetoshi Masutani0
Kazuhisa Nishimori0
Date of Patent
April 26, 2011
0Patent Application Number
118843770
Date Filed
February 27, 2006
0Patent Primary Examiner
Patent abstract
A water treatment system having a biological treatment step (a secondary treatment step) and a membrane separation step (a tertiary treatment step), wherein a portion of the raw water to be treated and/or a portion of the primarily treated water in the pretreatment step are biologically treated and supplied into a reaction tank in the membrane separation step as the main channel system, while the remainder the raw water to be treated and/or the remainder of the primarily treated water in the pretreatment step are added together with a flocculating agent to the reaction tank in the membrane separation step, and then the membrane separation is conducted in the membrane separation step.
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