Water treatment system

Details Water treatment system Water treatment system

2011-04-26

2011-04-26

Barry, Chester T (Department: 1776)

Liquid purification or separation

With means to add treating material

Plural distinct separators

C210S205000, C210S295000

Reexamination Certificate

active

07931802

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.

REFERENCES:
patent: 10-156380 (1998-06-01), None
patent: 2000-300968 (2000-10-01), None
patent: 2003-071485 (2003-03-01), None
patent: 2003-170185 (2003-06-01), None
patent: 2004-255268 (2004-09-01), None
patent: 2004-313923 (2004-11-01), None

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