Water reuse method in cleaning device

Details Water reuse method in cleaning device Water reuse method in cleaning device

2011-04-19

2011-04-19

Barry, Chester T (Department: 1776)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C210S683000, C210S690000, C210S691000, C210S692000

Reexamination Certificate

active

07927494

ABSTRACT:
There disclosed a water reuse method in which a surfactant is easily removed from surfactant-including for-treatment water in a cleaning device, whereby water can be reused, and an adsorbent can easily be regenerated only by exposing the adsorbent to an electrolytic solution, and a washing machine including the function. The method includes a surfactant adsorption treatment step of performing a treatment to adsorb and remove a surfactant in surfactant-including for-treatment water such as cleaning water and rinse water used in a washing machine W by hydrotalcite as an anion exchanger or zeolite as a cation exchanger, and a water reuse step of using, in the washing machine W, the for-treatment water treated in the surfactant adsorption treatment step.

REFERENCES:
patent: 2879839 (1959-03-01), Carpenter et al.
patent: 5732362 (1998-03-01), Izumida et al.
patent: 6103100 (2000-08-01), Hart
patent: 05-68965 (1993-03-01), None
patent: 05-212374 (1993-08-01), None
patent: 06-047189 (1994-02-01), None
Chinese Office Action, with English translation, issued in Chinese Patent Application No. 200710199866.X, mailed Jan. 29, 2010.

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