Water treatment apparatus and method

Details Water treatment apparatus and method Water treatment apparatus and method

2008-10-22

2009-11-24

Barry, Chester T (Department: 1797)

Liquid purification or separation

Processes

Treatment by living organism

C210S764000, C210S150000, C210S220000, C134S104100

Reexamination Certificate

active

07622042

ABSTRACT:
It is an object of the invention to provide an effective technique for detecting the quality of water with high accuracy. A representative water treatment apparatus includes an aerobic treatment region that treats water aerobically, a downstream region in which the water aerobically treated in the aerobic treatment region flows, a water quality sensor that is submerged in the downstream region and detects the water quality and a sensor washing arrangement that washes the water quality sensor by supplying the water of the downstream region to the water quality sensor at a flow rate higher than water flowing around the water quality sensor. As a result, sludge generated due to aerobic treatment can be prevented from being deposited on the water quality sensor and/or deposited sludge can be removed, so that the accuracy of water quality detection of the water quality sensor can be enhanced.

REFERENCES:
patent: 4307741 (1981-12-01), Rossi
patent: 4517849 (1985-05-01), Nakahori et al.
patent: 6006612 (1999-12-01), Nurse et al.
patent: 6217410 (2001-04-01), Holzapfel et al.
patent: 7300630 (2007-11-01), Cronin et al.
patent: 03052696 (1991-03-01), None

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