Water purification system and method for efficiently and reliabl

Details Water purification system and method for efficiently and reliabl Water purification system and method for efficiently and reliabl

1997-10-27

2000-11-21

Smith, Duane

Liquid purification or separation

Processes

Separating

210266, 210269, 210315, 210335, 210342, B01D 2958, B01D 2962, B01D 3518

Patent

active

061498262

ABSTRACT:
In a water purification system in which a first filter (20) is placed in a flow of raw water for filtering the raw water to produce filtered water, a second filter (27) is placed downstream of the first filter for filtering the filtered water. The first filter is conductive and has a plurality of water passages through which the raw water flows. Each of the water passages of the first filter has a first diameter. At intervals, an electric voltage is applied to the first filter to destroy bacteria which is captured by the first filter. The second filter has a plurality of water passages through which the filtered water flows. Each of the water passages of the second filter has a second diameter smaller than the first diameter.

REFERENCES:
patent: 4647375 (1987-03-01), Czeller et al.
patent: 5071551 (1991-12-01), Muramatsu et al.
patent: 5160038 (1992-11-01), Harada et al.
patent: 5750026 (1998-05-01), Gadkaree et al.

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