Filtration methods and apparatus

Details Filtration methods and apparatus Filtration methods and apparatus

C - Chemistry, Metallurgy

02

F

182/57

C02F 11/12 (2006.01) B01D 33/10 (1980.01)

Patent

CA 1042358

FILTRATION METHODS AND APPARATUS ABSTRACT OF THE DISCLOSURE Filtration in an internal rotary filter system is improved by externally impacting the filter screen as it rotates with a programmed spray of liquid that is varied from a relatively low to a relatively high pressure. In certain instances, this programmed spray is controlled by an electric timer circuit so arranged that the high pressure spray is on for a period of time which does not too unduly burden the system with fluid, but which is sufficient period of time to prevent slime formation on the screen. This can for instance keep the screen free of slime when no germicidal agent (e.g. Cl2) is employed.

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