Device and a method for filtering a liquid with wood ash to...

Details Device and a method for filtering a liquid with wood ash to... Device and a method for filtering a liquid with wood ash to...

C - Chemistry, Metallurgy

02

F

362/54, 362/63

C02F 1/28 (2006.01) B01D 24/00 (2006.01) B01D 39/02 (2006.01) B01D 39/16 (2006.01)

Patent

CA 1327653

ABSTRACT The liquid from which impurities are to be removed is introduced by being distributed throughout the entire top or bottom surface of the filtering medium. The filtering medium includes at least a bed of wood ash through which the liquid is allowed to flow for removing at least part of its impurities to give a purified liquid. The liquid can flow through the filtering medium either by gravity, under pressure or can be forced upwardly through the filtering medium. This type of filtering medium has proved to be cheaper to build and used and is more efficient than those presently known.

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