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

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

1989-05-10

1992-04-28

Hruskoci, Peter

Liquid purification or separation

Processes

Ion exchange or selective sorption

210669, 210688, 210691, 210715, 210724, 210807, 210283, 210912, 210913, C02F 128

Patent

active

051086140

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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