METHOD OF CLEANING SURFACE DRAIN FROM SUSPENDED SUBSTANCES AND PETROLEUM DERIVATIVES Russian patent published in 1997 - IPC

Abstract RU 2078049 C1

FIELD: waste water purification. SUBSTANCE: cleaning of surface drain is conducted by way of successive filtration through two mutually immiscible granulated filtration materials, the first (in direction of drain movement) being 2-5-mm fraction of polystyrene foam and the second 0.5-2.5-mm fraction of activated carbon. Invention may be used at enterprises of various destination. EFFECT: improved purification degree and increased duration of filtration process.

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RU 2 078 049 C1

Authors

Evzel'Man I.B.

Kosolapova N.V.

Patrikeev V.S.

Rassokhin A.V.

Matveev S.I.

Dates

1997-04-27—Published

1995-03-24—Filed