METHOD FOR PURIFICATION OF PETROLEUM-CONTAINING SEWAGE Russian patent published in 1996 - IPC

Abstract RU 2057716 C1

FIELD: treatment of industrial sewage. SUBSTANCE: sewage which contains dispersed petroleum products is purified by air flotation. Flotation agent is added into sewage before its purification is carried out. Alkyl benzyldimethyl ammonium chloride or alkoxymethyl methyldiethyl ammonium methyl sulfate or oxyethylated Mannich base is used as mentioned above flotation agent, their quantities being 0.1-2.5, 0.2-2.0 and 0.2-2.5 mg/l respectively. EFFECT: increases purification degree, decreases expense of flotation agent, improves the method. 2 cl, 1 tbl

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RU 2 057 716 C1

Authors

Rjabov V.G.

Shuverov V.M.

Tokarev V.V.

Uglev N.P.

Degterev N.S.

Krylov V.A.

Dates

1996-04-10—Published

1992-12-10—Filed