PROCESS FOR PREPARING COAGULANT Russian patent published in 1994 - IPC

Abstract RU 2019520 C1

FIELD: purification of waste water. SUBSTANCE: natural alumosilicate having a silicon oxide to aluminium oxide ratio of 3.9-4.16 is treated with sulfuric acid having a concentration of 5-20%, the alumosilicate to sulfuric acid ratio being 0.07-0.25, and the entire process is carried out at 18-45 C. EFFECT: improved process. 1 dwg

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RU 2 019 520 C1

Authors

Рonomarenko О.V.

Рapernov I.М.

Dates

1994-09-15—Published

1991-06-05—Filed