Method of treating wastewater laden with fine carbonaceous...

B - Operations – Transporting – 01 – D

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182/15.3

B01D 31/00 (1980.01)

Patent

CA 1170997

TITLE A METHOD OF TREATING WASTEWATER LADEN WITH FINE CARBONACEOUS COAL AND INORGANIC PARTICLES INVENTORS Charles E. Capes Oleh Kutowy William L. Thayer Srininasa Sourirajan ABSTRACT OF THE DISCLOSURE The problem of treating wastewater containing coal tailings with flocculants in a thickener to separate the water is overcome by first reducing the water of the wastewater, then micro-agglomerating carbonaceous coal particles and separating them from the remaining water and inorganic (clay) particles, and then using ultrafiltration to leave a viscous, thickened residue for disposal. The initial thicken- ing may be replaced by a first, ultrafiltration step and the separated water is reusable.

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