Compositions – Water-softening or purifying or scale-inhibiting agents – Plant or organic material containing
Patent
1982-06-01
1983-11-15
Kittle, John E.
Compositions
Water-softening or purifying or scale-inhibiting agents
Plant or organic material containing
252 86, 252 87, 210698, 210701, 210708, C02F 128, C02F 510, B01J 2012, B01J 2034
Patent
active
044154674
ABSTRACT:
The present invention is directed to a chemical composition for treating contaminated waste waters, particularly waste waters in the form of oily emulsions, to adsorb the contaminants between platelets of activated bentonite and encapsulate or trap the contaminants between the platelets so that the contaminants cannot be leached out into the waste water. The composition includes an acid, such as adipic acid; a coagulant such as aluminum sulfate or ferric sulfate; an activated betonite; lime CaO or Ca(OH).sub.2 ; and bentonite containing at least about 5% by weight calcium aluminum silicate. The invention also is directed to a process for producing the chemical composition, and a method of treating contaminated waste waters with the chemical composition. The composition may include a polymeric flocculating agent, such as polyacrylamide having a molecular weight of at least one million, for flocculation of the encapsulated activated bentonite, or the flocculating agent may be added to the waste water separately, after encapsulation.
REFERENCES:
patent: 3350304 (1967-10-01), Bacon
patent: 3428558 (1969-02-01), Murphy
patent: 3446731 (1969-05-01), Harsh
patent: 3487928 (1970-06-01), Canevari
patent: 4238330 (1980-12-01), Fong et al.
Colloid Piepho
Kittle John E.
Wax Robert A.
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