초록 ▼

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

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)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.

대표청구항 ▼

A chemical composition for the treatment of contaminated waste waters, especially waste waters in the form of oily emulsions, the agent comprising activated bentonite; bentonite containing calcium aluminum silicate in an amount of at least 30% based on the dry weight of activated bentonite; lime (Ca

A chemical composition for the treatment of contaminated waste waters, especially waste waters in the form of oily emulsions, the agent comprising activated bentonite; bentonite containing calcium aluminum silicate in an amount of at least 30% based on the dry weight of activated bentonite; lime (CaO or Ca(OH)2 in an amount of at least 50% based on the dry weight of bentonite containing calcium aluminum silicate; a contaminant coagulant; and an acid or acid salt.