Inventors:
Michael D. Spence - Farmington Hills MI
John M. Kozaruk - Harper Woods MI
Mark Melvin - Belleville MI
Stephen M. Gardocki - Utica MI
Assignee:
Nalco Chemical Company - Naperville IL
International Classification:
C02F 156
Abstract:
Heavy metals are removed from effluent waters using the sequential steps comprising: A. Adding a surfactant; B. pH adjustment; C. Adding a cationic coagulant; D. Adding a flocculant; and, E. Recovering the floc formed by the flocculant.