Nalco Chemical Company

Calgon Corporation

Michael P Flaherty

Denis E Hassick

Robert J Guerrini

Pamela J Dotter

A coagulant which is the reaction product of a trivalent metal salt, excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effectively used to remove suspended solids and various impurities in most water treatment applications.

Inorganic composition, process of preparation and method of use

A coagulant which is the reaction product of a trivalent metal salt (eg., FeCl,), excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effectively used to remove suspended solids and various impurities in most water treatment applications.

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Imperial, PA, United States of America

Michael P Flaherty