Betz Laboratories, Inc.

Michael F Mohn

Stephen Robert Vasconcellos

Larry A Lyons

A method for treating the sludge from industrial wastewater streams which contain soluble metals by adding to the sludge an effective amount of a metal complexing agent sufficient to inhibit leaching of the metal from the sludge solids into the environment. The metal complexing agents comprise diethylcarbamate, dimethyldithiocarbamate, and sodium trithiocarbonate or salts thereof.

Method for stabilizing metals in wastewater sludge

A method for treating the sludge from industrial wastewater streams which contain soluble metals by adding to the sludge an effective amount of a metal complexing agent sufficient to inhibit leaching of the metal from the sludge solids into the environment. The metal complexing agent comprises tolyltriazole.

The present invention is directed to a method of detoxifying water containing a cationic surfactant based biocide. The method comprises adding to an aqueous stream including a biocide containing cationic surfactants a sufficient quantity of a combination including clay and a non surface active sulfonate such as a polymerized alkyl naphthalene sulfonate. The combination allows for a high solids detoxification treatment.

Detoxification agents for surfactant based biocides

A method for treating emulsified oil contaminants in the wastewater effluent of industrial and food processing operations. Cationic polymers and silicate ions are found to effectively coagulate the oily particles to facilitate removal from the water.

Silicate coagulant aid for treatment of oily wastewaters

An improved method for removing contaminants from industrial, municipal or food processing wastewater systems comprising generating amorphous precipitated magnesium silicate by separately adding aqueous solutions of magnesium chloride and sodium silicate.

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Levittown, PA, United States of America

Michael F Mohn