Dr. Gregory D. Boardman Interests: Industrial wastewater treatment, hazardous waste management and environmental toxicology. Dr. John T. Novak Biological treatment studies have been focused on the biodegradation kinetics of hazardous organics. Recently, these studies have been extended to soil and groundwater systems where investigations are underway to determine the natural rate at which contaminant organics biodegrade and to investigate methods for enhancing these rates. Sludge dewatering studies have been directed toward understanding and optimizing the dewatering of sludges by addition of organic polyelectrolytes. Hazardous waste studies are underway to develop a set of guidelines for local governments in the siting of hazardous waste facilities and in dealing with problems of household wastes. Dr. Willliam R. Knocke Residue management studies have emphasized work in the area of sludge characterization and the effect of various conditioning processes (heat treatment, freeze-thaw, inorganic/organic chemicals) on sludge dewatering rates. Past industrial waste management research efforts have been in the area of electroplating waste treatment, including investigations of alternate precipitation techniques, sludge handling concerns, and extraction potentials for metals under ultimate storage conditions. Additional work has been done in areas of textile waste management, coal processing wastewaters, and agricultural feed lot management. Water treatment studies have emphasized the optimization of mixing conditions, selection of proper coagulants, and alternative treatment configurations for improving potable water quality. A significant amount of work has also been performed in the area of trace metal (Fe and Mn) removal. Dr. Clifford W. Randall Recently retired, Dr. Randall’s contributions to the program area remains significant. His main interests are: biological nutrient removal (BNR), industrial and biological wastewater treatment, water supply and waste disposal in developing countries, and watershed management.

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