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A MODIFICATION OF THE ACTIVATED SLUDGE PROCESS HAS BEEN DEVELOPED TO ELIMINATE SLUDGE BULKING, MINIMIZE REACTOR VOLUMES, AND ENHANCE NUTRIENT REMOVALS. THE FLOW SHEET UTILIZES TWO SEGMENTS IN SERIES. THE FIRST EMPLOYS A 10 MINUTE MIXED LIQUOR CONTACTOR TO ADSORB 50-60% OF THE SOLUBLE CARBON SUBSTRATE. CONTACTOR MIXED LIQUOR IS FLOTATION SEPARATED AND DISCHARGED TO A SEPARATE AERATION REACTOR FOR M ...

MUNICIPAL WASTE TREATMENT PRODUCES SLUDGES RICH IN COMPLEX ORGANIC CHEMICALS THAT SHOULD BE CONSIDERED AS A CHEMICAL RAW MATERIAL AND RESOURCE ANALOGOUS TO WOOD PULP, AG AGRICULTURAL WASTES, OR PETROLEUM. CURRENT DISPOSAL P PRACTICES OF LANDFILLING, OCEAN DISPOSAL AND EVEN INCINERAR ATION DISREGARD THESE VALUES AND AT BEST RECOVER ENERGY (ANDPOSSIBLY METALS). IT IS PROPOSED TO CARRY OUT SEVERAL CL ...

THE RESEARCH WILL INVESTIGATE THE TECHNICAL, ECONOMIC, AND ENVIRONMENTAL FEASIBILITY OF UTILIZING COMPOSTING AS AN ALTERNATIVE WASTE MANAGEMENT PRACTICE FOR TREATING, DETOXIFYING, AND BIOSTABILIZING ORGANIC CHEMICAL WASTES. SELECTED BIODEGRADABLE HAZARDOUS WASTES WILL BE SUBJECTED TO THE COMPOST PROCESS TO ASCERTAIN THE DEGREE OF DETOXIFICATION AND THE RESPONSIBLE MICROORGANISM. CONCEPTUAL DESIGN ...

THE CHLORINATED ETHENES, VINYL CHLORIDE, VINYLIDINE CHLORIDE, TRICHLOROETHYLENE, AND TETRACHLOROETHYLENE HAVE BEEN DETECTED IN GROUNDWATER THROUGHOUT THE UNITED STATES. VINYL CHLORIDE AND VINYLIDINE CHLORIDE ORIGINATE FROM INDUSTRIAL WASTE DISPOSAL SITES AS WASTE PRODUCTS OF PLASTIC MANUFACTURING AND TRICHLOROETHYLENE IS WIDELY USED AS AN INDUSTRIAL SOLVENT. SINCE THESE COMPOUNDS ARE HIGHLY TOXIC, ...

SAFE TREATMENT AND UTILIZATION OF MUNICIPAL WASTEWATER SLUDGES IS A TOPIC OF SIGNIFICANT CONCERN. THERE IS DEFINITE NEED FOR THE DEVELOPMENT OF A TREATMENT PROCESS WHICH DOES ALL THE FOLLOWING: CONFORMS TO U.S. ENVIRONMENTAL PROTECTION AGENCY REQUIREMENTS FOR A "PROCESS TO FURTHER REDUCE PATHOGENS" ,CREATES A PRODUCT NOT SUBJECT TO REINFECTION., PRODUCES A MATERIAL SUITABLE FOR BENEFICIAL USE., IS ...

PRESENT TECHNOLOGY FOR SOLVENT RECOVERY AND RECYCLE OR FOR THE SOLIDIFICATION OF HAZARDOUS LIQUID ORGANIC WASTE CANNOT BE APPLIED TO ALL WASTE STREAMS. MATERIALS CONTAINING CORROSIVE, HIGHLY REACTIVE, OR ACIDIC COMPONENTS ARE NOT COMPATIBLE WITH THE DISTILLATION/SEPARATION EQUIPMENT OF SOLVENT RECOVERY OPERATIONS. NOR ARE THESE MATERIALS OR THOSE WITH HIGHLY TOXIC AND/OR CORROSIVE VAPOR CONSTITUEN ...

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AN INVESTIGATION OF THE CONCEPT OF A NEW APPROACH TOWARDS A HIGHLY EFFICIENT ELECTROCHEMICAL OZONE GENERATOR IS PROPOSED. THIS APPROACH IS BASED ON THE UTILIZATION OF AN OXYGEN REDUCTION CATHODE INSTEAD OF A HYDROGEN EVOLUTION RESULTING IN A SIGNIFICANT LOWERING OF REQUIRED CELL VOLTAGE. THIS APPROACH ALSO SIGNIFICANTLY SIMPLIFIES THE MASS BALANCE IN THE ELECTROLYZER. AN ENERGY REQUIREMENT OF 7.8K ...