Waste Treatment

EditorialAcknowledgmentsIntroductory Some Aspects of the Biochemistry of Aerobic Organic Waste Treatment Compounds which are Metabolized Enzymes Coenzymes and Activators The Concept of Energy in Biological Systems Dehydrogenation and Respiration The Metabolism of Organic Compounds Waste Treatment Conclusions References Some Aspects of the Biochemistry of Anaerobic Digestion Liquefaction and Gasification Practical Aspects of Sludge Digestion Recent Research into the Rate of Sludge Digestion Conclusions References Discussion of First Two Papers Ecology of Activated Sludge and Bacteria Beds Comparison of Activated-Sludge and Bacteria-Bed Environments Activated Sludge Interrelationships of the Different Populations in the Sludge Community and Their Environment Factors Determining the Character and Dominant Organisms of a Sludge Bacteria Beds Organisms of the Film Factors Determining the Accumulation of Film Grazing Fauna Factors Determining the Nature of the Grazing-Fauna Population Factors Influencing the Film-Grazing-Fauna Balance Practical Applications of Ecological Principles to the Design and Operation of Biological Treatment Plants References Discussion The Use of Manometric Methods in the Study of Sewage and Trade Wastes Respirometers Conclusion References DiscussionBiological Treatment Practice New Developments in the Application of Kessener Brushes (Aeration Rotors) in the Activated-Sludge Treatment of Trade-Waste Waters Investigations on the Aeration of Water Research on the Rate of Oxidation in an Activated-Sludge Tank Research on Simplified Sewage Purification for Comparatively Small Amounts of Sewage and Industrial Wastes References Discussion Process Design of Biological Oxidation Systems for Industrial Waste Treatment BOD Removal and Sludge Growth Oxygen Utilization Sludge Production and Oxidation Nutritional Requirements Oxygen Transfer Separation of Solids from Liquids Design Example References Discussion The Application of Recirculation to the Purification of Sewage and Trade Wastes Application to Purification of Sewage-Development of the Process Pseudo-Recirculation The Technique of Applying Recirculation The Mechanism of the Process Application to Purification of Trade Wastes Acknowledgments References Discussion The Treatment of Chemical Wastes Definition of the Problem Principles of Biological Treatment Application of Basic Principles Concentration Limits for Discharge to the River New Biological Treatment Plant The Monsanto Treatment Plant Acknowledgment References Discussion The Treatment of Distillery and Antibiotics Wastes Potable Spirits Industrial Alcohol Antibiotics and Vitamins Summary and Conclusions References DiscussionSampling and Analysis The Relevance of Waste-Water Analysis to the Design of Process and Pretreatment Plant Trade Effluent at Design Stage Effluent from Production Plant Effluent Disposal to River or Sewer Effluent Pretreatment Effluent Analysis Research on Disposal of Trade Effluent Conclusion References Analytical Tests in Relation to the Discharge of Trade Effluents to Sewers Typical Tests and Their Application Pretreatment Required to Render Trade Effluents Acceptable into Sewers Reduction in Volume of Trade Effluent Pr