Water Pollution Research and Development

Part 1

Editorial

Assessing Flotation Behaviour of Different Types of Sewage Suspensions

Predicting Oxygen and Nitrogen Absorption Rates from Submerged Suspensions of Gas Bubbles

Applications of the Bubble Fractionation to Water and Wastewater Treatment

A General Model for the Activated Sludge Process

The Effect of Particulate Organic Material on Activated Sludge Yield and Oxygen Requirement

The Role of Filamentous Microorganisms in Activated Sludge Settling

Evaluation of Operational Benefits to the Activated Sludge Process Using Step Feed Control Strategies

Industrial Waste Carbon Sources for Biological Denitrification

Kinetic Model of Biological Denitrification in a Fluidized Bed Biofilm Reactor (FBBR)

Kinetics of Biological Fluidized Bed Wastewater Denitrification

Denitrification of Water for Human Consumption

Biological Nitrogen Removal by Step-Feed Process

Continuous Bioregeneration of Granular Activated Carbon During the Anaerobic Degradation of Catechol

Bayer Tower Biology—An Efficient, Low Noise and Odorfree Process for Biological Wastewater Treatment

Nitrification Kinetics in a Rotating Biological Disk Reactor

Practical Problems Related to Nitrogen Bubble Formation in Fixed Film Reactors

Design of Fixed-Film Processes with Steady-State-Biofilm Model

A General Equilibrium Model for the Precipitation of Phosphate with Iron and Aluminium

Non-Biological Elimination Mechanisms in a Biological Sewage Treatment Plant

Optimal Advanced Treatment and Phosphorus Removal by Deep Bed Filtration

A Comparative Study of Various Congulants for the Renovation of Secondary Effluents

Lime Treatment of Wastewater: Development and Application of a Simple Graphical Technique for Predicting the Chemical Composition of Lime-Treated Secondary Effluent

Physico-Chemical Treatment of Wastewater—Control of Reagent Additions by Pollution Load to be Treated

Flocculation of Waste Emulsions Using Polyelectrolytes

Part 2

The Use of Flow Contractions to Improve Clarifier Performance

Pilot Performance of Deep U-Tubes

Performance of Finned Channel Separator

Some Factors Involved in the Occurrence and Limitation of Algal Blooms in an Australian Estuary

Application of Ecological Dynamics for Eutrophication Control in Kobe Harbour Area

Long-Term Changes in Benthic Fauna Resulting from Sewage Sludge Dumping into the North Sea

Variability of Bacterial Counts in Coastal Waters

The Role of Bottom Deposits in the Oxygen Regime of a Polluted Estuary

Investigations into Sewage Grease Behaviour in Coastal Waters

Movement of Mercury from Minamata Bay into Yatsushiro Sea

Development and Application of a Technique for the Determination of the Molecular Mass Distribution of Organic Compounds in Water

The Fate of Organic Micropollutants Through an Integrated Wastewater Treatment/Water Reclamation System

Reactions of Ozone with Aromatics in Dilute Aqueous Solution: Reactivity and Biodegradability of Oxidation Products

Removal of Mutagenic Compounds in a Wastewater Reclamation System Evaluated by Means of the Ames Salmonella/Microsome Assay

An Appraisal of Bacterial Indicators of Pollution in Sea Water

Study of Partially Neutralized Aqueous Aluminium Chloride Solutions: Identification of Aluminium Species and Relation Between the Composition of the Solutions and their Efficiency as a Coagulant

Evolution of Organic and Mineral Pollutants in Surface Water Under the Effect of Lagooning

Activated Carbon Processes for Treatment of Chromium (VI)- Containing Industrial Wastewaters

The Removal of Nitrogen from an Inorganic Industrial Effluent by means of Intensive Algal Culture

Biological Nitrogen Control of Coke Plant Wastewaters

Adsorption and Ion Exchange Processes for Treatment of White Water and Waste Water of Paper Mills

Inorganic Mercury-Bituminous Coal Sorption Interaction in Water

Water Quality Changes and Clearing Requirements for Impoundments in Arctic and Subarctic Regions

Heavy Metals in the Ruhr River and their Budget in the Catchment Area

Part 3

Transport of Heat and Nutrients Across a Thermocline

The Impact of Sewers on the Nutrient Budget of Lake George, N. Y.

Nonpoint Source Quantification and its Role in Lake and Stream Water Quality Planning

Evaluation of Acid-Fast Bacteria, Candida Albicans, Enteric Viruses and Conventional Indicators for Monitoring Wastewater Reclamation Systems

Inactivation of Enteroviruses by Ozone

Study of a Pour Plate Technique for the Enumeration of Coliform Organisms in Surface Water

Efficiency of Ultrafiltration for the Isolation of Enteric Viruses and Coliphages from Large Volumes of Water in Studies on Wastewater Reclamation

The Chemical Control of the Water Hyacinth (Eichhornia Crassipes (Mart.) Solms)

The Stimulation of Autotrophic Production by Urban Stormwater-Borne Nutrients

The Sensitivity to Phosphorus and Nitrogen Loads, of Lake Rotorua, New Zealand

Lysimeter and Field Studies on Land Application of Wastewater Sludges

Operation and Design of Biological Leachate Treatment Plants

Treatment Effects and Pollution Dangers of Secondary Effluent Percolation to Groundwater

Nitrogen Removal in a Subsurface Disposal System

The Response of Methane Fermentation to Cyanide and Chloroform

Least-Cost Optimization for Areawide (208) Wastewater Management Using Mixed Integer Programming

The Use of Multidimensional Analysis in the Comparison of the 1976 vs 1971 River Seine basin Surveys

Combating River Pollution Taking the Rhine as an Example

The Application of the Biocenotic Model for the Prediction of the Effects of an Impoundment of Flowing Water

Urban Runoff Quality in Finland and its Dependence on some Hydrological Parameters

Part 4

Workshop 1: The Ecological and Health Significance of Heavy Metals in the Aquatic Environment

Cadmium and Marine Invertebrates

Heavy Metals in Sewage Sludge—A Major Topic of Joint European Research

Workshop Discussions

Workshop 2: Odour, Airborne Contaminants and Aerosols from Wastewater Collection and Treatment

Health Aspects of Wastewater Aerosols

Odours from Sewers and Sewage Treatment Works

An Approach to the Study of Environmental Microbial Aerosols

Workshop Discussions

Workshop 3: Groundwater Contaminants from Land Disposal of Residues

Groundwater Contaminants from Land Disposal of Residues and Agricultural Practices

Groundwater Contaminants from Land Disposal of Residues: A Survey in the Province of Antwerp, Belgium

The Modelling of Contaminant Migration from Sanitary Landfills

The Distribution and Movement of Solutes Derived from Agricultural Land in the Principal Aquifers of the United Kingdom, with Particular Reference to Nitrate

Movement of PCB's and Other Persistent Compounds Through Soil

Contents

Discussions and Replies

Subject Index Parts 1 - 4

Addendum

Errata