Chemical Water and Wastewater Treatment III : Proceedings of the 6th Gothenburg Symposium 1994 June 20 – 22, 1994 Gothenburg, Sweden

Exactly ten years ago an experiment was started that proved to be extremely successful: the First Gothenburg Symposium. Its intent was to further the under­ standing of all processes pertaining to Chemical Water and Wastewater Treatment, and to bring together specialists working in basic research as well as in devel­ opment and administration. Now, the Proceedings of the Sixth Symposium are about to be published, clearly proving that there is a need for this forum. They dramatically illustrate the significance and the dynamic development of the topics of these symposia. It is fascinating to witness that in this time of reduced economic growth or even standstill, the environmental drive has not come to a halt, as many anticipated or feared. It is accepted more and more that the protection of the environment, a constant theme in all the Gothenburg Symposia, is not only a topic to be dealt with in times of affluence; it is now also seen as an instrument for cutting ex­ penditure, saving energy, and husbanding resources. The ever growing interest in these Gothenburg Symposia, documented by the large number of contributions the scientific panel received and the large demand for the books of this series that always exceeds the supply, testify to this commitment. Front Matter....Pages I-XI Front Matter....Pages 1-1 Dissolved Air Flotation: Pretreatment and Comparisons to Sedimentation....Pages 3-18 The Use of Factorial Designs to Identify Factors Affecting Particulate Removal in a Full Scale Tertiary Precipitation Plant with Flotation....Pages 19-28 Membrane Microfiltration of Secondary Wastewater Effluent....Pages 29-36 Front Matter....Pages 37-37 Influence of the Basicity of Polyaluminium Chlorides When Cleaning Municipal Wastewater....Pages 39-56 Inorganic Polymer Flocculant Polyferric Chloride, Its Properties, Efficiency and Production....Pages 57-69 Preliminary Evaluation of Polyferric Sulphate As a Coagulant for Surface Water Treatment....Pages 71-93 Stabilized Ferrates (VI): Synthesis Method and Applications....Pages 95-103 Coagulant Dosing Control Using a Model for Wastewater Coagulation....Pages 105-115 Coagulation of Humic Water with Fenton Reagent....Pages 117-129 Front Matter....Pages 131-131 Aspects on Future Drinking Water Treatment in Sweden....Pages 133-136 Coagulation and Corrosion Control for Soft and Coloured Drinking Water....Pages 137-153 Optimal Use of Ozonation and GAC in Direct Filtration for Drinking Water Treatment....Pages 155-171 Combined Design, Operation and Economic Optimization of Contact Filtration....Pages 173-187 Front Matter....Pages 189-189 Chemical Wastewater Treatment — Value for Money....Pages 191-209 The Use of Polymer in the Pre-precipitation Step of a Wastewater Treatment System for Extended Nutrient Removal....Pages 211-219 The Use of Reagents in Up-flow Submerged Biofilters....Pages 221-229 The SIROFLOC Sewage Treatment Process: A High Rate Process for Sewage Clarification....Pages 231-242 Full-Scale Experiences from Biological Nitrogen Removal Combined with Different Phosphorus Removal Alternatives at Öresundsverket in Helsingborg....Pages 243-256 Upgrading Point Loma Treatment Plant in San Diego with Improved Advanced Primary Treatment....Pages 257-268 Industrial Waste Management: The Case of the Tannery Industry....Pages 269-279 Front Matter....Pages 281-281 Characterization and Advanced Treatment of Urban Stormwater from a Separate System....Pages 283-296 Dissolved Air Flotation: Efficient Removal of Micropollutants from Stormwater Runoff....Pages 297-306 High Speed Settling of Stormwater with Microsand....Pages 307-316 Front Matter....Pages 317-317 Chemical Treatment — Consequences for Sludge Biosolids Handling....Pages 319-327 Full Scale Experiences with Thermophilic Aerobic Digestion of Primary-Chemical Sewage Sludge....Pages 329-339 Beneficial Use of Sludge from Sewage Plants and Water Works....Pages 341-352 Phosphate Fixation in Sludges from Enhanced Biological P-Removal During Stabilization....Pages 353-372 Use of Streaming Current and Other Parameters for Polymer Dose Control in Sludge Conditioning....Pages 373-381 The biennial Gothenburg Symposia bring together administrators, engineers and scientists active in research and development of water supply, wastewater and pollution control. This book contains the contributions to the 6th Gothenburg Symposium (Gothenburg, June 1994). 28 contributions by leading experts deal with the question of floc formation and separation, chemicals and dosing control, drinking water treatment, wastewater treatment, stormwater treatment and sludge handling