Chemical Water and Wastewater Treatment IV : Proceedings of the 7th Gothenburg Symposium 1996, September 23 – 25, 1996, Edinburgh, Scotland

Front Matter....Pages I-XII Front Matter....Pages 1-1 Mixing for Coagulation: Organic Polymers, Static Mixers, and Modeling....Pages 3-15 The Relevance of Blanket Solids Concentration in Understanding the Performance of Floc Blanket Clarifiers in Water Treatment....Pages 17-29 Temperature Influences and Structure in the Sweep Floc Domain....Pages 31-40 Floc Size Distribution Measurements: A Physically Sound Method for Scaling Up Flocculation Performance....Pages 41-48 Water and Wastewater Treatment Using Ferrites....Pages 49-60 On-line Evaluation of Shape and Porosity Effects on Settling Behaviour of Flocs in Clarifiers....Pages 61-70 Front Matter....Pages 71-71 European Standards for Drinking Water Treatment Chemicals....Pages 73-81 The Differences of Behaviour and Coagulating Mechanism Between Inorganic Polymer Flocculants and Traditional Coagulants....Pages 83-93 The Influence of pH When Precipitating Orthophosphate with Aluminum and Iron Salts....Pages 95-105 Coagulation and Precipitation by an Alkaline Aluminium Coagulant....Pages 107-117 Front Matter....Pages 119-119 Colloid Charge Capacity — Its Measurement, Problems and Promise....Pages 121-135 Dosing Control of Coagulants Based on On-line Monitoring of Suspended Solids in Sewage Treatment Plants....Pages 137-145 Chemicals Addition Control for Phosphorus Removal in Primary Sedimentation Tanks....Pages 147-158 Primary Treatment for Urban Wastewater Treatment — Directive Compliance....Pages 159-170 Front Matter....Pages 171-171 Removal of Humic Substances by Coagulation....Pages 173-187 Coagulation of Natural Organic Matter from Surface Water Using Cationic Polymer....Pages 189-199 High Rate Flocculation, Flotation and Filtration in Potable Water Treatment....Pages 201-211 Contact Flocculation Filtration Using a Natural Polyelectrolyte for the Treatment of Low Turbidity Surface Water in Developing Countries....Pages 213-223 Front Matter....Pages 225-225 Aspects on Upgrading of Existing Treatment Plants....Pages 227-240 Meeting the EC Urban Wastewater Treatment Directive with the Hydro Swirl-Flo® Process....Pages 241-250 Front Matter....Pages 225-225 Chemically Assisted Sedimentation in an Inclined Tube Clarifier....Pages 251-262 Long Term Dosage of Aluminium in a Full Scale WWTP to Improve Activated Sludge Settleability....Pages 263-273 Front Matter....Pages 275-275 Innovative Physico-Chemical Wastewater Treatment Research Down-Under....Pages 277-286 Anoxic Degradation of Dissolved COD for Enhanced Organic Matter Removal in Compact Chemical Treatment Plants....Pages 287-297 Removal of Amorphous Components in a Fluidized Bed Type Crystallize....Pages 299-306 Dairy Wastewater Treatment by Coagulation with Chitosan....Pages 307-314 Front Matter....Pages 315-315 The Relative Merits of Biological Versus Chemical Wastewater Treatment....Pages 317-318 Statements for the Panel Discussion....Pages 319-321 Can We Find Methods to Select a Wastewater Treatment Process by as Clear as Possible a ‘Holistic Approach’?....Pages 323-326 Biological Treatment Versus Chemical Treatment....Pages 327-328 Economic and Ecological Aspects of Wastewater Treatment with Biological and Chemical Means....Pages 329-331 Economic and Ecological Aspects of Wastewater Treatment with Biological and Chemical Means....Pages 333-335 Front Matter....Pages 337-337 Wastewater Treatment and Resources Reuse Based on Pre-Precipitation, Biofilm Reactors and Thermal Sludge Hydrolysis....Pages 339-351 Consequences of Phosphorus Elimination for Sludge Production — a Comparison between Physical-Chemical and Enhanced Biological Phosphorus Removal....Pages 353-366 Don’t Reject the Idea of Treating Reject Water....Pages 367-375 Full Scale Experiences with Processes for Stabilization and Disinfection of Primary-Chemical Sludge....Pages 377-390 Thermal Sludge Treatment to Decrease Sludge Volume and Recycle the Sludge to New Products....Pages 391-399 Thermal Hydrolysis as a Profitable Way of Handling Sludge....Pages 401-409 The Use of Hypertext for the Optimization of Precipitation in Municipal Wastewater Treatment Plants....Pages 411-421 Back Matter....Pages 423-424 This seventh symposium in the series of biennial Gothenburg Symposia, taking place in Edingburgh 1996 continues to bring together research scientists, designing and operating engineers and funding and supervising administrators. It also has enlarged the scope of its platform by bringing together concerned specialists from Western countries and Central and Eastern Europe and furthermore attempts to bridge the gap between developing and industrialized countries. The traditionally presented topics, such as treatment of potable water and wastwater predominantly by chemical means are of utmost importance for those that need immediate action at reasonable costs. It is particularly noteworthy that an increasing number of contributions address these problems of the emerging need for environmental protection. And more and more presentations are delivered by experts from Central and Eastern Europe and from developing countries. Again the proceedings of this seventh symposium indicate and demonstrate new developments that advance the field of water and wastewater treatment. Be­ sides the ever present topics there is now a whole section on automation and control, a highly significant topic for water technology that so far has not received too much attention in symposia of this kind addressing theoreticians and prac­ titioners at the same time. This 7th symposium in the series of biennial Gothenburg Symposia continues to bring together research scientists, designing and operating engineers and funding and supervising administrators. It also has enlarged the scope of its platform comprising specialsists from Western countries and Central and Eastern Europe and furthermore attempting to bridge the gap between developing and industrialized countries. This book contains the contributions to the 7th Gothenburg Symposium (Edinburgh, September 1996). Contributions by leading experts deal with the question of floc formation and separation, chemicals, automation and control, drinking water treatment, wastewater treatment, innovative processes in wastewater treatment, combined processes and resources reuse. The emerging need for environmental protection while using chemicals for the immediate treatment of potable water and wastewater is addressed in more and more papers... This 7th symposium in the series of biennial Gothenburg Symposia continues to bring together research scientists, designing and operating engineers and funding and supervising administrators. It also has enlarged the scope of its platform comprising specialsists from Western countries and Central and Eastern Europe and furthermore attempting to bridge the gap between developing and industrialized countries. This book contains the contributions to the 7th Gothenburg Symposium (Edinburgh, September 1996). Contributions by leading experts deal with the question of floc formation and separation, chemicals, automation and control, drinking water treatment, wastewater treatment, innovative processes in wastewater treatment, combined processes and resources reuse. The emerging need for environmental protection while using chemicals for the immediate treatment of potable water and wastewater is addressed in more and more papers ..