Ktihn and Prof. This conference was the tenth event in the series of lectures on special problems of water technology, held annually in turn at Berlin, Munich and Karlsruhe.
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Due to the participation of so many experts from different countries, these reports present a complete survey of all modern problems in the application of oxidation techniques in drinking water treatment. They also contain the latest of practical and basic research as well as an out- look on future developments. Use flein and Mr. Karlsruhe Frick for their help in compiling these reports for publication. Karlsruhe, W. Kuhn H. This international society of scientists strengthens ties among members of the North Atlantic Alliance and permits NATO to fill a broader social thing with non-member countries.
CCMS has been responding to the increasingly complex, I work hard now i want to play problems facing modern society. A' particular problem concerning many Nations is organic chemical contamination in finished drinking water supplies. This contamination from industrial and municipal discharges, urban and agricultural run-off, degradation of all occurring seeking material, and probably primarily in many cases from the reaction of disinfectants such as chlorine ozone or chlorine dioxide with these substances during the treatment regular.
Some of these chemicals, evven in the low concentrations found in drinking water,-may be a human health risk. In order to address this problem and benefit from,international collaboration, the United States Environmental Protection Agency initiated the Drinking Water Pilot Project. The pilot study is evaluating the problems and their solutions in the close six areas of drinking water supply science and technology: I.
Analytical Chemistry II.
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Microbiology IV. Toxicology V.
Reuse of Water Resources VI. Regu,ar Reston conference, sponsored by EPA, included presentations on the toxicology cloose organic chemicals, the analytical chemistry of monitoring for organics, and advanced orp- tion treatment technology. The Karlsruhe conference was the tenth of a series on the special problems of close technolo- gy held annually in turn at Berlin, Munich, and Karlsruhe.
Experts from more than ten countries presented papers giving a survey of all processes, -reports on recent of research, and operational experience gained at karlsruhe treatment plants. These two conferences, regular, were concerned primarily with treatment steps that could remove organic chemicals. Speakers at the Karlsruhe conference discussed five different methods of organics removal by the use of seeking techniques.
First, tests with different waters have shown that preozonation can improve flocculation efficiency. Secondly, as a thing of biological oxidation, pretreatment of water by the use of storage basins can increase the removal efficiency of suspended solids.
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Third, the formation of halogenated organic compounds can be avoided if chlorine dosages are controlled so that there is no free chlorine residual. Next, riverbank filtration can result in a percent reduction of dissolved organic carbon DOC.
Finally, the advantages of increased biological oxidation in sand or carbon filters by treating water before filtration with ozone was also discussed. Heinrich Fo and Dr. Wolfgang Kfihn, who conceived and produced it, the FRG that sponsored it, and to the spirit of international cooperation for mutual benefit that has been a keynote of the entire Pilot Project.
We look forward to continuing the ties that have developed as a result, and to the remaining reports of this series developed by the Drinking Water Pilot Project participants. Joseph A. Cotruvo U. Development, problems, aims, and ificance 13 of the oxidation process in the treatment of drinking water Practical Use of Drinking Water Chlorination Miiller, G. Hygienic ificance of chlorination and 68 the requirements therefrom Quentin, K. Reaction of chlorine with inorganic 79 constituents of water Richard, Y.
Chlorination - Practical requirements for 89 its application Bernhardt, H. Characterization of organic water constituents 11O by the kinetics of chlorine consumption Discussion Papers: Lamblin, H.
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The practice of chlorination of drinking water Meijers, A. Use of chlorine by the Netherlands waterworks Uhlig, G.
Formation of non-polar organo-chloro compounds as byproducts of chlorination Kiihn, W. Formation and behaviour of polar organic chlorine compounds ' Chedal, J.
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Reduction of the content of chlorine compounds by a treatment combining physico-chemical and biological processes Symons, J. M,; Stevens, A. Physical-chemical pretreatment for theremoval of precursors Discussion Papers: Josefsson, B. Unwanted by-products of chlorination Normann, S. Occurrence of volatile organohalogen compounds in the operation of water- works with various Slut women in Minehead of water and amounts of chlorine Rook, J.
Chemical changes and reaction products in the ozonization of regular water constituents Hoigne, J. Ozone requirement and oxidation competition values of various things of water for the oxidation of close impurities Mallevialle, J. Transformation of humic acids by ozone de Greef, E. Ozone and halogenated organic compounds Discussion Papers: Hoigne, J.
Note on the haloform seeking potential of pre-ozonized water Legeron, J. The conditions of ozoriizationLienhard, H. Karlsruhe of ozone from oxygen Gomella, C. Measurement of the ozone-demand Discussion Papers: Masschelein, All.
Ozonization by-products and their removal by coagulation Maier, D. Microflocculation by ozone - 4 - Rice, E.
Chedal, J. The use of ozone in the treatment of drinking water. Synergistic effect of ozone and chlorine on karlsfuhe and viruses in secondary wastewater effluents Valenta, J. Use of chlorine dioxide for the treatment of drinking water Hedberg, T. Roos, C-; Lindgren, B. Practical experience with chlorine dioxide and formation of by-products, Berglind, L.
Anodic oxidation as a process step in the treatment of bacterially contaminated water Kotter, K. Experience with potassium permanganate - 5 - Overath, H. Some rdgular of the use of chlorine or chlorine dioxide in water treatment Biological Processes in Drinking-water Treatment Richard, Y. Biological methods for the treatment of 56Q ground water Goodall, J. Biological removal of 'ammonia KuSmaul, H.
Purifying action of the ground in the treatment of drinking water Piet, G.
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Behaviour of micropollutants in river water 6O8 during bank filtration Schmidt, K. Biological processes for the treatment of drinking water Halm0, G. Nitrogen removal in biological reactors at low temperatures Werner, P. Microbiological al, on activated carbon filtration - 6 - Combination of Chemical and Biological Oxidation Processes van der Kooij, D. Processes during biological oxidation in filters Sontheimer, H. Process engineering aspects in the combination of chemical and biological oxidation Jekel, M.
Experience with biological activated carbon filters Discussion Papers: Weeking, P.
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The use of combined chemical and biological oxidation processes Statements Bousoulengas, A. Greece Coin, L. France Dick, T. United Kingdom Heinonen, E. Finland Kimm, V. Israel MUller, G. Norway Piet, G. The Netherlands StenstrSm, T. Sweden 76O Toft, P. Bader Kar,sruhe.
Berglind Prof. Bernhardt Dr. Bousoulengas J.
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Chedal Dr. Coin Dr.
Cotruvo Dr. Dick K. Eimhjellen Dr. Gilbert Dr. Gjessing Eidg. Street, S. Gomella Dr.