Trihalomethane formation during water disinfection in four water supplies in the Somes river basin in Romania |
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Authors: | Dumitru Ristoiu Urs von Gunten Aurel Mocan Romeo Chira Barbara Siegfried Melinda Haydee Kovacs and Sidonia Vancea |
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Institution: | (1) Faculty of Environmental Science, University Babes-Bolyai Cluj-Napoca, P-ta Stefan cel Mare 4, 400084 Cluj-Napoca, Romania;(2) Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dubendorf, Switzerland;(3) Institute of Public Health Cluj-Napoca, 400349 Cluj-Napoca, Romania;(4) Water and Sewerage Company Cluj, Bulevardul 21 Decembrie 1989 nr.79, 400604 Cluj-Napoca, Romania;(5) Garda de mediu, Comisariatul Judeţean Cluj, str.G-ral T. Mosoiu nr.49, 400609 Cluj-Napoca, Romania |
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Abstract: | Background, aim and scope After the discovery of chloroform in drinking water, an extensive amount of work has been dedicated to the factors influencing
the formation of halogenated disinfections by-products (DBPs). The disinfection practice can vary significantly from one country
to another. Whereas no disinfectant is added to many water supplies in Switzerland or no disinfectant residual is maintained
in the distribution system, high disinfectant doses are applied together with high residual concentrations in the distribution
system in other countries such as the USA or some southern European countries and Romania. In the present study, several treatment
plants in the Somes river basin in Romania were investigated with regard to chlorine practice and DBP formation (trihalomethanes
(THMs)). Laboratory kinetic studies were also performed to investigate whether there is a relationship between raw water dissolved
organic matter, residual chlorine, water temperature and THM formation. |
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