Formation of mutagenic activity during surface water preozonization and its removal in drinking water treatment |
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| Authors: | F Van Hoof JG Janssens H Van Dijck |
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| Institution: | Study Syndicate for Water c/o Antwerpse Waterwerken Mechelsesteenweg 64 2018 Antwerp - Belgium |
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| Abstract: | The influence of preozonization, coagulation and double layer filtration on formation and removal of mutagenic activity was studied using XAD-8 extracts collected from neutral and acidic solutions and assaying them in the Salmonella typhimurium microsomal assay.Preozonization of surface water produced direct acting frame shift mutagens which were adsorbed on XAD-8 from neutral solutions. This phenomenon was shown to be dependent on the ozone dose applied. Coagulation with different chemicals and subsequent direct filtration partially reduced the mutagenic activity. |
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