水環境学会誌
Online ISSN : 1881-3690
Print ISSN : 0916-8958
ISSN-L : 0916-8958
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塩素, オゾン, 紫外線消毒した生活排水の変異原性試験による安全性の評価
竹田 茂稲田 貴嗣伏脇 裕一森 康明
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ジャーナル フリー

2006 年 29 巻 1 号 p. 45-48

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Experiments on disinfection by chlorination, ozonation and ultraviolet-irradiation methods were performed with secondary effluents from domestic wastewater treatment plants, independently. Each treated water sample was evaluated for mutagenicity by the sensitive Ames test. Chlorinated water samples had a high mutagenic activity (the maximum average was 7,120 net rev·l-1 when 50mg·l-1 chlorine was used), depending on chlorine dose. Ozonated water samples and ultraviolet-irradiated water samples showed no or low mutagenicity. Even under good treatment conditions for each method, chlorinated effluents had a strong mutagenicity, but ozonated effluents and ultraviolet-irradiated effluents had a mutagenicity of almost zero.
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© 2006 公益社団法人 日本水環境学会
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