| 污水氯、二氧化氯消毒处理中水质及毒性变化的比较 |
| 摘要点击 1941 全文点击 1943 投稿时间：2004-09-18 修订日期：2004-12-26 |
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| 中文关键词 污水再生 消毒 氯 二氧化氯 急性毒性 遗传毒性 |
| 英文关键词 wastewater reuse disinfection chlorine chlorine dioxide acute toxicity genotoxicity |
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| 中文摘要 |
| 分别从水质和毒性2方面比较了氯、二氧化氯消毒对污水的影响.结果表明:在水质特性方面,氯消毒对污水色度影响不大,而二氧化氯消毒明显降低了污水的色度;氯、二氧化氯消毒前后污水的DOC基本没有变化;氯消毒后污水的UV230明显增加,二氧化氯消毒后污水的UV230略有降低,当二者投加量均为30mg/L时,氯消毒使污水的UV230增加约0.7cm-1,二氧化氯消毒使污水的UV230降低约0.05cm-1.在毒性生成方面,氯、二氧化氯消毒产生的急性毒性均随消毒剂投加量的增加而增大,氯消毒产生的急性毒性明显高于二氧化氯消毒;氯消毒在一定程度上增大了污水的遗传毒性,而二氧化氯消毒在一定程度上降低了污水的遗传毒性. |
| 英文摘要 |
| The effects of chlorine and chlorine dioxide disinfections on quality and toxicity of wastewater were compared.The experiment results showed that chlorine disinfection had no obvious effect on wastewater color,while chlorine dioxide disinfection decreased wastewater color observably.The DOC of wastewater did not change much after chlorine and chlorine dioxide disinfections.Chlorine disinfection significantly increased UV230 of wastewater and chlorine dioxide disinfection slightly decreased UV230 of wastewater.When the disinfectants dosage was 30mg/L,UV230 increased about 0.7cm-1 after chlorine disinfection and decreased about 0.05cm-1 after chlorine dioxide disinfection.The acute toxicity of wastewater increased with increasing disinfectants dosage for both chlorine and chlorine dioxide disinfections and the acute toxicity after chlorine disinfection is much stronger than that after chlorine dioxide disinfection.The genotoxicity of wastewater increased slightly after chlorine disinfection and decreased slightly after chlorine dioxide disinfection. |
