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首页> 外文会议>International Water Association(IWA) Conference; 20050518-20; Xi'an(CN) >Toxicity screening and evaluating on chlorination disinfection of wastewater reclamation processes
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Toxicity screening and evaluating on chlorination disinfection of wastewater reclamation processes

机译：废水再生处理中氯化消毒的毒性筛选与评价

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Reclamation and reuse of wastewater is one of the most effective ways to alleviate the shortage of water resources, while the safety of reclaimed water becomes one of critical problems for protecting human health and ecosystem. Toxicity test can vividly reflect biological effects of chemicals as a whole, in this study, Microtox test was used to screen toxicity changes of wastewater during conventional reclamation processes. The results showed that toxicities of water samples decreased continuously along reclamation processes except chlorination/dechlorination in which the toxicity increased significantly. Furthermore, as for different form of residual chlorine, toxicity of wastewater was quite different with increasing chlorine dosage. NH_3-N had a trend to decrease toxicity of disinfected wastewater, while UV_(254) had a trend to increase toxicity. It was found that there was a good linear relationship between toxicity formation and UV_(254)/NH_3-N ratio for wastewater after disinfection with combined chlorine form before peak-point.
机译：废水的回收和再利用是缓解水资源短缺的最有效方法之一，而再生水的安全性则成为保护人类健康和生态系统的关键问题之一。毒性测试可以生动地反映整个化学品的生物效应，在这项研究中，Microtox测试用于筛选常规回收过程中废水的毒性变化。结果表明，除了氯化/脱氯的毒性显着增加外，水的毒性在开垦过程中不断降低。此外，对于不同形式的残留氯，随着氯用量的增加，废水的毒性也大不相同。 NH_3-N具有降低消毒废水毒性的趋势，而UV_（254）具有提高毒性的趋势。研究发现，用氯组合形式消毒后的废水在峰值点之前，毒性形成与UV_（254）/ NH_3-N比之间存在良好的线性关系。

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