城市污水处理厂再生水自然净化中诱变活性变化的观察

应用Ａｍｅｓ实验对污水处理厂再生水在自然净化中有机诱变物活性变化进行了检测。结果表明，在自然净化过程中，不同净化时间均有明显的诱变活性，无衰变迹象，饮用水系则无变诱活性，再生水多用于改善景观，园林灌溉和道路喷洒，不与人群直接接触，故认为再生水的诱变活性可不考虑用作卫生评价指标。

Observation of Mutagenic Activity Change in Natural Purification for Reclaimed Water from Sewage Treatment Plant

Mutagenic activity change in natural purification for reclaimed water form sewage treatment plant were determined using Anes test.the results sgowed that reclaimed water has dislinct mutagenic activlty during different natural purification phase and dose not decline sign. No mutagenic activity were detected in drinking water system.The reclamed water is used for improving landscapes irrigating gardens and spraying roads frequently,it do not contact population directly.So we consider that mutagenic activity may be disregaded for health evaluation target of reclaimed warter.