粪水氯化消毒的致突变性

Potential Risk of the Excreta Sewage after Sterilization with Chlorine

采集经三格粪池初步处理的粪水,测定加氯前后的细菌总数、粪大肠菌数,并进行Ames试验,结果表明加氯消毒效果是理想的,但同时产生了强致突变性。作者认为应对粪水加氯消毒的得失重新全面评价。

Excreta sewage samples were collected from three-compartment septic tanks,Half samples didn't sterilize and others were sterilized by chlorinatiou.Total conforms fecal coliforms and Ames assay were performed as indexes for evaluation the effectiveness of sewage sterilization.The results showed that the chlorination could successfully eleminate the microorganism in sewages,however,an intensive mutagenicty of the sewage induced by chlorination was detected.Thus,we regarded that the benefit and defect of chlorination excreta cewage must review once again.