作　　者： ; ; ; ;

机构地区： 南通大学

出　　处： 《环境工程》 2014年第7期79-84,共6页

摘　　要： 随着水源水微污染问题的日益突出和水质标准的不断提高,传统的水处理技术面临严峻挑战。膜处理是目前饮用水深度处理的有效手段。选择UMU方法对常规工艺的出水及膜处理工艺出水进行遗传毒性评价比较。结果表明:采用正己烷+二氯甲烷+甲醇对水样中的遗传毒性物质进行洗脱效果更为明显;对于常规处理工艺来说,混凝可以部分去除水源水中大分子有机物和非溶解性色度以及部分遗传毒性前体物质;针对不同工艺段的出水,氯化可明显增加水样的遗传毒性;不论消毒与否,仅从遗传毒性指标来看,膜工艺均优于常规工艺出水,但考虑到水样的区域特性,膜法处理是否在遗传毒性指标方面比常规处理更有优势,仍需进一步的资料或数据支持。 Organic compounds existed in drinking water such as POPS /EDCS are commonly considered as the main reason for genotoxicity even at ultra-trace level. The conventional treatment process cannot remove these organic compounds effectively and sometimes results in the rise of the genotoxicity of water. Membrane treatment could achieve satisfactory results on the above compounds. A UMU method to evaluate the genotoxicity of water at different stages of the conventional treatment process was developed and a comparison of the current popular membrane treatment process and the conventional process based on the UMU test was carried out. Moreover,a pre-treatment method was developed according to the water quality characteristics of a water plant in the South. The results showed that chlorination could promote the increase of the genotoxicity in water significantly. Coagulant sedimentation could help reduce the genotoxicity of water through effective removal of the organic compounds. However,taking genotoxicity index into consideration,water after the membrane treatment showed a little advantage compared with that by the conventional process.

关 键 词： 饮用水 遗传毒性 法 超滤 沉淀

领　　域： [建筑科学]