溴氰菊酯作为我国饮用水水质指标的合理性探讨

发布时间：2018-04-20 15:13

本文选题：溴氰菊酯 + 人均暴露量　；参考：《中国给水排水》2017年06期

【摘要】：溴氰菊酯的大量使用可能导致其在环境中的广泛分布,从而最终进入到生活饮用水中。我国现行的106项生活饮用水水质指标中,溴氰菊酯是19种农药指标中的一项。然而,对比国外自来水水质指标,发现美国、日本和加拿大均未将溴氰菊酯作为水质指标。为探明原因,利用污水流行病学的原理,估算了北京地区溴氰菊酯的人均暴露量。结果表明,北京地区的人均溴氰菊酯暴露量为美国加利福尼亚州的8倍,间接反映了我国大量使用溴氰菊酯的事实。溴氰菊酯在污水处理系统中的去除性能极好,其主要去除机理为污泥吸附和生物降解,但前者的贡献更大。由于溴氰菊酯的高疏水性,经城市污水处理系统或者农业地区的直接使用而进入到环境地表水体的溴氰菊酯含量极少。因此,完全没有必要将溴氰菊酯列入到我国饮用水水质指标体系中。
[Abstract]:The extensive use of deltamethrin may lead to widespread distribution of deltamethrin in the environment and eventually into drinking water. Deltamethrin is one of the 19 pesticide indexes of 106 domestic drinking water quality indexes. However, compared with foreign tap water quality indexes, deltamethrin is not used as a water quality index in the United States, Japan and Canada. In order to find out the cause, the per capita exposure of deltamethrin in Beijing was estimated by using the principle of sewage epidemiology. The results show that the per capita exposure of deltamethrin in Beijing is 8 times higher than that in California, which indirectly reflects the fact that deltamethrin is widely used in China. The removal performance of deltamethrin in wastewater treatment system is excellent. The main removal mechanism of deltamethrin is sludge adsorption and biodegradation, but the former contributes more. Because of the high hydrophobicity of deltamethrin, the content of deltamethrin entering the environmental surface water body is very low through the direct use of urban sewage treatment system or agricultural area. Therefore, it is not necessary to include deltamethrin in our drinking water quality index system.
【作者单位】：华南理工大学环境与能源学院;华南理工大学工业聚集区污染控制与生态修复教育部重点实验室;华南理工大学污染控制与生态修复广东省普通高等学校重点实验室;广东粤海水务有限公司;
【基金】：国家自然科学基金资助项目(21577040、21107025) 广东省公益研究与能力研究项目(2015M020215003) 广州市科技计划项目(2563000191) 广东粤海水务有限公司水体异味项目(D8144320)
【分类号】：R123.1

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