典型城市不同来源污水中MPs的分布特征差异  

Distribution and Characteristics of Micro-plastics in Wastewater from Different Sources

作　　者：宣立强 刘硕[1] 万鲁河[1] 罗爻 XUAN Liqiang;LIU Shuo;WAN Luhe;LUO Yao(School of Geography Science,Harbin Normal University,Harbin 150025,China)

机构地区：[1]哈尔滨师范大学地理科学学院,黑龙江哈尔滨150025

出　　处：《环境科学与技术》2022年第6期87-92,共6页Environmental Science & Technology

基　　金：国家自然科学基金项目(41501033);哈尔滨师范大学学术创新重点项目(HSDSSCX2020-02)。

摘　　要：为了对比不同来源污水中微塑料的赋存分布及特征差异,文章选取哈尔滨市2个典型的城市污水处理厂为研究对象开展研究,结果表明:(1)工业废水和生活污水微塑料平均浓度的总去除率分别为86.73%和74.84%,可以看出工业废水的总去除率远远高于生活污水的去除率;(2)工业废水中微塑料的平均浓度为353.26个/L,生活污水中微塑料的平均浓度为290.87个/L,由此结果可得出工业废水进水中微塑料平均浓度含量比生活污水高(为1.21倍);(3)生活污水和工业废水中微塑料的主要形态分别以微珠状(60.24%)和纤维状(48.26%)为主,工业废水和生活废水中微塑料类型均以聚丙烯、聚乙烯为主。该文初步对比了工业废水和生活污水中微塑料在浓度、颜色、形态和主要成分上的差异,为后续研究水环境中微塑料溯源问题奠定了基础。In this study,two typical municipal wastewater treatment plants(one mainly handling industrial wastewater,the other mainly domestic wastewater)in Harbin were selected as a object of study for the investigation of micro-plastics contained in municipal wastewater,which focused on comparative study of the occurrence,distribution and characteristics of micro-plastics in wastewater from different sources.The findings of the study show that the overall removal rates of mean concentration of micro-plastics in industrial wastewater and domestic wastewater were 86.73%and 74.84%,respectively,showing the micro-plastic removal rate of industrial wastewater was much higher than that of domestic wastewater.Mi⁃cro-plastics concentration of industrial wastewater in average was 353.26 grain/L,being higher than that of domestic wastewa⁃ter(290.87 grain/L),about 1.21 times high.As to the morphology of micro-plastics,it was found micro-plastics in domestic wastewater were mainly micro bead(accounting for 60.24%),and in industrial wastewater being mainly fiber(accounting for 48.26%);and as to the types of plastic material,micro-plastics in industrial wastewater were mainly polypropylene,while in domestic wastewater mainly polyethylene.Hopefully,the comparative study could provide a basis for the follow-up sourcetracing study for dealing with the problems of micro-plastics in water environment.

关 键 词：不同来源污水 微塑料 赋存分布 特征差异 污水处理厂 

分 类 号：X703[环境科学与工程—环境工程]