| 摘要: |
| 微塑料(MPs)作为一种普遍存在的新污染物而受到关注,工业来源被认为是受纳河流和邻近海域中微塑料的重要来源,但是关于工业来源废水中的微塑料污染情况并不明确。本文系统研究了沿海五个行业代表性企业进水和出水中微塑料的赋存特征,结果表明,由于工厂内部污水处理系统的低处理效率,效率范围为26.24%~85.18%,沿海工业废水源释放了大量微塑料,是近海环境中微塑料污染的重要来源。不同工业中纺织印染业产生的污水微塑料含量最大,平均进水浓度84.75 pieces/L,纸塑制造厂、化工厂和船舶工业污水中微塑料丰度相近,在32.00 pieces/L到 37.24 pieces/L之间,金矿厂污水中微塑料丰度最低,为23.92 pieces/L,不同行业来源进水中微塑料在形状和成分上相似,纤维是主导特征,比例范围为57.66%~99.27%,聚乙烯(PE)、聚对苯二甲酸乙二醇酯(PET)是主要成分,比例范围为39.09%~100.00%,在尺寸和颜色上存在行业差异,工业出水中微塑料特征与海洋中微塑料特征高度契合,再次证明了工业污水对海洋微塑料污染的重要贡献。本研究通过揭示典型海湾周边代表性行业工业污水微塑料浓度与特征,为海洋微塑料的源汇特征、迁移与防控研究提供科学依据。 |
| 关键词: 沿海 微塑料 工业废水 赋存特征 |
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| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目），中国科学院国际合作伙伴计划对外合作重点项目，中国科学院国际大科学计划培育项目，中科院战略性先导科技专项 |
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| Fugitive characteristics of microplastics in different coastal industrial wastewater sources |
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LI Xiao-ya1, Liu Juan1, Zheng Shan2, Liang Jun-hua2, Zhu Ming-liang2, LI Qing-jie2, Sun Xiao-xia2
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1.Qingdao University Of Science and Technology;2.Institute of Oceanology,Chinese Academy of Sciences
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| Abstract: |
| Microplastics (MPs) have gained attention as a widespread new pollutant, and industrial sources are considered to be an important source of microplastics in receiving rivers and adjacent marine waters, but there is no clarity regarding microplastic pollution in industrial source wastewater. In this study, the fugitive characteristics of microplastics in the influent and effluent of five coastal industries were systematically investigated, and the results showed that the five industries would generate 159.511 billion microplastics per year and release 46.155 billion microplastics per year due to the low treatment efficiency of the industrial internal wastewater treatment systems, and the coastal industrial wastewater sources are an important source of microplastic pollution in the offshore environment. The textile printing and dyeing industry produced the largest amount of microplastics in different industries with an average influent concentration of 84.75 pieces/L. The abundance of microplastics in the effluent from paper and plastic manufacturing plants, chemical plants and marine industries was similar, ranging from 32.00 pieces/L to 37.24 pieces/L. The lowest abundance of microplastics in the effluent from gold mining plants was 23.92 pieces/L. Different The microplastics in the effluent from different industrial sources were similar in shape and composition, fiber was the dominant feature, polyethylene (PE) and polyethylene terephthalate (PET) were the main components, and there were industrial differences in size and color. The characteristics of microplastics in industrial effluent were highly compatible with those in the ocean, which again proved the important contribution of industrial effluent to marine microplastic pollution. By revealing the concentration and characteristics of microplastics in industrial effluents from representative industries around typical bays, this study provides a scientific basis for research on the source-sink characteristics, migration and prevention and control of marine microplastics. |
| Key words: coastal microplastics industrial wastewater fugacity characteristic |