| 饮用水中微纳塑料的“胶体泵效应”研究进展 |
| 摘要点击 2607 全文点击 808 投稿时间：2022-10-23 修订日期：2022-12-31 |
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| 中文关键词 微纳塑料 饮用水 胶体泵效应 迁移 去除效果 |
| 英文关键词 micro- and nanoplastics drinking water colloid pump effect migration removal effect |
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| 中文摘要 |
| 微纳塑料是当今备受关注的新兴污染物，已被证实存在于饮用水流经的各个环节.饮用水中的微纳塑料比表面积大，能够吸附无机物、有机物和微生物，增加其对人体健康的风险危害.微纳塑料与典型污染物的吸附、团聚行为被称为"胶体泵效应".聚焦于饮用水中的微纳塑料，从微纳塑料的赋存情况、胶体泵效应、对人体的毒性作用和胶体泵效应对其去除影响这4个方面进行了总结和阐述.结果表明，微纳塑料广泛存在于水源水、出厂水、管网水和龙头水中，其胶体泵效应促进了与无机物、有机物和微生物的团聚，在加剧微纳塑料毒性的同时，也影响其去除效果.混凝沉淀对微纳塑料的去除效果存在争议，传统砂滤对其去除效果有限，深度处理是去除<5 μm微纳塑料的高效处理工艺.探明微纳塑料胶体泵效应的作用机制和引发条件可有效提高其去除率.最后，从饮用水处理工艺和胶体泵效应的角度，对饮用水中微纳塑料的控制进行了展望，以期为降低微纳塑料在饮用水中的赋存及毒性、保障饮用水质安全和人体健康提供借鉴和参考. |
| 英文摘要 |
| Currently, micro- and nanoplastics are the most concerning pollutants, which have been confirmed to exist in every stage of drinking water treatment process. Micro- and nanoplastics in drinking water have large specific surface areas, which could adsorb inorganic matter, organic matter, and microorganisms, thereby increasing their risk to human health. The adsorption and agglomeration behavior of micro- and nanoplastics on typical pollutants is called the "colloid pump effect." Focused on the micro- and nanoplastics in drinking water, the occurrence, colloid pump effect, and toxic effect on the human body and the effect of colloid pumps on the removal of micro- and nanoplastics were summarized and described. The results revealed that micro- and nanoplastics existed widely in source water, treated water, pipe network water, and tap water. The colloid pump effect of micro- and nanoplastics promoted their agglomeration with inorganic matter, organic matter, and microorganisms, which not only intensified the toxic effect of micro- and nanoplastics but also affected the removal effect. There were different viewpoints on the effect of coagulation and sedimentation on the removal of micro- and nanoplastics, and the removal effect of sand filters was limited. The advanced treatment was an efficient process to remove micro- and nanoplastics with a particle size smaller than 5 μm. The removal rate of micro- and nanoplastics could be effectively improved by exploring the mechanism of the colloid pump effect and its initiation conditions. Finally, from the perspective of the drinking water treatment process and colloid pump effect, the control of micro- and nanoplastics in drinking water was prospected in order to provide reference for reducing the occurrence and toxicity of micro- and nanoplastics in drinking water, ensuring drinking water quality safety and human health. |
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