摘要
调查了位于黄河上游给水厂中＞1μm的微塑料的丰度、物理形貌和组成,结果显示原水、混凝沉淀、过滤、紫外消毒和终端出水中微塑料的丰度分别为(1964.5±212.5)个几、(795±136)个/L、(386±21)个/L、(377±20)个/L和(374.5±13.5)个几,总体去除率达到80.97％.从原水到终端出水中微塑料以＜10μm(89.60％～100％)的碎片状为主,且其去除效率与形状和大小有关.通过激光红外成像光谱仪和拉曼光谱进行定性分析发现了 15种不同的聚合物类型,聚对苯二甲酸乙二醇酯、聚丙烯、聚乙烯及聚甲基丙烯酸甲酯最为常见.该研究结果为城市供水中存在微塑料提供了依据,并为给水处理过程中微塑料的去除提供参考.
Abstract
The abundance,physical morphology,and composition of microplastics＞1 μm in a water supply plant were investigated in the upper reaches of the Yellow River.The results showed that the abundance of microplastics in the raw water,coagulation and sedimentation,filtration,UV disinfection and terminal effluent were(1964.5±212.5)microplastics/L,(795±136)microplastics/L,(386±21)microplastics/L,(377±20)microplastics/L,and(374.5+13.5)microplastics/L,with an overall removal rate of 80.97％.Microplastics from raw water to terminal effluent were predominantly in the form of fragments of＜10 μm(89.60％～100％),and their removal efficiency was related to shape and size.15 different polymer types were identified by laser direct infrared spectrometry and Raman spectroscopy with qualitative analysis.Polyethylene terephthalate,polypropylene,polyethylene,and polymethylmethacrylate were mainly manifested.The basis for the presence of microplastics in urban water supplies and the reference for the removal of microplastics during water supply treatment were provided in the experiment.
基金项目
国家自然科学基金(52060012)
&&(2023CYZC-41)
甘肃省科技厅自然科学研究项目(22JR5RA306)
兰州交通大学重大科技成果培育项目(2022CG07)
维普
万方数据