LIKai-ming,QIJie,MENGXin.Occurrence Characteristics and Removal Patterns of Microplastics in the Influent of Different Wastewater Treatment Plants in Handan City[J].China Water & Wastewater,2025,41(7):1-7.
邯郸市不同污水处理厂进水微塑料赋存特征及去除
- Title:
- Occurrence Characteristics and Removal Patterns of Microplastics in the Influent of Different Wastewater Treatment Plants in Handan City
- 摘要:
- 以邯郸市两座采用不同工艺的污水处理厂为研究对象，考察了进水中微塑料（MPs）的丰度特征以及各处理单元对不同形状、粒径、颜色和类型的微塑料的去除效果。采用密度浮选和消解分离提取MPs，经体视显微镜观察并结合傅里叶变换显微红外光谱仪获得其赋存特征。结果表明，进水中的微塑料主要为纤维状，优势粒径集中在0~0.5 mm，聚合物类型主要为聚丙烯（PP）和聚乙烯（PE）。两座污水处理厂对微塑料的总去除率分别为（83.62±1.59）%和（93.20±2.17）%，去除能力存在一定差异，这可能与其采用的处理工艺不同有关。此外，纤维状MPs的去除难度最大；随MPs粒径降低，去除难度增加；颜色不是影响MPs去除效果的因素。
- Abstract:
- This study took two wastewater treatment plants (WWTPs）with different processes in Handan, China, as the research subjects, aiming to explore the abundance characteristics of microplastics（MPs）in their influent and the removal effects of different treatment units on microplastics of various shapes, sizes, colors, and types. Density flotation and dissolution separation were used to extract MPs, which were observed under a stereomicroscope and analyzed for their occurrence characteristics using a Fourier transform microscopic infrared spectrometer. The results indicated that the microplastics in the influent were mainly fibrous, with the dominant particle size of 0-0.5 mm, and the main polymer types were polypropylene (PP) and polyethylene (PE). The total removal rates of microplastics by the two WWTPs were (83.62±1.59)% and (93.20±2.17)%, respectively. There was a difference in the removal ability of microplastics between two WWTPs, which was related to their different treatment processes. Fibrous MPs were the most difficult to remove; as the size of MPs decreased, the difficulty of removal increased; color was not a factor affecting the removal of MPs.
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