Retention of microplastics in a major secondary wastewater treatment plant in Vancouver, Canada 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Marine pollution bulletin
年/卷/期
2018 / 133 / Aug.
页码
553-561
ISSN号
0025-326X
作者单位
Coastal Ocean Research Institute, Ocean Wise Conservation Association,Environmental and Civil Engineering, University of British Columbia;Coastal Ocean Research Institute, Ocean Wise Conservation Association;Coastal Ocean Research Institute, Ocean Wise Conservation Association;Coastal Ocean Research Institute, Ocean Wise Conservation Association;Metro Vancouver;Environmental and Civil Engineering, University of British Columbia;Coastal Ocean Research Institute, Ocean Wise Conservation Association;
作者
Esther A. Gies;Jessica L. LeNoble;Marie No?l;Anahita Etemadifar;Farida Bishay;Eric R. Hall;Peter S. Ross;
摘要
Municipal wastewater treatment plants (WWTPs) are conduits through which microplastics (MPs) are released into aquatic environments. However, the technical challenges in working with wastewater sample matrices have precluded reliable particle count budget calculations. We applied newly-adapted methods for MP collection and analysis to a study of a major WWTP serving a population of 1.3 million people near Vancouver, Canada. Suspected MP particles, including fibres, were counted and categorized using light microscopy in influent, primary effluent, secondary effluent, primary sludge and secondary sludge. Fourier Transform Infrared Spectroscopy (FT-IR) confirmed that just 32.4% of the suspected MPs were plastic polymers. Using FT-IR corrected data, we estimate that 1.76?±?0.31 trillion MPs enter the WWTP annually, with 1.28?±?0.54 trillion MPs settling into primary sludge, 0.36?±?0.22 into secondary sludge, and 0.03?±?0.01 trillion MPs released into the receiving environment. This corresponds to a retention of microplastics of up to 99% in the WWTP.
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关键词/主题词
Microplastics;Plastic;FT-IR;Wastewater;Ocean;Pollution;
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