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Microplastics removal and characteristics of a typical multi-combination and multi-stage constructed wetlands wastewater treatment plant in Changsha, China

Chemosphere 2022 27 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Lingshi Yin Lingshi Yin Xiaofeng Wen, Xiaofeng Wen, Lingshi Yin Lingshi Yin Jianwu Wang, Lingshi Yin Yuannan Long, Xiaofeng Wen, Yuannan Long, Yuannan Long, You Zhang, Xiaofeng Wen, Lingshi Yin Lingshi Yin Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Zhenyu Zhou, Zhenyu Zhou, Yuannan Long, You Zhang, Xiaofeng Wen, Lingshi Yin Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Lingshi Yin Xiaofeng Wen, Xiaofeng Wen, Lingshi Yin Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Lingshi Yin Lingshi Yin Ruihao Xiao, You Zhang, Wenming Wang, Zhenyu Zhou, Zhenyu Zhou, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Ruihao Xiao, Wenming Wang, Xiaofeng Wen, Xiaofeng Wen, Yuannan Long, Xiaofeng Wen, Xiaofeng Wen, Yuannan Long, Jianwu Wang, Zhenyu Zhou, Xiaofeng Wen, Ruihao Xiao, Ruihao Xiao, Zhenyu Zhou, Ruihao Xiao, Ruihao Xiao, Xiaofeng Wen, Ruihao Xiao, Ruihao Xiao, Ruihao Xiao, You Zhang, Xiaofeng Wen, Lingshi Yin Xiaofeng Wen, Ruihao Xiao, Xiaofeng Wen, Xiaofeng Wen, Lingshi Yin Xiaofeng Wen, Wenming Wang, Lingshi Yin Zhenyu Zhou, Xiaofeng Wen, Ruihao Xiao, Lingshi Yin Lingshi Yin Wenming Wang, Yuannan Long, Xiaofeng Wen, Ruihao Xiao, You Zhang, Lingshi Yin Lingshi Yin You Zhang, Xiwei Li, Ruihao Xiao, Jianwu Wang, Jianwu Wang, Ruihao Xiao, Yuannan Long, Yuannan Long, Zhenyu Zhou, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Xiaofeng Wen, Ruihao Xiao, Ruihao Xiao, Jianwu Wang, Ruihao Xiao, Yuannan Long, Ruihao Xiao, Ruihao Xiao, Lai Xu, Ruihao Xiao, Lai Xu, Lingshi Yin Ruihao Xiao, Xiaofeng Wen, Ruihao Xiao, Ruihao Xiao, You Zhang, Ruihao Xiao, Ruihao Xiao, Xiaofeng Wen, Ruihao Xiao, Ruihao Xiao, Ruihao Xiao, Ruihao Xiao, Xiwei Li, Ruihao Xiao, Lingshi Yin Chaoping Deng, Zhenyu Zhou, Lingshi Yin Zhenyu Zhou, Chaoping Deng, Lingshi Yin Cao Jin-song, Yuannan Long, Cao Jin-song, You Zhang, Xiaofeng Wen, Lingshi Yin Lingshi Yin Xiaofeng Wen, Lingshi Yin Xiaofeng Wen, Lingshi Yin Xiaofeng Wen, Lingshi Yin

Summary

Researchers evaluated microplastic removal efficiency in a multi-stage constructed wetland wastewater treatment plant in China, finding that the combined treatment processes achieved significant microplastic reduction across successive stages, with constructed wetlands proving effective as a polishing step for microplastic removal.

Polymers

PE PS

Study Type Environmental

Wastewater treatment plants (WWTPs) are an important source of microplastics (MPs) entering the aquatic environment. As environmental awareness increases, WWTPs are gradually using constructed wetlands (CWs) in the depth treatment stage. There were few studies related to MPs removal efficiency of CWs, especially in multi-stage and multi-combinations CWs. Therefore, we studied MPs characteristics and removal in a typical CWs WWTP in Changsha, comparing the MPs removal efficiencies of different processes in a WWTP, focusing on the MPs abundance variation in different stages CWs. Result showed that the MPs removal efficiency of Phase Ⅰ was 87.72% and that of Phase II was 80.65%. Approximate estimates showed that the daily discharge of MPs reached 7.20 * 10 items. The MPs removal efficiency of vertical flow CWs was 25.71%. The MPs removal efficiencies of secondary and tertiary horizontal subsurface flow CWs (HSSFCWs) were 32.00% and 21.43%. The MPs removal efficiencies of secondary and tertiary surface flow CWs were 23.53% and 12.50%. The MPs removal efficiencies of three bio-ponds were -23.08%, -12.90%, and -27.27%. Combined system of bio-pond + CWs reduced the MPs removal efficiency. The most dominant shape of MPs in wastewater was fibers. The most common MPs were polyethylene and polystyrene. The primary treatment in the Changsha WWTP had the highest MPs removal efficiency. Results of this investigation showed the multi-combination and multi-stage CWs WWTP can remove most of MPs in influent, which greatly reduced the amount of MPs discharged into the aquatic environment through WWTP and provided data for analyzing the distribution of MPs in the aquatic environment.

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