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Influence of wastewater treatment process on pollution characteristics and fate of microplastics

Marine Pollution Bulletin 2021 45 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.

Xia Xu, Xia Xu, Xia Xu, Xia Xu, Xia Xu, Ling Zhang, Ling Zhang, Xia Xu, Ling Zhang, Mingguo Peng Mingguo Peng Ling Zhang, Ling Zhang, Yun Jian, Mingguo Peng, Yun Jian, Yingang Xue, Xia Xu, Mingguo Peng, Xia Xu, Yingang Xue, Qiuya Zhang, Yun Jian, Yingang Xue, Yingang Xue, Qiuya Zhang, Yingang Xue, Yingang Xue, Yingang Xue, Qiuya Zhang, Yingang Xue, Yingang Xue, Yun Jian, Qiuya Zhang, Yun Jian, Ling Zhang, Yingang Xue, Yingang Xue, Yu Gao, Yun Jian, Yu Gao, Ling Zhang, Mingguo Peng Mingguo Peng, Mingguo Peng Mingguo Peng, Mingguo Peng, Ling Zhang, Mingguo Peng Shanqing Jiang, Shanqing Jiang, Shanqing Jiang, Mingguo Peng Qiuya Zhang, Qiuya Zhang, Mingguo Peng, Shanqing Jiang, Qiuya Zhang, Qiuya Zhang, Qiuya Zhang, Qiuya Zhang, Qiuya Zhang, Ling Zhang, Qiuya Zhang, Qiuya Zhang, Qiuya Zhang, Qiuya Zhang, Mingguo Peng, Qiuya Zhang, Xia Xu, Mingguo Peng

Summary

Researchers investigated microplastic abundance and removal efficiency across four wastewater treatment plants using different treatment technologies, finding influent concentrations between 539 and 1,290 particles per liter that were reduced substantially by primary and secondary treatment. Smaller microplastic particles proved hardest to remove and most likely to persist in final effluent.

Study Type Environmental

The increasing abundance of microplastics (MPs) in rivers and oceans continues to face major challenges. In particular, MPs with smaller particle sizes are difficult to identify and quantify when they reach the environment. This study investigated four typical wastewater treatment plants (WWTPs), including urban WWTPs and industrial WWTP with different treatment technologies. The results showed that the average abundance of MPs in the influent and effluent was 538.67 ± 22.05 n/L to 1290 ± 65.26 n/L and 20.44 ± 1.19 n/L to 40.67 ± 11.12 n/L. The primary and secondary treatment processes can effectively remove MPs between 51.04% and 72.82% from wastewater. After tertiary treatments, the removal efficiency was further increased to more than 90%. The study aims to explore the removal mechanism of MPs in each stage of the wastewater treatment process and to reveal the fate of MPs in WWTPs, and help to understand their future monitoring to optimize the wastewater treatment process.

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