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An overview of the occurrence and distribution of plastics in wastewater treatment plants and the necessity of developing up-to-date management strategies
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Wastewater treatment plants (WWTPs) are a major pathway for plastic particles entering rivers and oceans, but research on what happens to plastics inside WWTPs remains incomplete. This overview calls for better monitoring methods and updated management strategies to reduce plastic discharge from treatment facilities.
Abstract Although studies suggest that wastewater treatment plants (WWTPs) are the main pathway for plastics into receiving waters, studies on the origin and fate of plastics entering WWTPs are imprecise and largely unexplored. The analysis of plastics in samples from WWTPs is also a relatively young and growing field compared with the marine environment. Furthermore, recent studies have shown that plastics are not uniformly distributed in WWTPs due to environmental factors and the inherent properties of plastics. Accordingly, this review article attempts to describe the current state of knowledge on plastic pollution in WWTPs and identify future research areas. In particular, this study describes the sources of plastics entering WWTPs and the analytical techniques used for the occurrence and properties of plastics in WWTPs. It also defines the role of these plastics as a possible source of microplastics and discusses the problems they can cause in WWTPs. The factors that can influence the variations in the number of plastics are defined. Furthermore, the policy needs for managing plastic pollution as a contribution to achieving the United Nations Sustainable Development Goals are assessed.
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This review examines studies on microplastic occurrence in wastewater treatment plant effluents, synthesizing evidence that treatment plants both retain and release significant quantities of microplastics and are a major pathway for plastic particles entering aquatic environments.
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This review examines the occurrence and behavior of microplastics in wastewater treatment plants (WWTPs), finding that while WWTPs remove a large proportion of incoming microplastics, they still discharge significant quantities into receiving water bodies daily. The paper calls for improved treatment technologies and better characterization of microplastic types in wastewater streams.
Review: An overview of the occurrence and distribution of plastics in wastewater treatment plants and the necessity of developing up-to-date management strategies — R0/PR2
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This review examines the occurrence and distribution of plastics across all stages of wastewater treatment plants, finding significant knowledge gaps about sources, fate, and removal efficiency. Wastewater plants are a primary pathway for microplastics entering aquatic environments, making better characterization essential for improving removal strategies.
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This review examines how wastewater treatment plants (WWTPs) contribute to microplastic pollution in receiving waterways, synthesizing evidence on removal efficiencies of different treatment stages and the characteristics of microplastics that escape into the environment. Researchers found that while WWTPs remove the majority of incoming microplastics, they remain a significant source of microplastic discharge due to the large volumes of wastewater processed daily.
A global review of microplastics in wastewater treatment plants: Understanding their occurrence, fate and impact
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A global review of 121 wastewater treatment plants found that microplastics are consistently present in both influent and effluent, with WWTPs acting as major conduits delivering plastics into aquatic and terrestrial ecosystems. While removal efficiencies varied widely, the sludge produced by these plants represents a concentrated secondary pathway for microplastic release to land.
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