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Removal of microplastic particles during municipal wastewater treatment: A current review
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This review examines how effectively municipal wastewater treatment plants remove microplastics before discharging water into the environment. Researchers found that while advanced treatment can remove over 98% of microplastics, large facilities may still release billions of particles daily, especially nanoplastics smaller than 1 micrometer that are harder to capture. The study suggests that additional purification steps and improved existing processes are needed to better protect waterways from microplastic contamination.
Wastewater treatment plants (WWTPs) are considered the main point source of microplastics (MPs) discharged into water bodies. The article discusses the types and number of MPs present in wastewater and the effectiveness of their removal at the municipal WWTP. The use of different methodologies for determining MPs makes it difficult to compare the results obtained in the studies of different authors. Limitations of various sampling, preparation and final identification techniques of MPs, that may lead to over or underestimating their number in wastewater, were indicated. Although the efficiency of MPs removal on WWPP is reaching 98% or more with advanced treatment, large WWTP could discharged as much as 1010 MPs/day. These values often do not take into account particles smaller than 1 µm (nanoplastics), of which the number in the effluent can be significant. MPs and their degradation products may have a harmful effect on the environment, therefore increasing their removal from wastewater is very important. This can be achieved by introducing additional purification processes, as well as improving the operation of existing ones.
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Recent advances on microplastics pollution and removal from wastewater systems: A critical review
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This review summarizes the latest research on microplastic detection, occurrence, and removal in wastewater treatment plants. While treatment plants can remove 57-99% of microplastics depending on the stage, significant amounts still escape into the environment through treated water and sludge. The findings highlight the need for advanced treatment methods to prevent microplastics from reaching waterways and ultimately human water supplies.
Effectiveness of conventional municipal wastewater treatment plants in microplastics removal: Insights from multiple analytical techniques
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Researchers evaluated the effectiveness of conventional municipal wastewater treatment plants in removing microplastics across multiple treatment stages, finding removal efficiencies of 70–90% but documenting that billions of particles still pass through in final effluent daily.
The Effect of Wastewater Treatment Plants on Retainment of Plastic Microparticles to Enhance Water Quality—A Review
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This review examined how well wastewater treatment plants remove microplastics, finding that most conventional systems achieve high removal rates but still discharge significant plastic quantities in treated effluent and sludge. Improving treatment efficiency and preventing sludge application to farmland are key strategies for reducing microplastic release.
Efficiency of microplastic removal from wastewater treatment plants
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This study evaluated how effectively conventional wastewater treatment plants remove microplastics before discharge into receiving waters. The findings highlight that while treatment plants do capture a significant portion of microplastics, they still release substantial quantities, making them a key pathway for environmental microplastic contamination.
Recent advances in treatment of microplastics in wastewater
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This review examines current methods for removing microplastics from wastewater, including conventional treatment processes and newer advanced techniques. Researchers found that while standard treatment plants can remove a significant portion of microplastics, many particles still pass through into waterways, and the captured plastics often end up concentrated in sewage sludge. The study highlights the need for improved treatment technologies to more effectively address microplastic contamination in water systems.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.