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61,005 resultsShowing papers similar to Microplastic pollution is widely detected in US municipal wastewater treatment plant effluent
ClearEffectiveness of conventional municipal wastewater treatment plants in microplastics removal: Insights from multiple analytical techniques
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.
Wastewater treatment plants as a pathway for microplastics: Development of a new approach to sample wastewater-based microplastics
Researchers developed a new sampling and monitoring protocol for microplastics at wastewater treatment plants, enabling more consistent tracking of microplastic loads through treatment stages and discharged effluent.
Influence of wastewater treatment process on pollution characteristics and fate of microplastics
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.
Microplastics in Wastewater
This review examines microplastic detection, occurrence, and removal across wastewater treatment plant stages, finding that while treatment plants are a major source of microplastic pollution, no standardized detection protocols exist and removal efficiency remains inconsistent across facilities.
Recent advances on microplastics pollution and removal from wastewater systems: A critical review
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.
Research progress on microplastics in wastewater treatment plants: A holistic review
This review provides a holistic assessment of microplastics in wastewater treatment plants, covering sampling methods, occurrence patterns across treatment stages, removal efficiencies, and the environmental risks posed by microplastic discharge through effluent and sludge.
The fate of microplastics in wastewater treatment plants: An overview of source and remediation technologies
This review examines how wastewater treatment plants serve as key pathways for microplastic entry into the environment, analyzing removal efficiencies across different treatment stages and identifying advanced technologies for improved microplastic remediation.
Evaluation of the Presence of Microplastics in Wastewater Treatment Plants: Development and Verification of Strategies for Their Quantification and Removal in Aqueous Streams
Researchers evaluated microplastic presence in wastewater treatment plants and developed a pilot capture system capable of detecting, quantifying, and removing microplastic particles from water. The study found that conventional treatment processes are insufficient for complete microplastic removal, highlighting the need for dedicated technologies to address this gap in water treatment infrastructure.
Distribution and occurrence of microplastics in wastewater treatment plants
Researchers investigated microplastic distribution in three industrial wastewater treatment plants in Vietnam, finding average removal efficiencies of only 21-26%, with billions of microplastic particles discharged daily into receiving waters from the largest plant.
Study of occurrence, abundance, and characterization of microplastics in wastewater treatment plant in New Delhi, India
Researchers quantified microplastic prevalence in influent, treated effluent, and sludge from a wastewater treatment plant in New Delhi, finding that MPs are present throughout the treatment process and that the plant incompletely removes them, discharging MPs into receiving waters.
Navigating microplastics in wastewater treatment: Understanding analysis, mitigation, removal strategies, impact, and current knowledge gaps
Researchers reviewed how wastewater treatment plants (WWTPs) handle microplastic pollution, finding that while WWTPs significantly reduce microplastic levels, they still release hundreds of particles per liter into the environment daily, and inconsistent testing methods make it hard to compare results across studies.
A global review of microplastics in wastewater treatment plants: Understanding their occurrence, fate and impact
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.
Occurrence and Removal of Microplastics in Wastewater Treatment Plants: Perspectives on Shape, Type, and Density
Researchers compiled data from multiple countries on microplastic removal efficiency across different stages of wastewater treatment plants. They found that removal rates varied widely, from 48% in some facilities to over 90% in others, depending on the treatment technologies employed. The study suggests that while conventional wastewater treatment can capture a significant portion of microplastics, advanced tertiary treatment methods are needed to further reduce discharge into the environment.
Microplastic removal and environmental emissions from municipal wastewater treatment plants
This study measured microplastic levels in wastewater entering and leaving five treatment plants using different technologies, finding that while plants remove a large portion of microplastics, they still release significant amounts into the environment through treated water. Since wastewater effluent flows into rivers and oceans that supply drinking water and food sources, this ongoing release is a concern for human exposure.
Are wastewater treatment plants as the source of microplastics in surface water and soil?
Researchers investigated the relationship between microplastic contamination in wastewater treatment plants (WWTPs) and in nearby surface water and soil, finding that while WWTPs effectively remove most microplastics, they still contribute to surrounding environmental contamination.
Occurrence, Characteristics, and Removal of Microplastics in Wastewater Treatment Plants
This review summarizes the occurrence, characteristics, and removal efficiency of microplastics in wastewater treatment plants, highlighting how these facilities simultaneously act as sinks trapping microplastics and as sources releasing them into surrounding aquatic and terrestrial environments.
A review of the removal of microplastics in global wastewater treatment plants: Characteristics and mechanisms
This review analyzed data from 38 wastewater treatment plants across 11 countries to understand how effectively they remove microplastics. While treatment plants can remove the majority of microplastics from wastewater, significant quantities still pass through into waterways, and the microplastics captured in sewage sludge may re-enter the environment when that sludge is applied to farmland.
The Effect of Wastewater Treatment Plants on Retainment of Plastic Microparticles to Enhance Water Quality—A Review
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.
Microplastics in wastewater treatment plants: Sources, properties, removal efficiency, removal mechanisms, and interactions with pollutants
This review examines microplastic sources, properties, removal efficiency, and removal mechanisms across different wastewater treatment plant stages. Researchers found that while treatment plants remove a significant portion of microplastics, they cannot eliminate them entirely, resulting in the continued release of millions of particles into the environment daily through effluent and sludge.
Microplastics removal through water treatment plants: Its feasibility, efficiency, future prospects and enhancement by proper waste management
Researchers reviewed over 80 studies on water treatment plant performance and found microplastic removal ranges widely — from 16% in basic primary treatment up to near 100% with advanced membrane systems — but a major flaw is that removed microplastics concentrate in sludge, which can re-enter the environment. The review recommends optimizing coagulants and sludge treatment to prevent microplastics from simply being relocated rather than eliminated.
Abundance and characteristics of microplastics in municipal wastewater treatment plant effluent: a case study of Guangzhou, China
This study quantified microplastics in the effluent of a large wastewater treatment plant in Guangzhou, China, finding that the plant releases hundreds of millions of microplastic particles per day despite removing most particles during treatment. Even highly efficient wastewater treatment plants are a significant ongoing source of microplastics entering rivers and coastal waters.
Municipal effluent as a potential source of microplastics in the aquatic environment
This review examined municipal wastewater treatment plants as potential sources of microplastics—including microbeads from personal care products and synthetic fibers from laundry—in aquatic environments. While modern treatment plants remove a significant fraction of microplastics, they may still discharge millions of particles per day and their capacity to remove the smallest particles is limited.
Toward a Better Understanding of the Contribution of Wastewater Treatment Plants to Microplastic Pollution in Receiving Waterways
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.
Establishment and application of standard analysis methods for microplastic samples: Urban sewage and sewage sludge as a source of microplastics in the environment
Researchers developed a standardized method for measuring microplastics in wastewater treatment plants and found that treated wastewater still releases an estimated 14.2 billion microplastic particles per day into the environment. While treatment plants remove most microplastics from the water, many end up concentrated in sewage sludge, which is often spread on farmland. The findings highlight that wastewater treatment is a major pathway for microplastics to reach rivers and agricultural soil.