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61,005 resultsShowing papers similar to Interactions between microplastics and unit processes of wastewater treatment plants: a critical review
ClearMicroplastics 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.
Effectiveness 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.
Fate and occurrence of microplastics in wastewater treatment plants
This review summarizes recent research on the abundance and removal of microplastics in wastewater treatment plants, examining how different treatment stages capture or release microplastic particles and assessing the overall efficiency of current infrastructure.
Microplastics removal in wastewater treatment plants: a critical review
This critical review of microplastic removal in wastewater treatment plants examines removal efficiencies across different treatment stages, finding that while WWTPs remove the majority of microplastics from influent, they still release millions of particles daily and are a major pathway for microplastics entering aquatic environments.
Removal of microplastics in unit processes used in water and wastewater treatment: a review
This review evaluates various water and wastewater treatment technologies for their ability to remove microplastics, including filtration, coagulation, and advanced oxidation methods. The authors found that while conventional treatment plants can remove a large percentage of microplastics, significant quantities still pass through into treated water. The study calls for combining multiple treatment steps and developing new technologies specifically designed to capture micro- and nanoplastic particles.
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.
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.
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.
Where do they go? A review of the wastewater treatment process and its impact on the fate of microplastics
This review examines the fate of microplastics across the physical, chemical, and biological stages of wastewater treatment plant (WWTP) processes, finding that WWTPs act as both sources and destinations for microplastics while not being designed to remove them, and surveying new removal strategies.
Nano and microplastics occurrence in wastewater treatment plants: A comprehensive understanding of microplastics fragmentation and their removal
This review provides a comprehensive look at how nano- and microplastics move through wastewater treatment plants, from entry to discharge. Researchers examined how larger plastic particles fragment into smaller nano-sized pieces during treatment processes and evaluated which treatment stages are most effective at removing them. The study finds that while conventional treatment removes most microplastics, significant quantities of nanoplastics may still pass through into waterways.
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.
Characterization and Removal of Microplastics in Different Stages of Wastewater Treatment Plants
This review examines the types, shapes, and sizes of microplastics found in domestic and industrial wastewaters and evaluates the removal efficiency of different treatment processes across wastewater treatment plant stages, noting that no existing process achieves 100% removal.
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.
Micro- and nanoplastics removal mechanisms in wastewater treatment plants: A review
This review examines how conventional wastewater treatment plants remove micro- and nanoplastics, and evaluates advanced technologies like membrane filtration and electrocoagulation that could improve removal rates. While existing treatment plants can capture most microplastics, they still release significant quantities into waterways through their enormous discharge volumes. The study highlights that biological treatment steps may also transform microplastics in potentially harmful ways that need further investigation.
Fate of microplastics and other small anthropogenic litter (SAL) in wastewater treatment plants depends on unit processes employed
Researchers tracked the fate of microplastics and other small anthropogenic litter through a wastewater treatment plant, finding that most particles were removed but a substantial number passed through in the effluent. The study highlights that while treatment plants reduce microplastic loads, they cannot fully prevent plastic particles from reaching aquatic environments.
Microplastics in Wastewater Treatment Plants: Characteristics, Occurrence and Removal Technologies
This review summarizes how wastewater treatment plants are a major pathway for microplastics entering the environment, covering the types, sizes, and sources of microplastics found in wastewater. While treatment plants can remove many microplastics, significant amounts still escape into rivers and oceans through treated water and sludge. The authors evaluate various removal technologies and recommend advanced treatment methods to better prevent microplastics from reaching water supplies.
Fate and behavior of microplastics in wastewater, accumulation in organisms and effects
This review examines the fate and behavior of microplastics through wastewater treatment plant (WWTP) unit processes, their accumulation in sludge, and their effects on aquatic organisms receiving treated effluent. The authors note that while conventional WWTPs remove 64-99% of microplastics, the remaining daily discharge still represents a substantial pathway for microplastic entry into aquatic environments.
Fate and effects of microplastics in wastewater treatment processes
This review of microplastic fate in wastewater treatment plants found that secondary treatment removes ~98% of MPs from effluent, while MPs that remain can interfere with nitrogen conversion, increase chemical dosing requirements, and cause membrane fouling in advanced treatment systems.
Wastewater Treatment Approaches to Remove Microplastics
This review summarizes current approaches for removing microplastics from wastewater, noting that treatment plants capture many particles but are not fully effective — particularly for small fibers from laundry. Improving wastewater treatment efficiency is a key strategy for reducing the microplastic loads entering rivers and oceans.
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: Transport and removal at wastewater treatment plants
This book chapter reviews the transport and removal of microplastics at wastewater treatment plants, summarizing efficiency data across different treatment processes. Even high-performing plants release microplastics into water bodies, making treated effluent a significant ongoing source of environmental contamination.
Wastewater treatment plant effluent as a source of microplastics: review of the fate, chemical interactions and potential risks to aquatic organisms
This review examines wastewater treatment plant effluent as a source of microplastics entering aquatic environments. The study found that even though treatment plants remove most microplastics, the small amounts remaining in effluent may still contribute significantly to environmental contamination, and the chemical interactions between microplastics and other pollutants in wastewater raise additional ecological concerns.
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.
Understanding microplastic presence in different wastewater treatment processes: Removal efficiency and source identification
Researchers tracked microplastic removal across different treatment stages at two wastewater treatment plants and found overall removal rates of 90% and 97%. They discovered that population density in the served area was a bigger driver of influent microplastic levels than sewage volume, and that activated sludge served as the primary trap for captured particles. The study identified laundry washing and daily consumer products as the main sources of microplastics entering the treatment plants.