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61,005 resultsShowing papers similar to Abundance, morphology, and removal efficiency of microplastics in two wastewater treatment plants in Nanjing, China
ClearEffects of different treatment processes in four municipal wastewater treatment plants on the transport and fate of microplastics
Researchers investigated microplastic transport and fate across four municipal wastewater treatment plants in southeastern China, finding that different treatment processes varied in their microplastic removal efficiency, with fibers and fragments as the dominant types.
Abundance and removal characteristics of microplastics at a wastewater treatment plant in Zhengzhou
Researchers investigated microplastic abundance and removal efficiency across treatment stages at a wastewater treatment plant in Zhengzhou, China, sampling sewage at each processing section to track migration and fate of microplastics. The study characterized removal rates and identified which treatment stages were most effective at capturing microplastic contaminants.
The Pollution Characteristics and Fate of Microplastics in Typical Wastewater Treatment Systems in Northern China
Researchers analyzed microplastic contamination at two wastewater treatment plants in Zhengzhou, China, finding overall removal efficiencies of about 93 and 96 percent respectively. Fibers and fragments were the most common microplastic shapes detected, with much of the removed material ending up concentrated in sewage sludge. The study raises concerns that while treatment processes are effective at reducing waterborne microplastics, the contaminated sludge may redistribute the pollution when applied to agricultural land.
Spatiotemporal Distribution Characteristics and Removal Efficiency of Microplastics in a Wastewater Treatment Plant
Researchers examined microplastic removal efficiency across three seasons at a wastewater treatment plant in Zhengzhou, China, sampling influent, process effluent, and final effluent. They found an overall removal efficiency of 86%, with polypropylene and polyethylene terephthalate as the dominant polymer types and fragment- and granule-shaped particles comprising over 80% of microplastics detected.
Microplastics in 48 wastewater treatment plants reveal regional differences in physical characteristics and shape-dependent removal in the transition zone between North and South China
Researchers analyzed microplastic physical characteristics and removal efficiency in influent and effluent from 48 wastewater treatment plants across three regions of Shaanxi Province, China with different climates and economic development levels. Removal efficiency correlated negatively with foam content and positively with fiber and film content, and particles between 0.5 and 1.0 mm were removed most efficiently.
Occurrence and Removal of Microplastics in Tertiary Wastewater Treatment Plants: A Case Study of Three Plants in Zhengzhou, China
Researchers studied microplastic occurrence and removal efficiency at three wastewater treatment plants in Zhengzhou, China. The study found influent concentrations ranging from 147 to 289 particles per liter, with removal efficiencies between 76% and 91%, indicating that while treatment plants significantly reduce microplastic levels, substantial quantities still pass through to receiving waters.
Characteristics and removal efficiency of microplastics in sewage treatment plant of Xi'an City, northwest China
Researchers systematically tracked microplastic transport, characteristics, and removal through both the sewage and sludge treatment streams of a Chinese wastewater treatment plant. The study found that while most microplastics were removed from effluent, substantial quantities accumulated in sludge.
Abundance, Characteristics, and Removal of Microplastics in Wastewater Treatment Plant located in Southwest China
Researchers investigated microplastic abundance, characteristics, and removal efficiency at a wastewater treatment plant in Leshan, Southwest China, finding influent concentrations of 267.74 particles/L reduced to 68.34 particles/L in effluent, achieving a 74.48% total removal rate, with smaller particles (0.05-0.3 mm) being the most prevalent and hardest to remove.
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.
Investigation of microplastics in sludge from five wastewater treatment plants in Nanjing, China
Microplastics were characterized in sludge from five wastewater treatment plants in Nanjing, China, with concentrations ranging widely across facilities and fibers as the dominant shape, highlighting sludge as a major reservoir and potential environmental release point for microplastic pollution.
Occurrence and Characteristics of Microplastics in a Wastewater Treatment Plant
Researchers sampled the inflow, outflow, and sludge of a Chinese wastewater treatment plant, finding up to 44 microplastic particles per liter in incoming water — mostly polyester fibers. The plant removed about 96% of microplastics, but the remaining fraction was still discharged into receiving waterways.
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.
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.
[Removal of Microplastics by Different Treatment Processes in Shanghai Large Municipal Wastewater Treatment Plants].
A study of two large wastewater treatment plants in Shanghai found that microplastic concentrations in incoming sewage were very high, and overall removal efficiency ranged from 63% to 90% depending on treatment processes. Even with high removal rates, large volumes of microplastics are still discharged to waterways daily.
Microplastic abundance, characteristics, and removal in wastewater treatment plants in a coastal city of China
Researchers studied microplastic contamination across seven wastewater treatment plants in the coastal Chinese city of Xiamen and found that while treatment removed the vast majority of particles, the remaining microplastics still entered coastal waters in significant quantities due to high effluent volumes. Fibers and fragments were the most common microplastic types detected. The study underscores that wastewater treatment plants are both a barrier to and a source of marine microplastic pollution.
Distribution of Microplastics in Domestic Wastewater and Microplastics Removal Potential in Wastewater Treatment Plants
Researchers examined the distribution of microplastics in domestic wastewater in Indonesia and assessed the microplastic removal potential of wastewater treatment plants, using digestion, vacuum filtration, and microscopy to identify microplastics by concentration, shape, size, and color across treatment stages.
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.
Characteristics and removal of microplastics in rural domestic wastewater treatment facilities of China
Researchers studied microplastic abundance, characteristics, and removal efficiency at five rural domestic wastewater treatment facilities in the Hangzhou region of China. The study found that influent contained 430 to 2,154 microplastic items per cubic meter, predominantly polypropylene, and that treatment processes achieved varying levels of removal, highlighting rural wastewater as a source of microplastic pollution.
[Whole Process Analysis and Fate Behavior of Microplastics in Urban Wastewater Treatment Plants, Including their Occurrence Forms, Components, and Removal Efficiency].
A full-process analysis at a wastewater treatment plant in Hohhot, China found that fibrous microplastics were most abundant, accounting for 61.8 percent of total particles, with particle size and abundance changing across treatment stages. The study maps how microplastics migrate and what fraction is removed by each treatment step.
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.
Research Progress on Occurrence, Removal and Fate of Microplastics in WWTPs
Wastewater treatment plants (WWTPs) are a major route by which microplastics reach rivers and oceans, yet they also remove a substantial portion of incoming particles. This review synthesizes data on microplastic abundance, shape, size, and polymer type across WWTP influent, effluent, and sludge, finding that fibres become proportionally more dominant in effluent while PP, PE, PA, and PET dominate throughout. Understanding WWTP performance is critical because sludge applied to farmland and treated effluent discharged to waterways both represent significant ongoing sources of microplastic contamination.
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.
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.
Nationwide evaluation of microplastic properties in municipal wastewater treatment plants in South Korea
Researchers evaluated microplastic levels at 22 municipal wastewater treatment plants across South Korea and found that while the plants remove over 99% of microplastics, the sheer volume of treated water still releases significant quantities into receiving waterways. Most removal happened during the sedimentation stage, and the most common microplastic types found were fragments and fibers under 300 micrometers. The study suggests that despite high removal efficiency, wastewater treatment plants remain an important source of microplastic discharge into the environment.