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61,005 resultsShowing papers similar to Seasonal Variations in Microplastic Abundance and Removal Efficiency in Wastewater Treatment Plants in Bangkok, Thailand
ClearUnravelling capability of municipal wastewater treatment plant in Thailand for microplastics: Effects of seasonality on detection, fate and transport
Microplastic fate and transport in a wastewater treatment plant in Nonthaburi, Thailand were tracked during both dry and wet seasons, finding that seasonal variation in flow rates and influent composition affected microplastic removal efficiency and the polymer types discharged to the receiving environment.
Occurrence of Microplastics across Seasonal Variations in a Municipal Wastewater Treatment Plant in Thailand
Researchers monitored microplastic concentrations at a Thai municipal wastewater treatment plant across rainy, winter, and summer seasons of 2023–2024. Microplastic levels were highest during the rainy season, demonstrating that seasonal variation and rainfall significantly influence microplastic abundance and treatment efficiency.
Microplastics in wastewater and sludge from centralized and decentralized wastewater treatment plants: Effects of treatment systems and microplastic characteristics
Researchers compared microplastic removal at centralized and decentralized wastewater treatment plants in Bangkok, Thailand. They found that centralized plants removed 50-97% of microplastics while smaller decentralized plants removed only 14-54%, with both types concentrating significant amounts of microplastics in their sludge, up to 228,100 particles per kilogram of dry weight.
Microplastics in an urban wastewater treatment plant: The influence of physicochemical parameters and environmental factors
Microplastics were quantified across four treatment stages of an urban wastewater treatment plant, finding an overall 90.3% removal efficiency with fragments and fibers dominating the final effluent, and identifying rainfall events and seasonal variation as significant factors affecting MP concentrations. The study highlights the importance of environmental variables when monitoring MP removal at WWTPs.
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.
Microplastic distributions in a domestic wastewater treatment plant: Removal efficiency, seasonal variation and influence of sampling technique
A year-long study of a municipal wastewater treatment plant found 97% removal efficiency for microplastics overall, but fibers made up a larger proportion of remaining particles in treated water than in raw sewage, and winter samples had notably higher microplastic concentrations. The study highlights seasonal variation as an important factor in assessing wastewater microplastic loads.
Identification and Analysis of Plastic Microparticles in the Inlet and Outlet of the Wastewater Treatment Plant and Investigation of the Relationship between Different Seasons of the Year with the Amount of Production and Emission of Particles
Researchers identified and characterized microplastics at the inlet and outlet of a wastewater treatment plant across different seasons, finding that conventional treatment fails to fully remove microplastics and that particle concentrations and types varied with seasonal changes.
Microplastic Pollution in an Urban Wastewater Treatment Plant: Unravelling Problems and Proposing Solutions
A study at a municipal wastewater treatment plant in Bangkok, Thailand found microplastics in all wastewater streams tested, with the plant removing only about 67% of incoming particles — leaving a significant load being discharged into the environment. The researchers identified which treatment stages were most and least effective, and proposed practical improvements including adding filtration and coagulation steps. Given that wastewater treatment plants are a primary pathway for microplastics entering rivers and ultimately oceans, improving their removal efficiency is a high-priority intervention.
Seasonal variation and removal efficiency of microplastics in wastewater treatment: a year-long study across three municipal water reclamation plants
A year-long study across three municipal water reclamation plants found significant seasonal variation in microplastic concentrations and removal efficiencies, with effective but incomplete removal leaving residual microplastics in effluent that posed low to medium ecological risks to receiving water bodies.
Microplastics in industrial wastewater treatment plant: Quantification, identification and ecological risk assessment
Researchers quantified microplastics in an industrial wastewater treatment plant in Thailand across wet and dry seasons, finding the highest concentrations after the aeration treatment stage. The study demonstrates that industrial wastewater treatment is an important but undermonitored pathway for microplastics entering aquatic environments.
Microplastics in Mediterranean coastal wastewater treatment plants: Seasonal trends driven by tourism and weather conditions
Researchers monitored microplastics at two Mediterranean coastal wastewater treatment plants in Spain, finding influent concentrations of 30-75 particles/L with seasonal peaks in warmer months, removal efficiencies of 73-86%, and significant correlations between microplastic concentrations and both temperature and precipitation, with polypropylene and polyethylene dominating polymer profiles.
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.
Unraveling microplastics removal in wastewater treatment plant: A comparative study of two wastewater treatment plants in Thailand
Researchers compared microplastic removal efficiency at two wastewater treatment plants in Bangkok, finding that a facility equipped with ultrafiltration as a final polishing step achieved substantially higher microplastic removal than conventional treatment alone.
Microplastic contamination in a conventional wastewater treatment plant in Thailand
Microplastic contamination was investigated throughout a conventional urban wastewater treatment plant in Thailand, tracking particles through influent, treatment stages, and effluent. The study quantified how treatment processes reduced but did not eliminate microplastic discharge into receiving water bodies.
Characteristics and removal of microplastics in urban domestic WWTP system: A case study in Bandung city, Indonesia
Four communal wastewater treatment plants in Bandung, Indonesia had high incoming microplastic concentrations averaging 537.5 particles/L, with fibers (52%) and particles 1,001–5,000 µm dominant, but showed partial removal efficiency during treatment.
Seasonal variation and complex analysis of microplastic distribution in different WWTP treatment stages in Lithuania
A seasonal 12-month monitoring study of a municipal wastewater treatment plant in Lithuania measured microplastic concentrations in wastewater and sludge through all treatment stages. Microplastics were detected throughout the plant with overall removal efficiencies above 90%, but seasonal variation in inflow concentrations reflected climate-driven changes in stormwater inputs.
Evaluation of microplastic removal efficiency of wastewater-treatment plants in a developing country, Vietnam
Researchers evaluated microplastic removal efficiency at four wastewater treatment plants in Vietnam, finding removal rates of 92-99% but substantial daily microplastic loads still entering receiving waters through effluent discharge.
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.
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.
Seasonal microplastic variations in estuarine sediments from urban canal on the west coast of Thailand: A case study in Phuket province
Researchers investigated seasonal variations in microplastic contamination in estuarine sediments from an urban canal in Phuket, Thailand. They found microplastic abundance was higher in the dry season than the rainy season, with rayon and polyester being the most common polymer types, suggesting that seasonal hydrological patterns and human activities both influence microplastic distribution in urban estuaries.
Quantification and Characterization of Microplastics in Seven Urban Wastewater Treatment Plants
Wastewater treatment plants are a key pathway through which microplastics enter rivers and coastal waters, and this six-month study across seven Spanish treatment plants found that conventional processes offer inconsistent and often inadequate protection. Microplastics were present in all samples, and in some cases effluent concentrations were nearly as high as influent concentrations — meaning the plants were adding little removal value for plastic particles. The dominance of synthetic fibers and the seasonal variation observed point to the need for better tertiary treatment steps to capture microplastics before discharge.
Abundance and characteristics of microplastics in freshwater and treated tap water in Bangkok, Thailand
Microplastics were detected in freshwater sources and treated tap water in Bangkok, Thailand, with higher concentrations in surface water than tap water, suggesting that existing treatment processes partially remove microplastics but do not eliminate them.
Evaluating Microplastics Removal Efficiency of Textile Industry Conventional Wastewater Treatment Plant of Thailand
A Thai textile wastewater treatment plant was found to be releasing significant quantities of microplastics into adjacent waterways, with conventional treatment processes failing to remove the majority of plastic particles.
Effects 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.