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Evaluating Microplastics Removal Efficiency of Textile Industry Conventional Wastewater Treatment Plant of Thailand
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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.
Global plastic pollution is a serious problem. From manufacture to disposal, microplastics appear at every point in the textile life cycle. Numerous case studies demonstrated that wastewater treatment facilities cannot remove the microplastics they produce. The purpose of this study was to evaluate the amount of microplastics that leaks into the canal and adjacent water bodies from a wastewater treatment facility serving the textile industry in Thailand, as well as to discover the differences between the samples taken upstream and downstream. NOAA protected laboratory investigation based findings indicated that 590–601 microplastics particles per cubic meter (particles/m3) flowed into the canal; however, the upstream sample (344–349) had more particles/m3 than the downstream sample (246–252). The industry leaked microplastics on average 172 particles/m3 upstream and 123 particles/m3 downstream. Our research revealed that the wastewater treatment plant's ability to capture microplastics particles was insufficient. A reliable mechanism to remove microplastics particles from wastewater treatment is required to protect environment, aquatic life, and water quality without interfering with industrial operations. This research emphasizes the Sustainable Development Goals, Responsible Production and Consumption (Goal 12), and Life below Water (Goal 14).
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Researchers measured microplastic concentrations in the influent and effluent of two industrial wastewater treatment plants in Thailand, finding up to 102 particles per liter in incoming wastewater. Both plants removed most microplastics through their treatment processes, but some particles were still discharged into receiving waterways.
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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.
Assessing microplastic fate through textile wastewater treatment plants: Stage-specific retention and removal performance
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Textile factory wastewater is loaded with microplastics (mostly nylon fibers from fabric), and this study found that adding an extra filtering step, called tertiary treatment, removes over 95% of these particles before the water is released, compared to just 72% with standard treatment alone. Since these plants are a major gateway for microplastics into our rivers and oceans (and eventually our food and water supply), upgrading treatment plants with this additional step could meaningfully cut the amount of plastic pollution we're exposed to.
Microplastic Pollution in an Urban Wastewater Treatment Plant: Unravelling Problems and Proposing Solutions
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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.
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