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Microplastics in Aquaculture Wastewater in Southeast Asia: Sources, Fate, and Treatment Technologies: A Review
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This review pulls together existing research on tiny plastic particles (microplastics) found in fish and shrimp farm wastewater across Southeast Asia—and the numbers are striking, with some pond sediments containing thousands of plastic bits per kilogram. Since this water often flows into rivers and estuaries that connect to our food and water supply, the findings matter because they highlight a real gap: current treatment methods can filter out a lot of microplastics, but no single method removes them all, and some methods just shift the plastic elsewhere (like into sludge) rather than truly eliminating it. The takeaway is that better, multi-step treat
This review examines microplastics (MPs) in aquaculture wastewater across Southeast Asia, focusing on sources, occurrence pathways, fate during routine farm operations, and treatment opportunities that fit regional realities. The literature shows that aquaculture wastewater behaves as a connected river-canal-estuary system, with intermittent and solids-rich discharges that create short release windows often missed by routine grab sampling. Reported MP levels range from < 1 item/L in some receiving waters to > 10 items/L in aquaculture pond waters, while fishpond sediments in Hanoi, Vietnam, have been reported at 2767 ± 240 to 2833 ± 176 items/kg dry weight. Across reviewed studies, physical capture and separation provide the most consistent control: Sedimentation-based processes show reported removal ranges of 16.5%-98.4%, retention ponds retain about 88%-95% depending on particle size, and rapid sand filtration can reach 84%-98% under tested conditions. However, credible mitigation requires treatment trains rather than single-unit solutions, because many apparent removal pathways transfer MPs into sludge, scum, and backwash. Key gaps include uneven regional data, limited wastewater/sludge evidence, and a need for harmonized operations-aligned monitoring to support technology selection and policy action at scale.
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This review of microplastic pollution in Southeast Asia found widespread contamination in rivers and wastewater treatment plants, with the Philippines and Vietnam having the most contaminated rivers, and fibers and fragments as the dominant shapes composed primarily of polypropylene and polyethylene. The authors identify a significant lack of research on health impacts for both humans and aquatic organisms, and call for standardized sampling methods and stronger regional plastic management policies.
Microplastic Ingestion in Aquatic Animals in South East Asia
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This review examined microplastic ingestion by aquatic animals across Southeast Asia, documenting widespread contamination from environmental breakdown and waste imports, and surveyed physical, chemical, and biological remediation technologies for reducing microplastic concentrations in water.
A comprehensive review on advanced wastewater treatment technologies for microplastic control
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Tiny plastic particles called microplastics are ending up in our water supply, and this review paper looked at how well wastewater treatment plants remove them before water gets released back into the environment. The findings show that while current treatment methods (like filtering, chemical processes, and even plastic-eating bacteria) can remove a good chunk of microplastics, none work perfectly, and some can be costly, energy-intensive, or even break plastics into smaller pieces that are harder to catch. This matters because microplastics that slip through treatment can end up in rivers, soil, and eventually our food and drinking water, so better, cheaper removal technology is
Nanoplastics in water and wastewater: remediation technologies, challenges, and future perspectives
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This review paper examines methods for removing tiny plastic particles, called nanoplastics, from water and wastewater. It finds that techniques like filtration and chemical treatment often just move the particles elsewhere rather than destroying them, while advanced chemical treatments can break them down under certain conditions. The authors say more testing in real water systems is needed to confirm which methods truly remove nanoplastics.
Microplastics in aquatic systems: An in-depth review of current and potential water treatment processes
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This review provides a detailed examination of microplastic contamination in aquatic systems and evaluates current and emerging water treatment technologies for their removal. Researchers assessed methods ranging from conventional coagulation and filtration to advanced techniques like membrane bioreactors and electrochemical processes. The study concludes that while no single technology fully eliminates microplastics, combining multiple treatment approaches offers the most promising path forward.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.