We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Microplastics in an industrial zone wastewater treatment plant: Characterization, fate, and risk assessment
AI summary Read the abstract
Most studies on microplastics in wastewater treatment plants focus on municipal sewage, but this study examined an industrial-zone treatment plant serving textile, plastics recycling, and furniture sectors in Turkey. Microplastics were found throughout the system, with sludge containing the highest concentrations (3,734 particles/L), and even after treatment, nearly 1.5 billion microplastic particles were discharged into a river each day — a river that feeds agricultural irrigation. The findings show that conventional wastewater treatment is insufficient for industrial effluents, and that tertiary filtration is needed to prevent significant plastic contamination of soils and waterways.
The majority of research on microplastic (MP) characterization and removal has focused on municipal wastewater treatment plants (WWTPs). Hence, this study was performed at an industrial zone WWTP with sectors of textile, plastic recycling, furniture, etc. Three monthly sampling campaigns were conducted to analyze the MPs (abundance, shape, color, size, polymer type), and to investigate their fate and removal rate in the WWTP. Furthermore, the environmental risk assessment using EPI Suite™ modeling was conducted for common MP polymer types. The results indicated that the highest MP concentration was detected in the sludge sample (3,734 MP/L), while the lowest one was observed in the effluent sample (52 MP/L). While large MPs (5 mm - 425 µm) were removed by primary treatment processes, smaller MPs (250-125 µm) showed a tendency for accumulation in the sludge. The most dominant MP shapes were fiber and fragment in both wastewater and sludge samples, while the most dominant polymer types were polypropylene (38%), polyethylene (24%), and polyethylene terephthalate (11%). The environmental risk assessment reveals that polyvinyl chloride, polyethylene terephthalate, and polystyrene, present in minimal quantities in this study, are more likely to impact the growth of living organisms significantly compared to more common polymer types like polypropylene and polyethylene. Although the overall MP removal efficiency of the industrial zone WWTP was 88%, a significant quantity of MPs (1.5x109 MP/day) was still discharged into the Kızılırmak river that is mostly used for irrigation. Effective control/reduction of MP discharge necessitates the implementation of tertiary treatment processes in industrial zone WWTPs to prevent soil pollution.
More Papers Like This
Microplastics in municipal wastewater treatment plants in Turkey: a comparison of the influent and secondary effluent concentrations
AI summary Read the abstract
Microplastics were detected in both influent and secondary effluent at two wastewater treatment plants in Turkey, with fibers as the predominant type in both streams. The study confirms that Turkish wastewater systems discharge substantial numbers of microplastic particles into receiving waters, consistent with findings from other countries.
Presence of Microplastic in Erzurum Urban Wastewater Treatment Plant
AI summary Read the abstract
Researchers investigated microplastic presence at the inlet and outlet of the Erzurum Urban Wastewater Treatment Plant in Turkey, finding average concentrations of 36,400 MP/m3 in influent and 2,875 MP/m3 in effluent. Tertiary treatment achieved over 90% removal efficiency, while primary and secondary treatment alone proved insufficient for effective microplastic removal.
The Abundance and Characteristics of Microplastics in Central Industrial Wastewater Treatment Plants
AI summary Read the abstract
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.
Characterization of microplastics in an industrial wastewater treatment plant: sector-specific loads, removal efficiency, and contaminant associations
AI summary Read the abstract
Researchers studying an industrial wastewater plant in Iran found that even though it filters out roughly 76-90% of microplastic particles, it still releases hundreds of millions of tiny plastic bits into waterways every day, mostly from textile and cellulose factories. Even more concerning, these microplastics had heavy metals like cadmium and zinc stuck to their surfaces, meaning they can act as "hitchhikers" that carry toxic substances further into rivers, soil, and potentially our food and water supply. This suggests that simply treating wastewater at the end of the pipe isn't enough, factories need targeted solut
Microplastics in industrial wastewater treatment plant: Quantification, identification and ecological risk assessment
AI summary Read the abstract
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.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.