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61,005 resultsShowing papers similar to Evaluation of the performance of Tehran drinking water treatment plants in removing nanoplastics and microplastics
ClearIdentification of microplastics in conventional drinking water treatment plants in Tehran, Iran
Researchers identified microplastics in three conventional drinking water treatment plants in Tehran, Iran, finding that standard treatment processes do not fully eliminate particles down to 1 micron in size, raising concerns about microplastic exposure through tap water.
Identification, Quantification, and Evaluation of Microplastics Removal Efficiency in a Water Treatment Plant (A Case Study in Iran)
Researchers investigated microplastic occurrence and removal efficiency across treatment stages of a drinking water treatment plant in Iran, finding an influent concentration of 1597.7 MPs/L with an overall removal efficiency of 83.7%, yet still discharging an estimated 2.25 x 10^11 MPs daily into the distribution system, with PP, PE, and PET as the dominant polymers.
Spatial mapping and risk assessment of microplastic contamination in drinking water catchments from north of the Persian Gulf
Researchers mapped microplastic contamination across 11 drinking water treatment plants in Khuzestan Province, Iran, near the Persian Gulf. While treatment reduced overall microplastic levels, fibers made up 71% of particles remaining in treated water, and polyethylene was the dominant type found. The study shows that current water treatment processes are not fully removing microplastics from drinking water, meaning people in the region are consuming small amounts of plastic particles daily.
Microplastic occurrence after conventional and nanofiltration processes at drinking water treatment plants: Preliminary results
Researchers detected microplastics in source river water and finished drinking water at three treatment plants in the Paris region, finding that standard treatment steps including coagulation-flocculation and sand filtration reduced but did not eliminate MPs. Nanofiltration achieved higher removal rates, suggesting advanced filtration is needed for near-complete MP removal from drinking water.
Identification of microplastics and their removal efficiency in drinking water treatment plants in tropical areas: a case study of the Dago Pakar drinking water treatment plant, Bandung, Indonesia
This case study tracked microplastics through different treatment stages at a drinking water plant in Bandung, Indonesia, finding that plastic levels were higher during the rainy season and that particle sizes between 300-1000 micrometers dominated. The treatment plant reduced microplastic counts, but the study assessed how effectively each treatment step performed across seasons and times of day. The findings contribute to understanding how well conventional water treatment removes microplastics in tropical developing-country settings, where infrastructure may differ from Western facilities.
Microplastic Removal in Water Treatment System: A Study of Baghdad’s Wastewater and Drinking Water Treatment Plants
Researchers analyzed microplastic levels at inlets and outlets of two drinking water plants and two wastewater plants in Baghdad, Iraq, characterizing particles by color, shape, size, and composition to assess treatment efficiency and identify residual contamination in treated water.
Removal of microplastics and nanoplastics in water treatment processes: A systematic literature review
Researchers systematically reviewed 103 studies across 26 water treatment plants in 12 countries to assess how well various technologies remove microplastics and nanoplastics from drinking water, finding that while coagulation, filtration, and advanced treatments help, significant gaps remain. The review identifies that no single process achieves complete removal, leaving microplastics as a persistent contaminant in treated water supplies.
Occurrence of microplastics in raw and treated drinking water
Researchers analyzed raw and treated water from three water treatment plants and found microplastics in all samples, though treatment reduced particle counts by roughly 70 to 80 percent. The vast majority of detected particles were smaller than 10 micrometers, a size range often missed by other studies. The findings highlight that while water treatment removes most microplastics, very small particles can still pass through conventional filtration systems.
Investigating microplastics at two drinking water treatment plants within a river catchment
Researchers tracked microplastics through each treatment stage at two Czech drinking water treatment plants on the same river, finding that the downstream plant received far higher raw water concentrations (1,296 vs. 23 particles/L) and that current treatment reduced but did not eliminate microplastics from finished drinking water.
Distribution and abundance of microplastics in urban and industrial wastewater treatment plants in Tabriz metropolis
Researchers assessed microplastic contamination in two urban and five industrial wastewater treatment plants in Tabriz, Iran, a city of 1.6 million people. Urban treatment plants removed less than 10% of microplastics, while industrial plants showed somewhat better removal rates. The study found that existing wastewater treatment infrastructure is largely ineffective at filtering out microplastics, meaning significant quantities are being released into surface waters.
Fate of microplastics in the drinking water production
Researchers tracked the fate of microplastics through drinking water treatment processes, finding that conventional treatment steps like coagulation, sedimentation, and filtration removed the majority of microplastics but did not eliminate them entirely.
Occurrence and fate of microplastics at two different drinking water treatment plants within a river catchment
Researchers investigated the occurrence and removal of microplastics at two drinking water treatment plants located on the same river in the Czech Republic. The study found that microplastics were present in raw water at both facilities and that treatment processes reduced but did not fully eliminate microplastic contamination, with removal efficiency varying by treatment technology.
Occurrence, characterization, and removal efficiency of microplastics in point-of-use drinking water systems: A case study in Dogonbadan, Iran
Researchers sampled inlet and outlet water from point-of-use drinking water systems in Iran and found that rather than removing microplastics, these systems actually increased average concentrations from 11.66 to 20 MPs/L, with polycarbonate and polypropylene as dominant polymer types.
Mass Concentration and Removal Characteristics of Microplastics and Nanoplastics in a Drinking Water Treatment Plant
Researchers measured both microplastics and nanoplastics by mass throughout an entire drinking water treatment plant, finding that raw water contained about 9.6 micrograms per liter of plastic polymers. Treatment reduced this by roughly 92%, but nanoplastics and very small microplastics were harder to remove than larger particles. The study highlights the importance of measuring plastic contamination by mass, not just by particle count, for a more accurate picture of exposure through drinking water.
Occurrence, Fate, and Treatment of Micro/Nano Plastics in Drinking Water Sources
This review examines the occurrence, fate, and treatment of micro- and nanoplastics in drinking water sources, covering how these particles enter water supplies and what treatment technologies exist to remove them. The authors note significant gaps in both detection methods and removal efficiency.
Microplastic removal across ten drinking water treatment facilities and distribution systems
Researchers characterized microplastic removal across ten drinking water treatment facilities and found that conventional municipal treatment achieved greater than 97.5% removal, primarily through granular media filtration or ultrafiltration. Untreated source waters contained between approximately 1,200 and 7,200 microplastic particles per liter, with polypropylene, polyethylene, and polyamide being the most common types. The findings provide valuable data on microplastic exposure through drinking water and the effectiveness of existing treatment processes.
An evaluation of microplastics fate in the wastewater treatment plants: frequency and removal of microplastics by microfiltration membrane
This study assessed microplastic removal efficiency at a wastewater treatment plant in Iran and tested microfiltration membrane performance, finding that the membrane significantly improved microplastic removal beyond conventional treatment steps.
Tracking microplastics contamination in drinking water in Zahedan, Iran: From source to consumption taps
Researchers tracked microplastic contamination through the entire drinking water system in Zahedan, Iran, from raw water sources to household taps. While water treatment plants removed 64-75% of microplastics, tap water actually contained more microplastics than the treated water, likely due to contamination from pipes and plumbing. Children were estimated to consume more microplastics per body weight than adults, highlighting concerns about drinking water as a source of microplastic exposure.
The abundance of microplastic pollution along the Jajroud river of Tehran: Estimating the water quality index and the ecological risk
Researchers measured microplastic abundance and water quality in the Jajroud River, a major drinking water source for Tehran, Iran, across multiple seasons. Microplastic concentrations were linked to proximity to urban and wastewater inputs, and the water quality index declined at sites with higher microplastic pollution.
Do drinking water plants retain microplastics? An exploratory study using Raman micro-spectroscopy
Researchers quantified microplastic retention at a Danish groundwater-fed drinking water treatment plant using Raman spectroscopy, finding that the plant reduced but did not eliminate microplastic particles down to 1 micron in size, with some microplastics present in the treated drinking water output.
Removal efficiencies of microplastics of the three largest drinking water treatment plants in Bangladesh
Researchers evaluated the three largest drinking water treatment plants in Bangladesh and found that while conventional treatment removed a significant portion of microplastics, treated water still contained plastic particles. Removal efficiency varied depending on the treatment process used, with some plants performing better than others. This highlights that current water treatment infrastructure may not fully protect people from microplastic exposure through drinking water.
The abundance, removal efficiency, and characteristics of microplastics in three urban wastewater treatment plants (WWTPs) on the southern coast of the Caspian Sea
Microplastics were assessed in influents and effluents of three wastewater treatment plants on Iran's Caspian Sea southern coast across winter and spring seasons, with removal rates of 71–88% depending on season and treatment method. Fibres dominated MP morphology, and improved treatment efficiency was achieved in spring, likely due to temperature effects on biological processes.
Contamination and Removal Efficiency of Microplastics and Synthetic Fibres in a Conventional Drinking Water Treatment Plant
Researchers found that a conventional drinking water treatment plant in Geneva removed the majority of microplastics from raw water, with coagulation and sand filtration contributing most to removal, though some particles persisted through to finished drinking water.
Exposure to Nano- and Microplastic Contamination in Treated Water in Mahasarakham Province
This study measured nano- and microplastic contamination in treated drinking water in Mahasarakham Province, Thailand, assessing the extent to which water treatment effectively removes plastic particles. Both nano- and microplastics were detected in treated water, indicating incomplete removal by current treatment processes.