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20 resultsShowing papers similar to Occurrence and Removal Efficiency of Microplastics in Four Drinking Water Treatment Plants in Zhengzhou, China
ClearOccurrence and fate of microplastics from a water source to two different drinking water treatment plants in a megacity in eastern China
Researchers tracked microplastics through two drinking water treatment plants in a major Chinese city and found that treatment removed 73-83% of microplastics from the water. However, some microplastics were still present in the treated drinking water, and chlorine disinfection actually increased polystyrene levels. The smallest particles (2-5 micrometers) were the hardest to remove, which is a concern because smaller particles may be more easily absorbed by the human body.
Occurrence and identification of microplastics in tap water from China
Researchers analyzed 38 tap water samples from cities across China and found microplastics in all of them, with concentrations averaging around 440 particles per liter. Most particles were smaller than 50 micrometers, and the dominant types were polyethylene and polypropylene fragments. The findings highlight that drinking water treatment plants face a significant challenge in addressing microplastic contamination in the water supply.
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.
Occurrence and Removal of Microplastics in Tertiary Wastewater Treatment Plants: A Case Study of Three Plants in Zhengzhou, China
Researchers studied microplastic occurrence and removal efficiency at three wastewater treatment plants in Zhengzhou, China. The study found influent concentrations ranging from 147 to 289 particles per liter, with removal efficiencies between 76% and 91%, indicating that while treatment plants significantly reduce microplastic levels, substantial quantities still pass through to receiving waters.
Presence of microplastics in drinking water from freshwater sources: the investigation in Changsha, China
Researchers measured microplastic abundance at multiple stages of a drinking water supply chain in Changsha, China — from source freshwater through treatment to household taps — finding that water treatment reduced MP concentrations by more than 85% but tap water still contained an average of 344 particles per liter.
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.
Identification and Quantification of Microplastics in Potable Water and Their Sources within Water Treatment Works in England and Wales
Researchers tested eight water treatment works in England and Wales and found that conventional treatment processes removed 99.99% of microplastics, reducing raw water concentrations of about 5 particles per liter to near-zero in drinking water. Polyethylene, PET, and polypropylene were the most common polymers found in the raw water supply.
Identification 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.
Tracking Microplastics Contamination in Drinking Water Supply Chain in Haikou, China: From Source to Household Taps
Researchers tracked microplastic contamination throughout the entire drinking water supply chain in Haikou, China, from source water to household taps. They found that while water treatment reduced some microplastic content, treated water actually showed higher concentrations than raw water, suggesting contamination during the treatment process itself. The study provides a health risk assessment indicating that microplastic exposure through tap water warrants continued monitoring.
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.
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.
Microplastics and nanoplastics contamination in raw and treated water
Researchers analyzed 189 samples of raw, tap, and bottled drinking water for micro- and nanoplastic contamination. They found plastic particles in every sample tested, with raw water sources containing the highest concentrations and treated tap water containing the lowest, though contamination was never fully eliminated. The study suggests that current water treatment processes reduce but do not completely remove plastic particles from drinking water.
Microplastic removal efficiency in a megacity water treatment plant and dynamics in the distribution system
This study tracked microplastics through a megacity drinking water treatment plant and urban distribution network, finding significant MP removal through treatment but detecting residual contamination in distributed water, raising public health concerns in rapidly growing urban areas.
Occurrence and Source of Microplastics Contamination in Drinking Water and Performance of Water Treatment Plants in Removing Microplastics
This review summarizes evidence that microplastics are present in both tap water and bottled water worldwide, with bottled water frequently contaminated by particles shed from the plastic packaging itself. Conventional water treatment plants remove between 40% and 93% of microplastics but cannot eliminate them entirely, meaning treated drinking water still carries measurable plastic loads. The chapter highlights the irony that plastic packaging intended to deliver clean water is itself a major source of microplastic contamination.
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.
Removal of microplastics via drinking water treatment: Current knowledge and future directions
This review examines what is currently known about microplastics in drinking water systems and how well existing water treatment processes remove them. Researchers found that while conventional treatment steps like coagulation and filtration do reduce microplastic levels, significant amounts can still persist through to tap water. The study calls for more research into optimizing treatment processes and developing monitoring strategies specifically targeting microplastic contamination in drinking water.
Occurrence and removal of microplastics in an advanced drinking water treatment plant (ADWTP)
Microplastics were tracked through each treatment stage of an advanced drinking water treatment plant in China, finding that coagulation/sedimentation removed ~40–55% and granulated activated carbon filtration further reduced concentrations. The study demonstrates that advanced treatment can substantially reduce but not eliminate microplastics from drinking water.
Performance of Conventional Drinking Water Treatment Plants in Removing Microplastics in East Java, Indonesia
This Indonesian study tested two conventional drinking water treatment plants in East Java for their ability to remove microplastics, finding that full multi-stage treatment achieved significant reduction but did not eliminate all particles. The results show that conventional water treatment partially protects consumers but may not prevent all microplastic ingestion through drinking water.
Microplastics in Drinking Water:Current Knowledge, Quality Assuranceand Future Directions
This review synthesizes current knowledge on microplastics in drinking water, covering their occurrence in source waters, behavior during treatment processes, and potential health implications. Researchers found that while drinking water treatment plants remove a portion of microplastics, standardized quality assurance methods are still lacking. The study calls for improved monitoring protocols and treatment technologies to better address microplastic contamination in tap water.
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.