Research Progress on Removal of Microplastics by Filtration in Drinking Water Treatment
Abstract
Microplastics （MPs）， as an emerging contaminant， have garnered significant attention in the field of drinking water research because of their widespread distribution in the environment and potential for biological toxicity. Currently， varying levels of MPs have been detected in drinking water treatment plants （DWTPs）， and media filtration， as a key barrier in the effluent of DWTPs， offers advantages such as easy scalability， low operating costs， green and sustainable purification， and potential for improved removal efficiency of MPs. Moreover， plastic particles can be effectively removed through mechanisms such as screening， filtration， interception， adsorption， size exclusion， cake formation， and electrostatic attraction/repulsion. Therefore， to obtain a comprehensive understanding of the efficacy of media filtration in removing MPs in DWTPs， a thorough investigation of the sources and current status of MPs in DWTPs was initially conducted， an in-depth analysis of the contribution of media filtration in removing MPs was performed， and a brief overview of the mechanisms of media filtration removal of MPs was presented. Additionally， a comprehensive evaluation of the various factors affecting the effectiveness of media filtration in removing MPs was conducted. The results indicate that wastewater treatment plants （WWTPs） are a significant source of MPs in surface and groundwater， that media filtration is notably effective in removing MPs larger than 10 μm， and that its…
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