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This study examined the fate of MPs in an institutional WWTP situated on an academic campus in Jaipur, India. The research assessed MP presence at various stages of the treatment process, including the inlet (IN), removal efficiency post-settler (SET), and outlet (OUT), as well as their accumulation in sludge. The quantity, colour, and size of MPs in the gathered samples were examined. The polymer composition was analyzed using the Fourier Transform Infrared Microscope System (FT-IR). The study found that the number of detected MPs was 53.11 ± 4.89 MPs/L at the IN, 20.88 ± 3.26 MPs/L after the SET, and 3.64 ± 0.71 MPs/L at the OUT, resulting in a total removal efficiency of 88.6%. However, considering the total volume of wastewater treated daily in the plant and the sludge being disposed of in the open, the potential daily release of MPs to the environment was estimated to be millions of MPs per day. The results emphasize that, given the potential reuse of treated wastewater and indiscriminate disposal of WWTP sludge in open areas, these plants could be a notable source of MPs to agroecosystems.

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Microplastics in Institutional Wastewater Treatment Plant: Abundance, Characterization, Removal

  • 会议论文

  • 发表日期：

    2025年

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  • Yash Choudhary,
  • Ayushi Chaudhary,
  • Anirban Dutta,
  • Amit Kumar

摘要

This study examined the fate of MPs in an institutional WWTP situated on an academic campus in Jaipur, India. The research assessed MP presence at various stages of the treatment process, including the inlet (IN), removal efficiency post-settler (SET), and outlet (OUT), as well as their accumulation in sludge. The quantity, colour, and size of MPs in the gathered samples were examined. The polymer composition was analyzed using the Fourier Transform Infrared Microscope System (FT-IR). The study found that the number of detected MPs was 53.11 ± 4.89 MPs/L at the IN, 20.88 ± 3.26 MPs/L after the SET, and 3.64 ± 0.71 MPs/L at the OUT, resulting in a total removal efficiency of 88.6%. However, considering the total volume of wastewater treated daily in the plant and the sludge being disposed of in the open, the potential daily release of MPs to the environment was estimated to be millions of MPs per day. The results emphasize that, given the potential reuse of treated wastewater and indiscriminate disposal of WWTP sludge in open areas, these plants could be a notable source of MPs to agroecosystems.