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Leachate Characterization and Management at Sisdol Landfill Site in Nepal

Author

Listed:
  • Shankar Shrestha

    (Nepal Development Research Institute (NDRI), Lalitpur, Nepal)

  • Monica Maharjan

    (Murdoch University, Perth, Western Australia, Australia)

  • Nawa Raj Khatiwada

    (Nepal Development Research Institute (NDRI), Lalitpur, Nepal)

  • Bijay Thapa

    (Soil, Water and Air Testing Laboratories P. LTD., Kathmandu, Nepal)

Abstract

Sisdol Landfill Site (SLS) receives over 800 tons of solid wastes daily generated from eighteen municipalities of Kathmandu Valley, Nepal. Leachate management is an urgent issue at the SLS where current facilities of leachate treatment are non-engineered. The untreated leachate is discharged directly into nearby Kolpu River resulting in serious environmental and health concerns. In this context, the present study investigated the physico-chemical characteristics of the landfill leachate collected in the dry season (February 2018). The analysis showed high values for total nitrogen (3226–3536 mg/L), ammonia nitrogen (3022–3268 mg/L), organic dry matter (6498–8980 mg/L), BOD (3600–3700 mg/L), COD (7392–7560 mg/L), total solids (17988–18130 mg/L) and iron (11.33–13.31 mg/L). Based on the observed leachate quality and review of the available treatment technologies, the present study proposed combinations of various low-cost leachate treatment options to improve the overall leachate quality. However, pilot scale studies are recommended prior to up scaling the technologies to the entire SLS.

Suggested Citation

  • Shankar Shrestha & Monica Maharjan & Nawa Raj Khatiwada & Bijay Thapa, 2020. "Leachate Characterization and Management at Sisdol Landfill Site in Nepal," Journal of Development Innovations, KarmaQuest International, vol. 4(1), pages 119-132, July.
    • Handle: RePEc:kqi:journl:2020-4-1-8
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    File URL: https://karmaquest.org/journal/index.php/ILGDI/article/view/62/45
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    References listed on IDEAS

    as
    1. Asian Development Bank (ADB), 2013. "Solid Waste Management in Nepal: Current Status and Policy Recommendations," ADB Reports RPT135798, Asian Development Bank (ADB), revised 16 Dec 2013.
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    More about this item

    Keywords

    Leachate Quality; Leachate Treatment; Sisdol Landfill Site; Solid Waste Management;
    All these keywords.

    JEL classification:

    • Q25 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Water
    • Q53 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Air Pollution; Water Pollution; Noise; Hazardous Waste; Solid Waste; Recycling

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