Characterizing Seasonal Variation in Landfill Leachate Using Leachate Pollution Index (LPI) at Nam Son Solid Waste Landfill in Hanoi, Vietnam

The improper treatment of landfill leachates is one the major problems associated with waste landfilling and causes serious environmental pollution at sites their surroundings. To develop a suitable leachate system to minimize risk pollution, it important characterize seasonal temporal variations leachates. This study investigated quality Nam Son in Hanoi, Vietnam 2017–2019 characterized potential risks using index (LPI). results this showed that variation overall LPI during monitoring period was small range 20–25 (values 2.5 times higher than maximum permissible limits National Technical Regulation on Industrial Wastewater). sub-indices attributed organic inorganic pollutants were components LPI. Especially, annually averaged values 7.7 limits, suggesting pollutants, such as ammonium-nitrogen (NH4+–N) total nitrogen (TN), highly required prevent surrounding site.