Physicochemical assessment of leachate from Pokhara landfill site and its impact on the quality of Seti River water, Nepal

Abstract

The management of municipal solid always poses serious environmental problems on land, air, and groundwater, especially in the case of developing countries. The characterization and assessment of leachates are necessary to understand the water quality in the urban region as well as has enormous importance in sustaining the livelihoods of people in the riverine environment maintaining the ecological balance. Landfill leachate contains thousands of complex components, which contaminate the nearby water bodies, and communities with several hazardous ingredients. The present study was conducted to assess the influence of landfill leachates on the quality of Seti River water. The samples were collected from four stations (Tatopani, Ramghat, Landfill, Below landfill, and Kotre). The samples were analyzed for pH, total hardness, dissolved oxygen, biochemical oxygen demand, turbidity, total dissolved solids, electrical conductivity (EC), Cl-, NH3, and PO43- by standard methods. The pH and EC were measured in situ whereas other parameters were analyzed in the laboratory adopting standard protocols. The physicochemical parameters of river water and that of leachates were compared to monitor the level of contamination. The research reveals the landfill to have insignificant pollution of water on matching the parameters with World Health Organization (WHO) guideline values. Regular monitoring of the quality of river water and sustainable management of solid waste is essential for the ecological quality and integrity of the environment in the region. Scientific information obtained by this study could contribute to policymakers for the sustainable management of water quality and landfill in the downstream and urban segments of the river basins.

Comparative Study of Physico-Chemical Parameters of Karra, Rapti and Samari River Water of Hetauda

“…The value of dissolved oxygen is used to measure the extent of pollution by organic matter, demolition of the organic matter and water's self-purification. (Khanal, Adhikari, Paudel, & Adhikari, 2021). The aquatic life cannot sustain below the limit of WHO guideline which is 5 mg/L.…”

Challenges of Consumer Culture and Solid-waste to the Environment Protection in Pokhara Metropolitan City, Nepal

“…The study has revealed that the average waste generation per household, including plastics, paper products, rubber, and textile, is 115 gm per day. Furthermore, the disposal management of municipal solid-waste has become an issue of challenge and poses serious environmental problems such as groundwater, air, land, and the like for the government authority of developing countries (Khanal et al, 2021). This prior literature has a clear gap in the interconnection between consumer culture and solid-waste, which could create challenges in environmental issues in an urbanized city like Pokhara.…”

Analisis Indeks Pencemaran Air Permukaan dan Air Tanah di Desa Sekitar TPA Regional Kebon Kongok

“…Pemantauan rutin kualitas air sungai dan pengelolaan limbah yang sesuai dengan baku mutu sebelum dibuang ke badan air sangat penting untuk mempertahankan kualutas ekologis lingkungan. Informasi ilmiah terkait kualitas air lindi dan air permukaan dapat memberikan kontribusi bagi pembuat kebijakan dalam pengelolaan kualitas air dan TPA yang berkelanjutan di segmen hilir dan DAS bagian perkotaan (Khanal et al, 2021).…”