This paper DOI: 10.5281/zenodo.4005959

Impact of Leachate Percolation on Groundwater Quality near the Municipal Open Dumpsite (Jam Chakro): A Case Study of Surjani Town, Karachi, Pakistan

 

 

Adnan Khan^1*, Sumaira Asif Khan¹, Zubaid Saeed², Bisma Naz¹

¹Department of Geology, University of Karachi, Pakistan

²Department of Geology, Federal Urdu University of Arts Science and Technology, Karachi Campus, Pakistan

*Corresponding author Email: adkhan@uok.edu.pk

Abstract: Present study is aimed at assessment of landfill leachate migration impact on groundwater quality of Surjani Town. Groundwater samples (n=28) were collected at various depths (35-220m) and analyzed for various physicochemical characteristics. Data revealed that groundwater pH is highly fluctuating (ranges= 6.5 - 7.6; mean: 7.0) where about one third of total samples are acidic (range= 6.5 – 6.91). Remarkably high TDS content (range: 609 - 28100 mg/l; mean: 11946 mg/l) is reported. Major cations and anions vary in the order of Na (7293mg/l) > Ca (1049 mg/l) > Mg (998 mg/l) > K (44 mg/l) and Cl (5513 mg/l) > SO₄ (2942 mg/l) > HCO₃ (1408 mg/l) > NO₃ (17 mg/l) respectively. Results of principal component analysis suggest landfill leachate percolation and mixing followed by water rock interaction in groundwater of study area. Extremely high concentration of measured parameters concluded that groundwater of Surjani Town is subjected to anthropogenic pollution by leaching of contaminants from Jam Chakro landfill site.

Keywords: Landfill, leachate, Jam Chakro, groundwater pollution, Surjani Town.

 

International Journal of Ground Sediment & Water

ISSN: 2372-0743 (print) ISSN: 2373-2989 (on line)

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