Alam Pervez, Khan Afzal Husain, Islam Raisul, Sabi Ehab, Khan Nadeem A, Zargar Tasneem Imtiyaz
Department of Civil Engineering, Baba Ghulam Shah Badshah University, Jammu, Jammu and Kashmir, India.
Civil Engineering Department, College of Engineering, Jazan University, P.O. Box. 706, 45142, Jazan, Saudi Arabia.
Sci Rep. 2024 Apr 17;14(1):8910. doi: 10.1038/s41598-024-58693-5.
Landfill leachate forms when waste-inherent water and percolated rainfall transfer are highly toxic, corrosive, acidic, and full of environmental pollutants. The release of leachate from municipal solid waste (MSW) landfill sites poses a severe hazard to human health and aquatic life. This study examined the impact of leachate from Delhi's Ghazipur landfill on the nearby groundwater quality. Analysis of leachate samples was done to determine various parameters such as total dissolved solids (TDS), hardness, alkalinity, electrical conductivity, pH, BOD, COD, nitrate, sulphate, chloride and iron, and presence of coliform bacteria. Significant dissolved elements (22,690-34,525 mg/L) were observed in the samples, indicated by the high conductivity value (1156-1405 mho/cm). However, a stable pH range (6.90-7.80) of leachate samples was observed due to high alkalinity concentrations between 2123 and 3256 mg/L. The inverse distance weighing (IDW) interpolation tool from QGIS 3.22.7 developed spatial interpolated models for each parameter across the Ghazipur area. The IDW interpolated graphs of various parameters over the whole study area confirmed these contaminations. In addition, leachate and groundwater samples were physio-chemically analyzed, and temporal fluctuation in landfill waste has also been studied. The temporal fluctuation results showed that when heat is produced, transmitted, and lost throughout the waste system, the maximum temperature position fluctuates over time. The findings of this study highlight the critical importance of landfill management in reducing groundwater contamination from MSW leachate.
当垃圾中固有的水分和渗透的降雨形成的渗滤液具有高毒性、腐蚀性、酸性且充满环境污染物时，就会产生垃圾渗滤液。城市固体废弃物（MSW）填埋场渗滤液的排放对人类健康和水生生物构成严重危害。本研究考察了德里加济布尔垃圾填埋场的渗滤液对附近地下水水质的影响。对渗滤液样本进行分析，以确定各种参数，如总溶解固体（TDS）、硬度、碱度、电导率、pH值、生化需氧量（BOD）、化学需氧量（COD）、硝酸盐、硫酸盐、氯化物和铁，以及大肠菌群的存在情况。样本中观察到显著的溶解元素（22,690 - 34,525毫克/升），高电导率值（1156 - 1405毫欧/厘米）表明了这一点。然而，由于碱度浓度在2123至3256毫克/升之间，渗滤液样本的pH值范围稳定在6.90 - 7.80之间。来自QGIS 3.22.7的反距离加权（IDW）插值工具为加济布尔地区的每个参数建立了空间插值模型。整个研究区域内各种参数的IDW插值图证实了这些污染情况。此外，还对渗滤液和地下水样本进行了物理化学分析，并研究了垃圾填埋场废弃物的时间波动情况。时间波动结果表明，当热量在整个废物系统中产生、传输和散失时，最高温度位置会随时间波动。本研究结果突出了垃圾填埋场管理在减少城市固体废弃物渗滤液对地下水污染方面的至关重要性。
