Faculty of Water Supply and Environmental Engineering, Arba Minch Water Technology Institute, Arba Minch University, Arba Minch, Ethiopia.
Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Via Branze 43, 25123, Brescia, Italy.
Environ Monit Assess. 2022 Jun 30;194(8):545. doi: 10.1007/s10661-022-10217-2.
Municipal solid waste disposed of in illegal dumpsites pollutes the surface and groundwater. However, accurately determining these pollution levels is typically challenging for practitioners and decision-makers in developing countries. The purpose of this study is to use the leachate pollution index (LPI) to assess the contamination potential of uncontrolled dumping sites along the course of the Kulfo River in Arba Minch, Ethiopia. The comprehensive pollution index (CPI) approach was also utilized to assess the suitability of Kulfo River water quality for aquatic species. Leachate samples were collected from four uncontrolled dumping sites along the Kulfo River's course and analyzed for fifteen leachate characteristics necessary to quantify the LPI sub-indices. Water samples were taken from three monitoring stations along the river and examined for aquatic species suitability. When the leachate parameters were compared to the Indian limit for discharge of treated leachate, it was found that dumping sites posed a considerable risk of pollution to adjacent water resources. The overall LPI ranged from 23.34 to 27.35, which is higher than the discharge standard LPI of 5.69, indicating that dumping sites can threaten the surrounding water resources and human health. Based on the rating scale of CPI, at all monitoring stations, the river resulted severely polluted. Finally, appropriate strategies to reduce the pollution and the related mismanagement of solid waste were discussed. Combining LPI and CPI methods can represent a crucial tool for experts and decision-makers in developing countries to evaluate the pollution potential of dumping sites and water resource monitoring.
非法垃圾倾倒场处理的城市固体废物会污染地表水和地下水。然而，发展中国家的从业者和决策者通常难以准确确定这些污染水平。本研究旨在使用浸出液污染指数（LPI）评估埃塞俄比亚阿尔巴明奇库尔福河沿岸失控垃圾倾倒场的污染潜力。还利用综合污染指数（CPI）方法评估库尔福河水质量对水生物种的适宜性。从库尔福河沿岸的四个失控垃圾倾倒场采集浸出液样本，并分析了十五种浸出液特征，这些特征是量化 LPI 子指数所必需的。从河流的三个监测站采集水样，检查水生物种的适宜性。当浸出液参数与印度处理后浸出液排放限值进行比较时，发现倾倒场对附近水资源造成了相当大的污染风险。总体 LPI 范围为 23.34 至 27.35，高于 5.69 的排放标准 LPI，表明倾倒场可能威胁到周围的水资源和人类健康。根据 CPI 的评分标准，在所有监测站，河水都受到严重污染。最后，讨论了减少污染和相关固体废物管理不善的适当策略。结合 LPI 和 CPI 方法可以为发展中国家的专家和决策者提供一种重要工具，用于评估倾倒场的污染潜力和水资源监测。
