Numerical Modelling of Groundwater Flow and Contamination Transport (TDS) in Kaniqurzala Area- Central Basin – Erbil City- Kurdistan - Iraq

Noor Khalid, Yousif Yashooa, D. Mawlood
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Abstract

Modeling groundwater is an effective method for predicting the hydrological characteristics of an aquifer and estimating the influence of pollution transport in groundwater. The objective of this study is to analyze groundwater flow and contaminant transport (TDS) over 50 years in the Kaniqurzhala region - Erbil City using GMS (Groundwater Modeling System) version 10.6. In April and May of 2022, the static water table for 27 wells was measured in a 60.80 km2 research area. A sample of landfill leachate, considered a point source of pollution in the research region, is collected. The dimensions of the model domain's 80 columns and 76 rows are (100m x 100m). The MODFLOW, MODPATH, and MT3DMS codes are utilized for modeling groundwater flow and pollution transfer. There was a strong connection between the measuring head and the estimated head, and the model's coefficient of determination was R 2 = 0.9935. After calibration, the hydraulic conductivity values for layers 1, 2, and 3 are (3.647222 x10 -6 m/s, 2.8935 x10 -9 m/s, and 3.24074 x10 -6 m/s, respectively). TDS concentrations travel upstream and downstream of landfills and pollute many wells in the research region.
卡尼库扎拉地区-中部盆地-埃尔比勒市-库尔德斯坦-伊拉克地下水流动和污染运移数值模拟
地下水模型是预测含水层水文特性和估计地下水污染运移影响的有效方法。本研究的目的是使用10.6版GMS(地下水建模系统)分析50年来Kaniqurzhala地区-埃尔比勒市的地下水流量和污染物传输(TDS)。2022年4月和5月,在60.80平方公里的研究区域内测量了27口井的静态地下水位。收集了被认为是研究区域点污染源的垃圾渗滤液样本。模型域的80列和76行的尺寸为(100m x 100m)。利用MODFLOW、MODPATH和MT3DMS代码对地下水流动和污染转移进行建模。测量水头与估算水头之间存在很强的相关性,模型的确定系数为R2=0.9935。校准后,第1层、第2层和第3层的导水率值分别为(3.647222 x10-6 m/s、2.8935 x10-9 m/s和3.24074 x10-6 m/s)。TDS浓度在垃圾填埋场的上下游流动,污染了研究区域内的许多水井。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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64
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8 weeks
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