Applying Mathematical Models to Study the Environmental Pollution Aspects of the Duhok Valley, Kurdistan Iraq
Examinations and tests were conducted for the current study to evaluate the environmental reality of... See more
Examinations and tests were conducted for the current study to evaluate the environmental reality of the Duhok Valley and the role of some plants growing on its side in treating pollutants, which transport the water of Duhok Dam and the various wastewater of the city to flow into the Mosul Dam Lake, transporting pollutants to it. As the water is used during its course to irrigate the crops scattered on both sides of the valley and to water the livestock and poultry sometimes. Six sites were identified for collecting water samples, starting from February 2021 until January 2022, using clean Poly ethylene terephthalate bottles that were washed with sample water several times before filling them. Samples for dissolved oxygen and biochemical oxygen demand were also collected in special bottles of 100 ml with a tight stopper. With the least possible aeration according to the internationally approved methods, water samples, soil, benthic sediments, and plants were collected seasonally to determine heavy metals from three sites (N1, N3, N6). Physical and chemical tests were conducted to estimate the temperature, electrical conductivity, pH, total hardness, alkalinity, negative and positive ions, and some heavy elements (Pb+2, Cu+2, Co+2, Ni+2), in addition to estimating parameters for irrigation such as sodium adsorption ratio (SAR), residual sodium carbonate (RSC), percentage of sodium (% Na), permeability index (PI), Kelly ratio (K.R), and latent salinity (PS).
2023