Document Type : REVIEW PAPER
Department of Environmental Science and Engineering, Marine Science and Technology Faculty, North Tehran Branch, Islamic Azad University, Tehran, Iran
: Department of Environmental Science and Engineering, Marine Science and Technology Faculty, North Tehran Branch, Islamic Azad University, Tehran, Iran
present study is an experimental-laboratory study which the data collection is based on the collected data of field and documentation studies. this research, the quality process of Kan River's resources based on the examined results of qualitative parameters will be analyzed in details. For this purpose, first of all, the results of the analysis of the collected samples for one year were carried out to measure the physical and chemical parameters in 3stations.
Heavy metals parameters are turbidity, Oxygen required for chemical usage, Oxygen required for biological usage, Phosphate, Nitrate, total soluble solids, electrical conductivity, PH, total Coliform and gastrointestinal Coliform, and Anions and Cations, according to the above parameters compared to the presentation of the process of quality changes along the river course and its impacts on agricultural and drinking uses are discussed. The results indicate that according to the results of the qualitative status of the water resources of the river, the range of the project due to the presence of heavy metals (Mercury, Cadmium, Manganese, and Chromium) which are above the limitations for agricultural use, the accumulation of heavy metals in the soil causes pollution of agricultural lands And through the soil-plant-animal cycle it may be at a human toxicity threshold. Also, the quality status of water resources of rivers in the project area is in moderate to good levels in terms of chemical parameters for drinking, but due to the quality of the heavy elements and the biological status and water pollution, drinking is not feasible