Prof. Hamid Reza Nassery, Eng. Maryam Arab, Dr. Zahra Kayhomayoon,
Volume 18, Issue 2 (Summer 2024)
The study of the aquifer hydrogeochemical processes and the detailed investigation of the groundwater pollutants in order to control the pollution and prevent its environmental consequences are of special importance. The aim of this research is to investigate the effect of the Siahroud River on lead and nitrate contamination of groundwater in Qaimshahr-Joibar plain. For this purpose, two surface water samples were collected from Siahroud River, before and after Qaimshahr city, and 13 groundwater samples were collected from 13 wells, located in the bed of Siahroud river, in three periods during 2019-2020. The of nitrate, lead and dissolved oxygen concentrations of the samples were measured in the laboratory of Mazandaran Regional Water Company. The assessment of the pollution of water resources in the area shows that the discharge of urban, rural and industrial sewage and agricultural drains into the Siahroud River has caused an increase in the concentration of nitrate and lead ions in the groundwater. The Siahroud River has had an impact on groundwater pollution in the Qaimshahr plain in the upstream and some middle parts of the range due to the direction of groundwater flow and the exchange that exists between the river and the aquifer, as well as the direct discharge of pollutant sources to surface water.
