The Effect of the Treated Wastewater on the Pollution of the Diyala River

Abstract

Abstract The project aimed to prepare study comprised to investigate for assessing Diyala River water pollution in the (bottom basin) and to showing chemical effect of the discharged of the water plant. The physical properties included hydrogen number (pH), total dissolved solids (TDS) and electrical conductivity (EC), but in term of chemical properties, samples were chemically analyzed for cat ions and anions (Ca+2, Mg+2, Na+1, K+1, Cl-1, HCO3 -1, SO4 -2 NO3 -1). The results of physical properties had been shown that the pH is within acceptable limits according to the WHO, 2006 guideline and Iraqi guideline 417, 2009 for drinking water, while the TDS, EC values were higher than the acceptable limits of the mentioned guidelines. The average concentrations of the following cat ions and anions: ( Ca+2, a+1, Cl-1, SO4 -2) are higher than acceptable limits, but the average concentrations of anions (Mg+2, K+1, HCO3 -, NO3 -1) are within acceptable limits of WHO, 2006 guideline and Iraqi guideline, 2009 for drinking water. The dominated cautions of Diyala River water are Na+1, Ca +2 as well as the dominated anions are Cl-1, SO4 -2 here as the evaporation process is dominating in the river. the results showed that the river water is very hard and most of the physical and chemical properties are higher than acceptable limits, so it is unsuitable for drinking. From calculating sodium adsorption ratio (SAR) of river water was suitable for irrigation and it is appear to be classified as S1 Level, which is no harmful regarding sodium. Result indicated effect of tracers, the influences of Treatment of treated wastewater and human activities, all these factors contributed for worsen the quality of Diyala river water.