Today, the most important step to control sewage pollutions and reuse of wastewater, is to construct sewage treatment plants and closely monitor their performance.In this research, the aim of this study was to investigate the environmental impacts of sewage treatment ef More
Today, the most important step to control sewage pollutions and reuse of wastewater, is to construct sewage treatment plants and closely monitor their performance.In this research, the aim of this study was to investigate the environmental impacts of sewage treatment effluent in Kermanshah on some physico-chemical parameters of GharasoopermanentRiver so,changes of these parameters were investigated in Gharasooriver water samples at different time intervals.The average of changes in these parameters were compared in dry season with the variation of this parameter in the wet season (November).Investigation of daily changes in acidity of samples in different parts of the wet season (November) of the year 95 illustrate the fact that the processes of neutralizing the acidity of the effluent have an effect on the process of dramatic changes in this parameter and shows a decrease in the acidity in the output samples in respect of input samples.Also, the results of measurement of the biological oxygen demand of samples show that sewage treatment processes have been effective in removing various sludge and various microorganisms.The results of measuring the amount of total suspended solids in water samples indicate effective efficiencies and the proper functioning of the wastewater treatment process.Measuring the temperature of water samples at 3 different points shows that in these 3 points the water temperature was constant and has only shown a slight change at different times. The amount of nitrate in the samples and the amount of dissolved oxygen from the inlet point of the refinery to the outlet point has been increasing. Daily changes in alkalinity and acidity, the amount of biological and chemical oxygen demand and the amount of phosphorus at the inlet point of the refinery to the outlet point and samples from distant distances have a decreasing trend.
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