A Study of the Effects of Purkan Village Wastewater Refinery on Qualitative Parameters of Karaj River
Subject Areas :Faezeh Hosseini 1 , Amir hesam Hasani 2 , Amir hossein Javid 3 , Mojtaba Sayadi 4
1 - M.Sc. Holder of Environment Science, Faculty of Environment and Energy, Islamic Azad University, Science and
Research Branch of Tehran
2 - Associate Professor of Faculty of Environment and Energy, Islamic Azad University, Science and Research Branch
of Tehran
3 - Associate Professor of Faculty of Environment and Energy, Islamic Azad University, Science and Research Branch
of Tehran
4 - MSc. Holder,Organization of Water and Wastewater of the villages of Tehran Province.
Keywords: village, rural wastewater treatment plant , Karaj river , polluted effluent , fecal coliforms , Purkan,
Abstract :
Today the River of Karaj is exposed to all kinds of pollutions and destruction of ecosystem because of thedestructive effects of Tehran, a city with millions of residents. So it is important to examine the quality of thewater of this river to collect information about the current situation. The objective of this study is to find out therole of the Purkan sanitary wastewater refinery on the quality of the water of the river. In current study, sampleswere collected from four stations: into, out of, before, and after the refinery, in seasonal form, four stages.Concentration of NO3,NH3,PO4,BOD5,COD,TSS,pH indices were tested according to methods suggested bystandard methods reference. Considering the results of the samples, data analysis was done using statistics. Theresults of physical , chemical and microbial analyses of the samples show that the refinery has no good role indecreasing basic parameters such as COD, TSS and FC (specially in summer season). In many cases, theparameters were more than the limit. The water in the river has an almost fixed condition, so; entrance of thewastewater into Karaj River does not show a great negative effect. As a result, it seems necessary to make aprogram to find a solution to remove the problems. Prevention of the direct entrance of the wastewater into theriver, modification of refinery function, optimization of filteration, and the use of wastewater in artificialirrigater may help remove these problems.
