| چکیده انگلیسی مقاله |
In attention to healthy risks of effluent discharge of wastewater from treatment plants to water sources and use in agriculture , this study was carried out for quality assessment of effluent discharge from Serkan wastewater treatment plant in Serkan , Hamadan, Iran in summer 1999. For this investigation, according to Iranian EPA standard’ s procedure , the mixing sampling method was carried out from effluent over 24 hour , and some of physical ,chemical and biological characteristics of sample measured by standard methods. According to the results of this research the mean of BOD, COD, TSS, NO3, P were 49,84,237,57,11 mg/l respectively and amounts of egg and cyst of parasites were 331 N/L. However, the results showed that amounts of some of the characteristics including: TDS, Turbidity, Nitrite and heavy metals were in acceptable range of national and international standards. But the amounts of other characteristic including: BOD, COD, TSS, NO3 , P, and choliforms index, Ascaris eggs, trichocephal, Giardia cyst, Amibiacoli were more than standards. |