Study of pollution resulting from leachate in Rasht solid waste land fill

Study of environmental and sanitary environment of land fill of urban solid wastes is very important due to creation of different pollutions. The most important pollutant, is leachate of the resulting from solid wastes. Solid waste leachate may penetrate in to surface and underground water and pollute these resources. Rasht solid waste land fill has been located in 15 km Rasht at Saravan area. This place near one of the sources of Siahroud River,namely Kacha River. Kacha River joins Siahroud River, and is named Zarjoub. Then it joins Goharroud River in Pirbazar area and enters eastern part of Anzali wetland. This river evacuate the pollution resulting from solid waste leachate to gather with other urban, industrial and agricultural pollutants that it receives with in its route at Anzali wetland. In this research conducted in the year 2007-2006, the statues of Rasht city, and also Kacha River was studied regarding the pollution due to leachate. For this purpose, parameters BOD,DO,PH,TP and COD were studied in two seasons of winter and summer. The results of this research show that all parameters under our study exceed the mounts authorized by environmental protection organization. Furthermore, the pollution resulting from leachate showed remarkable increase in comparison with the results of 1977 experiments