Effect of The Landfill Leachate to quality of Groundwater of Bojnourd City With the Approach Standard Landfill Design or Replacement of Anaerobic Digester

One of the factors that play a significant role in the contamination of ground water resources, solid waste and urban waste. 200 tons of waste is generated daily in the city Bojnourd and the amount of waste causes the release of 33 million liters of leachate per year. That the lack of proper waste disposal systems and landfills poor design caused concern about the influence of hydrocarbons and heavy metals into groundwater is has been. In this study, 2 wells upstream and 2 wells downstream in the side of landfill were sampled. The average concentration of variables NH3¡ NO3-¡ PO43-¡ SO42-¡ Cl¡ Mg2¡ K æ Na in the upstream wells Is measured respectively, 0.02, 20.27, 0.17, 141.2, 89.8, 38.52, 2.8, 27.6 mg/l and wells downstream, 08.8, 51.25, 0.5, 200.1, 182.2, 71.32, 7.1, 218.8 mg/l. Due to the high concentration of ppllutants of NO3-¡ PO43-¡ Mg2¡ K¡ Na æ TDS to a standard amount can be found that Influence of waste landfill leachate to the of groundwater in the area causes contamination wells surrounding the landfill. In this paper, in addition to examining groundwater pollution in the city of Bojnourd, is recommend that to design and locate the new standard burial place by using fuzzy logic and to found fourth place with ranking criteria for burial or should be used anaerobic digestion instead of waste disposal.