Abstract
Recently the drainage water from the stable type of industrial waste landfills have often caused water pollution problems. In order to prevent water pollution, the model for water quality changes of drainage water from industrial waste landfill using series tank model was developed. We analyzed stream runoff for the neibouring basin of the landfill by tank model, which dilute drainage water from the landfills. As a result, the model developed in this study represented that concentration of T-N, COD, and EC decrease from the time the landfill got filled up and concentration changes by hydrologic condition. The effluent discharge from the neibouring basin was extremely changeable whereas that from the landfill changed slowly. Compared with changes of the drainage water from the landfill was softened because of storage effect of the landfill. As a result of calculation of effluent from the landfill basin and neibouring basin year by year by the model, the water quality changes after the drainage water from the landfill flow into the small stream with the model. In conclusion, even if the concentration of drainage water from landfill decreases, dilution effect by stream would not be expected so much because small stream become dry during a droughty period whereas effluent from landfill has the steady discharge.
