A Study on Characteristics of Water Quality in Wastewater according to the Washing of Municipal Solid Waste Incinerator (MSWI) Ash

  • Byun, Mi-Young (Institute of Geoscience and Mineral Resources) ;
  • Kim, Hyung-Seok (Institute of Geoscience and Mineral Resources) ;
  • Ahn, Ji-Whan (Institute of Geoscience and Mineral Resources) ;
  • Kim, Hwan (School of Materials Science and Eng., Seoul National University)
  • Published : 2001.10.01

Abstract

In order to recycle the incineration ash (bottom ash and fly ash) generated from the incineration of municipal waste for a cement material, salts as well as heavy metal should be removed by the stabilization treatment. Most of these heavy metal and over 80% of salts are removed by a washing as a pre-treatment. However, wastewater which is another pollutant is generated by a washing, then proper treatment should be developed. First the characteristics of incineration ashes collected from two domestic full-sized incinerators were investigated and removal rate of salts and heavy metals from them also studied. The wastewater quality was compared to the criteria of the regulation by analyzing the characteristics of generated wastewater during the washing of incineration ash as a condition of liquid/solid ratio. Also, we tried to used this experimental results for the basic data to develop proper processing technique of municipal waste.