A REMEDIATION METHOD OF CONTAMINATED MATERIALS BY USING PYRITE, ZERO-VALENT IRON AND GRAPHITE AS REACTIVE MATERIAL FOR THE REACTIVE WALL

摘要

PURPOSE: A groundwater treatment method using reaction wall formed elemental Fe, pyrite and graphite is provided. According to this method, the elemental Fe is mixed with the pyrite for keeping increasing of the pH, thereby the efficiency of dehalogenation increases, and the graphite is used for adsorbing organic matters and sediments contained in the groundwater. CONSTITUTION: The reaction wall is compounded of the elemental Fe such as nanoscale Fe, granular Fe and iron powder, the pyrite and the graphite. The elemental Fe are mixed with the pyrite in a weight ratio of 1: 1000, and the soil, the mixture of the elemental Fe and the pyrite and the graphite are mixed in weight ratio of 79: 20: 1.