Mechanochemical stabilization of lead containing soil for contaminated site remediation

摘要

Lead smelting industry produces a large amount of heavy metal-containing solid wastes,and its heavy metal contamination site is the most serious in China.These wastes should be safely stored and disposed because several serious accidents of exceeding limits of children blood lead happened in many parts of our country.Solidification and stabilization are the common methods to treat these wastes.The traditional solidification/stabilization method has the problems such as incompletely solidification and unstable structure.Therefore,we propose that utilization of Mechano-chemical reaction which could strengthen the stabilization process of lead contaminated soil with solid phase radicals.This research provided a new technology and theory basis for the design and optimization of harmless disposal and remediation of heavy metal contaminated soil.