Exploit full advantage of geosciences to form the characteristic theoretical and technological system of heavy metal-polluted soil remediation

The lithosphere is the source and also the fatal destination of soil heavy metals. In the lithosphere soil heavy metals migrate, transform and take part in bio-geochemical circles. Hence the principles of geology, petrology, mineralogy and geochemistry play an extremely important role in the remediation of heavy metal contaminated soil. These principles are important in soil pollution investigation, risk assessment, exploration of the compositions of disaster chain and their influential factors, and blocking the way of the disaster, thus forming the geological characteristics of soil remediation. Great achievements in theory of delayed geochemical hazard and geochemical engineering technologies, including several soil remediation agents and some other methodologies, have been obtained. Different scale tests have proved that they are economically and technologically applicable for heavy metal polluted soil remediation.