The invention provides a remediation method for chrome-polluted soil in a
coal mine collapse region. Firstly, soil sample collecting is conducted through a grid multi-
point method, then the chrome content of collected soil samples is measured, the soil is graded according to soil chrome content measuring results, then the 10-18 cm thick part of the
surface layer of the chrome-polluted soil is turned over, a
microbial agent and soil improvement particles of corresponding quantities are applied according to the determined soil grades, finally the chrome-polluted soil is irrigated, the
irrigation depth is 20 cm or over, the
relative humidity of soil reaches 85% or over and is maintained for 10-20 days, and the
microbial agent is composed of adsorption carriers and effective viable
bacteria adsorbed on the carriers. The method is high in remediation efficiency, low in cost and free of secondary
pollution, measures are adjusted to local conditions, the chrome-polluted soil in the
coal mine collapse region can be remedied more precisely and rapidly, chrome is effectively prevented from migrating in the soil,
nutrient elements are provided for the soil for a long time in the
soil remediation process, and the available value of the soil is increased.