| abstract |
A passivation method for heavy metal contaminated farmland soil, comprising: 1) adding a passivating agent mainly achieving a chemical reaction function into heavy metal contaminated soil, uniformly stirring, and standing for maintenance; 2) adding a passivating agent mainly achieving an adsorption function into the mixture obtained in the step 1), uniformly stirring, and standing for maintenance; and 3) adding water into the mixture obtained in the step 2), adjusting the weight moisture content to 20-40%, and standing for maintenance. The method achieves effective remediation of heavy metal contaminated farmland. |