Method for remediating PAEs polluted soil by using microwave enhanced calcium peroxide

Abstract

The invention belongs to the technical field of organic polluted soil remediation and discloses a method for remediating phthalic acid esters (PAEs) polluted soil by using microwave enhanced calcium peroxide. The method comprises the steps of preparing a slurry soil mixed solution from the PAEs polluted soil according to a certain liquid-solid ratio; adding a certain quantity of citric acid, ferrous sulfate and calcium peroxide into the solution; and carrying out microwave treatment and standing to enable the degradation rate of PAEs in the soil to reach more than 80%. The method has the advantages of simple process condition, low operation requirement, high treatment efficiency, low oxidizing agent waste and the like and is suitable for remediating the PAEs polluted soil.

Description

technical field

[0001] The invention belongs to the technical field of remediation engineering of organic polluted sites, and in particular relates to a method for remediating phthalate esters (PAEs) polluted soil by using microwaves to strengthen calcium peroxide. Background technique

[0002] Phthalates (PAEs), also known as phthalates, are an important class of environmental hormone compounds. They often enter the food chain through the bioaccumulation of animals and plants, interfere with the normal level of hormones in the blood, and affect the growth of organisms. developmental behavior. Both Chinese and American environmental protection departments have included various PAEs in the blacklist of priority pollutants. PAEs are hydrophobic and lipophilic organic substances. PAEs entering the environment will be adsorbed on soil particles, and the soil becomes a storage and transfer station for PAEs in the environment. At present, there are serious PAEs pollution problem...