Abstract
In situ chemical oxidation has the advantages of simplicity, rapidity and thoroughness in removing some biodegradable pollutants (such as trichloroethylene). This paper reviews the research progress of three environmentally friendly oxidants, hydrogen peroxide, calcium peroxide and sodium persulfate, in environmental remediation. This paper mainly traces back the literature from two aspects and summarizes the following: on the one hand, the mechanism of free radicals generated by catalytic activation of hydrogen peroxide, calcium peroxide and sodium persulfate; on the other hand, the main factors affecting the removal of groundwater chlorinated hydrocarbons and other organic pollutants by these three oxidants.
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