Method for removing polycyclic aromatic hydrocarbons in soil by using persulfate-calcium peroxide through compound oxidation
A calcium peroxide, polycyclic aromatic hydrocarbon technology, applied in the field of polycyclic aromatic hydrocarbons, can solve the problems of difficult to control repair, rapid decomposition and instability, damage to soil physical and chemical properties, etc.
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[0021] Total PAH removal rate:
[0022]
[0023] Examples 1-6, the prepared polluted farmland soil is processed using the above-mentioned polluted soil treatment method, wherein the soil-water ratio, the amount of calcium peroxide added (the amount added in the soil after air-drying per unit mass), the ferrous ion in the mud reaction solution Concentration, oxalate ion concentration and persulfate ion concentration adopt the parameters in Table 1, and the reaction time is 4 days, and then the treated soil is tested for polycyclic aromatic hydrocarbons. Wherein, the ferrous ion is added in the form of ferrous sulfate, the oxalate ion is added in the form of potassium oxalate, and the persulfate ion is added in the form of sodium persulfate.
[0024] Table 1 The effect of calcium peroxide addition on the removal rate of polycyclic aromatic hydrocarbons in soil
[0025]
[0026]
[0027] Test Results:
[0028] Table 2 The removal rate of polycyclic aromatic hydrocarbon...
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