Chemical oxidation remediation method for organism-contaminated soil and remediation device
A technology of polluted soil and remediation method, applied in the restoration of polluted soil, etc., can solve the problems of precipitation, easy decomposition of hydrogen peroxide, easy oxidation of ferrous ions, etc., to achieve the effect of promoting contact and avoiding secondary pollution
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[0037] There are 5 implementation cases and 2 comparison cases for the small engineering test. The specific treatment is shown in Table 1. The specific steps of using self-developed equipment to repair contaminated soil are as follows: In the reactor, add 20 kg of naturally contaminated soil to be repaired. Dissolve the chelating agent citric acid of 0, 0.2, 0.3 or 0.4mol / (kg soil) in deionized water, add it to the reactor and stir evenly with a stirrer; then add 0.03, 0.2, 0.3 or 0.4mol / (kg soil) ) The catalyst ferrous sulfate is configured into a solution, which is added to the reactor by a pump, and forms a chelate with the citric acid added first, and reduces the pH to about 2~3; finally add 1~2mol / (kg soil) The oxidant hydrogen peroxide. The reactor is tightly covered with a sealing cover, and an exhaust pipe is connected to the reactor to accept the gas that escapes from the reaction into a near...
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