Method for electrically remedying soil polluted by petroleum
A technology of oil pollution and electric repair, which is applied in the field of electric repair of oil-contaminated soil, can solve the problems of secondary pollution, environmental damage, physical and chemical properties, etc., and achieve the effect of avoiding secondary pollution and maintaining basic physical and chemical properties
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specific Embodiment approach 1
[0012] Specific implementation mode 1: In this implementation mode, a method for electrical restoration of oil-contaminated soil is realized through the following steps:
[0013] Step 1. Prepare the desorption solution: the components of the desorption solution are β-cyclodextrin and CaCl 2 , respectively configure them into aqueous solutions, wherein the aqueous solution concentration of β-cyclodextrin is 1.5~2g / L, CaCl 2 The aqueous solution concentration is 0.005 ~ 0.009mol / L, the β-cyclodextrin aqueous solution and CaCl 2 The aqueous solution is mixed at a volume ratio of 1:1, and the pH value of the desorption solution is controlled at 7.0±0.1;
[0014] Step 2. Take the long-term petroleum-contaminated soil, mix each gram of petroleum-contaminated soil with 0.1-0.3ml of desorption solution, then put it into a rectangular parallelepiped reactor, and seal it tightly;
[0015] Step 3. Insert two plate-shaped electrodes into the two ends of the mixed soil, connect the two e...
specific Embodiment approach 2
[0020] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the aqueous solution concentration of β-cyclodextrin in step one is 1.674g / L, CaCl 2 The aqueous solution concentration is 0.007mol / L. Other steps and parameters are the same as those in Embodiment 1.
specific Embodiment approach 3
[0021] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 2, every gram of oil-contaminated soil is mixed with 0.2ml of desorption solution. Other steps and parameters are the same as those in Embodiment 1.
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