Method for repairing dichlorobenzene contaminated soil environment by using non-uniform electrokinetics-persulfate oxidation combination method
A technology of persulfate oxidation and electrokinetics, applied in the field of remediation of dichlorobenzene-contaminated soil environment, can solve problems such as further improvement of remediation efficiency, curing and acidification of remediation sites, electrode polarization, etc., and achieve ideal remediation effect, engineering The effect of small amount and small pH change
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Embodiment 1
[0028] Embodiment 1: remediation of dichlorobenzene contaminated soil (group f) with heterogeneous electrokinetics-persulfate combined technology
[0029] according to figure 1 As shown, prepare the heterogeneous electrokinetics-persulfate oxidation combined method restoration device, the heterogeneous electrokinetics-persulfate oxidation combined method repair device includes an electrokinetic reaction column 1, and first electrodes arranged on both sides of the electrokinetic reaction column Chamber 2 and the second electrode chamber 3, the body of the electrokinetic reaction column is cylindrical (Φ6.0cm*10.0cm) with both ends open, and the first electrode chamber and the second electrode chamber are connected with the electrokinetic reaction column A cylinder with an inner opening with matching diameters, liquid inlet holes 10 and exhaust holes 11 are opened on the cylinder walls of the first electrode chamber and the second electrode chamber, and the electrokinetic reacti...
Embodiment 2
[0035] Embodiment 2: use heterogeneous electrokinetics-persulfate combined technology and switch electrode polarity method to remediate dichlorobenzene polluted soil (g group)
[0036] This embodiment is basically the same as Embodiment 1, except that the positive and negative poles of the pair of electrodes are switched every 12 hours during the restoration process, thereby forming a constantly changing non-uniform electric field to restore the contaminated soil.
[0037] The results are shown in Table 1 and image 3 .
[0038] Result shows, 1. the present invention can drive persulfate to enter soil by adopting columnar iron electrode to form non-uniform electric field, promotes the migration of persulfate, and persulfate migration is obvious in catholyte, accelerates the remediation of polluted soil. Under the condition of switching the electrode polarity (Example 2), the heterogeneous electrokinetics-persulfate combined technology can promote the migration of persulfate i...
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