Apparatus And Method For Remediating Trichloroethylene-polluting Soils By Integrated Rotated Migration And PRB

A device for remediating trichloroethylene-polluting soil, comprising:

• a device of electrokinetic remediation, Permeable Reactive Barriers (PRBs), and a device of injection of surface active agents, wherein the device of electrokinetic remediation comprises:
• at least two pairs of electrodes including a cathode and an anode for each pair, which are arranged alternately in a radial pattern,
• a stabilized voltage supply, in which electrodes connect with the supply by parallel connection,
• an electrode chamber including an anode compartment and a cathode compartment accommodating mentioned cathodes and anodes respectively,
• an electrolytic bath with an anolyte tank for storing alkaline electrolyte and a catholyte tank for storing acidic electrolyte, in which the anolyte tank and the catholyte tank connect with the anode compartment and the cathode compartment respectively by the first peristaltic multi-channel pump to carry the alkaline electrolyte and the acidic electrolyte to the anode compartment and the cathode compartment through channels,
• the first control system, connecting with various electrode chambers via the first peristaltic multi-channel pump to control delivery of the alkaline electrolyte and the acidic electrolyte,
• an electrolyte treatment tank, connecting with various electrode chambers via the second peristaltic multi-channel pump to receive discharged electrolytes, and
• the second control system, connecting with various electrode chambers via the second peristaltic multi-channel pump to control discharge of electrolytes from various electrode chambers to the electrolyte treatment tank;
• wherein the PRBs are arranged between each pair of electrodes in a radial pattern;
• and
• a device of injection of surface active agents, including:
• a liquid injection pipe, installed in soil between various electrodes and PRBs for injecting surface active agents into polluted soil,
• a reservoir of surface active agents, connecting with the liquid injection pipe for storing surface active agents, and
• a third control system, connecting the liquid injection pipe and the reservoir of surface active agents to control injection of surface active agents.