| 摘要 |
A system and a method for the removal of soil contaminants by using a surfactant foam are provided to improve removal efficiency of the contaminants, prevent secondary contamination, and simplify the system and the method themselves by allowing the surfactant foam to separate contaminants from soil particles and completely discharging the surfactant foam and the contaminants separated from the soil particles to the outside. A system for the removal of soil contaminants comprises: a plurality of supply pipes(16) installed at side parts of a contaminant zone; a plurality of discharge pipes(22) installed at the opposite side of the supply pipes in a state that contaminants(z) are positioned between the supply pipes and the discharge pipes; a foam generating part(18) for processing a surfactant solution supplied from the outside into a foam state; an injection pump(20) for transferring the surfactant solution in the foam state prepared in the foam generating part to the supply pipes; a blocking wall(14) installed at a side part of the supply pipes to prevent the surfactant solution in the foam state ejected from the supply pipes from moving to places other than the contaminants; and a vacuum pump(24) providing the discharge pipes with vacuum. The supply pipes have a plurality of ejection holes(16a) formed in peripheral parts thereof. The foam generating part includes a tank(18a) providing a housing space, a pump(18c) for sending the surfactant solution to the tank, and an air pump(18b) ejecting air into the surfactant solution in the tank to generate a foam in the surfactant solution. The discharge pipes having a plurality of suction holes(22a) formed in peripheral parts thereof. Further, the surfactant is a sulfonic acid based surfactant. |
