A PURIFYING METHOD OF LIGHT NON-AQUEOUS PHASE LIQUID IN UNDERGROUND WATER FOR REMEDIATION OF PETROLEUM HYDROCARBONS -CONTAMINATED SOIL

摘要

PURPOSE: A purifying method of underground water in an extracted low density non-aqueous liquid, for restoring oil contaminated soil is provided to improve the fenton oxidation process efficiency by effectively removing minute pollution particle phase materials. CONSTITUTION: A purifying method of underground water in an extracted low density non-aqueous liquid comprises the following steps: collecting the low density non-aqueous liquid by bio-slurping process, and oil-water separating the obtained low density non-aqueous liquid; and fenton oxidizing the obtained polluted underground water, before discharging. The purifying method uses a polluted underground water processing apparatus including a preprocessing tank electrolyzing micro-colloid particles attached to the shear end of reaction tank(60) and an oil treatment reagent, and naturally precipitating particle materials with the density greater than 1.