CLEANING METHOD AND APPARATUS OF OIL-POLLUTED SOIL GROUND

摘要

PROBLEM TO BE SOLVED: To provide the cleaning method of oil-polluted soil ground, having high cleaning effect to even unsaturated soil ground of high pollution degree with oil, and the cleaning apparatus of oil-polluted soil ground. SOLUTION: This cleaning apparatus is provided with a water injection well 18 disposed in the oil-polluted soil ground 10; a pumping well 20 disposed in the oil-polluted soil ground 10 apart from the water injection well 18; a controller 42 controlling the injection amount of water from the injection well 18 and/or a pumping amount from the pumping well 20 to adjust the water level of the oil-polluted soil ground 10 to be a set value; an oil-water separator 28 separating oil from oil-containing water pumped up from the pumping well 20; and a buffer tank 34 temporarily storing the separated water having passed through the oil-water separator 28a and injecting to the water injection well 18. COPYRIGHT: (C)2007,JPO&INPIT