SOIL WASHING SYSTEM WHERE CONTAMINATED SOIL IS SORTED BEFORE WASHING ACCORDING TO ITS SIZE

• Main Authors: KWON, O SEOK, KIM, CHI HYEONG, KIM, YEONG U, CHO, JONG SOO, PARK, IN SEON, KIM, SEOK HUN
• Format: Patent
• Language: English; Korean
• Published: 30.09.2004
• Edition: 7
• Subjects: DISPOSAL OF SOLID WASTE; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINATED SOIL; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING

PURPOSE: To effectively desorb hazardous organic compounds and heavy metals from contaminated fine soil particles by performing soil washing treatment after classifying contaminated soil per particle size, thereby washing a large quantity of contaminated soil in a short time with high efficiency. CONSTITUTION: The system comprises a feed hopper(10) where contaminated soil is inputted, a log washer(20) washing the inputted soil by spraying city water with transferring it in a shaft rotating manner, a dual screen(30) receiving the washed soil from the log washer, having the soil with a particle size of not less than a first particle size taken out to the outside and discharging the soil with a particle size of not more than the first particle size to the next step, a screw classifier(40) receiving the discharged soil from the dual screen and discharged washed water from the log washer, having the soil with a particle size of not less a second particle size taken out to the outside and discharging the soil with a particle size of not more than the second particle size to the next step, a clarifier(50) settling the fine soil flown in with the washed water and a filter press(70) receiving the settled fine soil from the clarifier, dewatering it and having the dewatered fine soil taken out to the outside.