System and method for remediation of oil-contaminated sand

摘要

The system and method for remediation of oil-contaminated sand provides for washing and separation of sand from oil and oil-based contamination. The system includes a feed hopper for receiving a volume of oil-contaminated sand in communication with a cleaning tank for receiving the volume of oil-contaminated sand therefrom. A mechanical stirrer mixes the volume of oil-contaminated sand with a surfactant solution in the cleaning tank. An ultrasonicator ultrasonicates the volume of oil-contaminated sand and the surfactant solution in the cleaning tank to create a mixture of washed sand and oily wastewater. A collection tank then receives the mixture. A band filter covers an open upper end of the collection tank, such that the mixture of washed sand and oily wastewater is filtered to separate out the washed sand, which may then be collected. The separated oily wastewater is then collected in the collection tank.