유류/중금속 복합오염 퇴적토의 정화를 위한 산세척/펜톤/열탈착 복합 공정

Abstract

The remediation of sediments contaminated with both total petroleum hydrocarbons (TPH) and heavy metals posessignificant environmental and health risks. This study explores a multi-step combined remediation approach using Fentonoxidation, thermal desorption, and acid washing to address such contamination. Each process was optimized individually. Acid washing efficiently removed heavy metals, meeting Dutch standards, but showed limited TPH removal. Fentonoxidation reduced TPH by 77%, though heavy metal removal was insufficient. Thermal desorption, however, successfullyeliminated TPH at temperatures above 300°C. Combining acid washing and thermal desorption achieved remediationtargets for both TPH and heavy metals, regardless of process order, meeting industrial standards. The treated sediment canbe safely reused as a resource, offering a sustainable solution for managing contaminated sediments. This integratedapproach demonstrates an effective method for remediating sediments contaminated by both TPH and heavy metals,addressing both environmental and economic challenges.