양수처리 및 지중 정화(과황산염) 공법을 복합 적용한지하수 정화 사례 연구

초록

This work presents a case study of applying a combined remediation strategy using Pump-and-Treat (P&T) and In-SituChemical Oxidation (ISCO) to remediate phenol-contaminated groundwater. In 2020 and 2021, emergency containmentactions were implemented with maximum pumping rates to reduce phenol concentration, which were measured at 356,535, and 258 mg/L at W1R, EW1R, and EW3R, respectively. From 2022, planned pumping operations combined withpersulfate (PS) injection were initiated to manage the rebound effect. As a result, all observation points maintained phenolconcentrations below 1 mg/L from 2023 onward. By 2024, phenol concentrations at all sites reached non-detectable levels(<0.005 mg/L). The study confirms that optimizing pumping rates and capture zones was effective in achieving completecontaminant removal. Furthermore, it highlights the importance of swift initial responses in maximizing remediationefficiency with less costs, offering valuable insights to development of effective remediation strategies in similarcontamination cases.

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