Review on in-situ chemical oxidation technology in groundwater remediation

With the development of industrialization, more and more pollutants have infiltrated into groundwater, which has been seriously polluted. In-situ chemical oxidation (ISCO) technology has been rapidly developed and widely used in recent years because of its advantages such as wide range of application, complete removal of pollutants, moderate cost, in-situ application and fast processing speed. Combined with the research status of in-situ chemical oxidation technology, this review introduces the research and application of ISCO oxidants such as hydrogen peroxide (H₂O₂), permanganate (MnO₄ ⁻), sodium persulfate (Na₂S₂O₈), sodium percarbonate (2Na₂CO₃ ^•3H₂O₂) and their optimized processes in groundwater remediation, in order to provide theoretical basis for the application of in-situ chemical oxidation technology in the actual remediation of contaminated groundwater.