Treatment Status of Groundwater Polluted by Chromium
The problem of chromium contamination in groundwater is becoming increasingly prominent,and physical,chemical,and biological remediation technologies show promising potential for treating chromium-polluted groundwater.This paper provides an overview of the sources and potential impacts of chromium pollution in groundwater and discusses the mechanisms of remediation techniques such as adsorption,oxidation,reduction,ion exchange,and bioremediation.It is suggested that addressing the current challenges of chromium-contaminated groundwater requires comprehensive interdisciplinary approaches and innovative technologies.Current knowledge substantiates the application potential of these remediation techniques for removing hexavalent chromium(Cr(Ⅵ))and trivalent chromium(Cr(Ⅲ)).Furthermore,this study identifies that the key barriers to the development of various remediation technologies lie in high remediation costs and poor long-term stability.Future research should focus on these issues to facilitate the practical application of diverse remediation technologies.