Effluent wastewater from an industrial facility may carry a broad and variable range of contaminants, including BOD, COD, color, phenols, cyanides, sanitary waste and a host of complex chemicals. Ozone, in combination with UV and/or other physical, chemical or biological processes, has the potential to treat complex industrial wastes due to its strong oxidative nature. In combination with medium pressure UV, ozone exhibits the power of advanced oxidation for TOC reduction, as well as destruction of organics. Potential industries that can benefit from ozone and UV include pharmaceuticals, textiles, automotive, foundry, etc.

Additional Reading: 
AOX and COD removal from landfill leachates with ozone and radical reactions
Landfill leachate treatment: case studies
Pilot plant investigation of ozone disinfection of physicochemically treated municipal wastewater
Ozonation and granular activated carbon filtration