A two case study of industrial wastewater treatment is reported in order to prove the suitability of ozonation for biorefractory COD removal. The ozone application as an end treatment is shown to provide an excellent oxidation yield of organic matter in a landfill leachate. The combination of ozonation and fixed bed biofilm process appears quite effective for the post-treatment of two biological effluents from paper industry.

advanced chemical oxidation, biofiltration, biorefractory organic matter, COD removal, combined oxidation treatment, landfill leachate, ozonation, paper mill effluent, partial chemical oxidation
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© IWA Publishing 2001
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