Sustainable Mining and Metallurgy

This paper analyzed and summarized the research and application of ozonation-biological aerated filter ( BAF ) combined process in the advanced treatment of landfill leachate in recent years. The characteristics of biochemical effluent quality of landfill leachate, the principle of ozone-BAF combined process for treating organic pollutants, the form and influencing factors of ozone-BAF, and the production cost were mainly introduced. The ozonation-BAF process can use the strong oxidation of ozone to oxidize refractory macromolecular organic matter into small molecular organic matter, improve the biodegradability of wastewater, reduce biological toxicity, and then further adsorb, oxidize and decompose the small molecular organic matter through the biofilm in the biological aerated filter, so that the effluent is further purified to achieve COD standard discharge. It is a promising non-membrane advanced treatment method.