Abstract
The flow for leachate treatment method commonly used in controlled final landfill sites is as follows : First stage of Chemical Clarification → Biological Treatment → Second stage of Chemical Clarification → Advanced Wastewater Treatment. Recently, however, property changes in landfill waste have caused reductions in organic pollutant loads such as BOD and COD, which conversely increases the salinity level. This is causing a growing impact on living organisms. In addition, the density of persistent COD components rises with the passage of time in a landfill, making it difficult for conventional processes to properly treat T-N and COD. In response to this situation, we studied a treatment method that uses a combination of electrolytic denitrification and catalyzed oxidative decomposition. Our results confirm the possibility of treating T-N and COD in a stable, low cost way.
