OZONATION AND BIOLOGICAL ACTIVATED CARBON FILTRATION OF WASTEWATER TREATMENT PLANT EFFLUENTS

摘要

This study investigated the fate of trace organic chemicals in three full-scale reclamation plants using ozonation followed by biological activated carbon filtration to treat wastewater treatment plant effluents. Chemical analysis was used to quantify a wide range of trace organic chemicals and combined with bioanalytical tools to assess non-specific toxicity and estrogenicity. The combination of ozonation and biological activated carbon filtration achieved removals of up to 50% for dissolved organic carbon and more than 90% for a wide range of trace organic chemicals, as well as a reduction of 70% of non-specific toxicity and more than 95% of estrogenicity. This process combination is, therefore, suggested as an effective barrier to reduce the discharge of trace organic chemicals into the environment or their presence in water recycling schemes, including indirect potable reuse.