PUMP AND TREAT AEROBIC FLUSHING BIOREACTOR LANDFILL

摘要

A study is being conducted to provide a novel approach to sustainable landfilling by removing releasable recalcitrant carbon and ammonia-nitrogen at the end of a bioreactor landfill life through a Pump and Treat Aerobic Flushing Bioreactor Landfill (PTAFBL). Remaining contaminants, such as leachable ammonia-nitrogen and carbon are flushed from the landfill through the recirculation of leachate. Recalcitrant organics can be partially oxidized ex situ using Fenton's Reagent or other chemicals. The oxidized organics are returned to the landfill and treated aerobically in situ, along with ammonia-nitrogen. After this treatment, the end products remaining in the landfill are essentially humic matter and immobilized inorganic compounds. The ability to achieve sustainable landfilling by removing releasable carbon (recalcitrant) and ammonia-nitrogen at the end of a landfill life is being evaluated by operating and monitoring PTAFBL reactors, which includes conducting laboratory tests to determine the chemical group and structural (molecular) changes in the solid waste and leachate.