Engineering Application of Vertical Anaerobic/Aerobic Reactor for Landfill Leachate Treatment

Abstract:

This manuscript introduced the treatment project for anaerobic effluent of landfill leachate from a waste incineration plant. A vertical anaerobic/aerobic reactor was used in the project, which could reduce the floor space. Contaminant removals during the reactor's startup and commissioning were investigated. The results showed that the effluent COD and NH3-N concentrations were respectively below 1 900 mg/L and 180 mg/L when the processing loads were around 1.8 kg COD/(m3·d) and 0.36 kg NH3-N/(m3·d). And the removal efficiencies of COD and NH3-N were respectively reached at 80% and 90%. The reactor exhibited a good resistance to impact load, and the effluent complied with design requirements after 120 d full-load operation. Moreover, the third grade criteria specified in the Discharge Standard of Integrated Wastewater could be reached via subsequent treatment using membrane bioreactor.