Experimental study of settlement characteristics of bioreactor landfill

Abstract

The variation trend of leachate, biogas production and component and settlement ratio in pre-treatment leachate recirculation landfill (PLRL) were compared with raw leachate recirculation landfill (RLRL) and no leachate recirculation landfill (NLRL). Combine the change of COD, BOD5, pH value and peak value time of biogas yield in each reactor, it can be summarized that the ratio of BOD5/COD was the lowest in PLRL. The highest settlement ratio of PLRL, RLRL and NLRL were 65.1%, 49.2% and 17.5%, respectively. Consequently, fast degradation of the waste in PLRL has unique advantages on the settlement.