Effect of Leachate Recirculation on Moisture Content of Waste in Bioreactor Landfill
Leachate recirculation is the most important measure in bioreactor landfill to keep appropriate moisture content and accelerate the degradation and stabilization of waste.By means of simulated experiment,the effect of different recirculation frequency,quantity and rate on the moisture content of waste at different waste density was studied.Results showed that before the moisture content of waste reached its effective storage,the leachate was produced due to channel flow of recirculated leachate.It was also shown that the effective water storage capacity and moisture content was increased with the higher recirculation frequency,the more recirculated leachate quantity and the lower recirculation rate.The influence factors including leachate recirculation frequency,quantity,rate,temperature and waste density must be considered in the operation of leachate recirculation.