Influence of Landfill Modes on Stabilization of Sludge Landfill

Based on the experience in garbage landfill,semi-aerobic landfill and anaerobic landfill of sludge were performed in two simulated landfill sites,and the leachate quality was monitored at regular intervals.The stabilization of landfill sites having two landfill modes was evaluated utilizing exponential technique.The bulk density,density and porosity of sludge in semi-aerobic landfill are increased more rapidly than those in anaerobic landfill.The semi-aerobic landfill is more favorable than the anaerobic landfill in reducing the pollutants,and the pollutant concentration in leachate is lower.The stabilization velocity of semi-aerobic landfill is greater than that of anaerobic landfill.After 10 weeks of closing,the semi-aerobic landfill site reaches the stabilization degree of two grade,and the leachate quality reaches secondary discharge standards,while after 30 weeks of closing,the anaerobic landfill site reaches the same stabilization degree.