Effect of food waste Direct Landfilling Prohibition on characteristics of landfill gas and leachate

This research was performed to evaluate the effect of 'Food Wastes (FW) Direct Landfilling Prohibition' on characteristics of landfill gas (LFG) and leachate and the appropriateness of current legislation. Approximately 45% (Exp.45) and 1.5% (Exp. 1.5) of FW were filled in two lysimeters. During 570 days, 1400 L of LFG was generated from Exp.45%, which was much, more than 906 L of Exp.15. There was no significant difference of LFG composition between Exp. 15 and Exp.45. 2-30 ppmv of odorous hydrogen, sulfide was detected in Exp.45, while 2-7 ppmv was in Exp.1.5. There was also no significant difference in the leachate generation between the two. On day 570, BOD₅ of Exp.45 and Exp.1.5 were 37000 mg/L and 25630 mg/L and CODQ- of Exp.45 and Exp.15 were 45480 mg/L, 30294 mg/L. TOC of Exp.45 was 2-3 times higher than Exp.15. Higher portion of FW in landfilling increased LFG generation. However, it generated more odor and made the quality of leachate. Therefore, 'FW direct Landfilling Prohibition' was evaluated as an appropriate legislation.