Question:
a) List, with appropriate justifications, the most significant design parameters while constructing a landfill
b) Draw the pattern of gas generation in a typical landfill and indicate the different phases.
c) Using the Landgem model of Q =∑ 2KMLoe-kt where Q yearly methane generation rate at time t after solid waste placement in m3 per yr
M Solid waste placed t years before present in landfill
k First order rate constant in yr-1
Lo Potential methane generation capacity of the msw in m3 per ton
t Time since start of gas generation
Determine the peak gas production during the first year for a landfill receiving 167000 tons per year. The landfill gas constant is 0.0307 yr-1 and the methane generation potential is 140 m3/tonne.