1. Estimation of capacity of disposal site
Determine the capacity of the solid waste disposal site
shown in figure a,b. Also determine the amount of cover
material that must be cut from the sides and rear slope of
the disposal site to meet the specified cover requirements.
Assume the following condition are applicable
1) total lift height is 3.0m
2) front face of the completed landfill will have a slope of
2:1
3)the ratio of solid waste to cover material is 5:1
4) vertical excavation is possible without bank collapse
2.
3. Lift NO Elevation Area at
contour
interval
Average
area
Capacity m3 Cover
material m3
1 0 5550
2 3 6480 6015 18045 3609
3 6 7410 6945 20835 4167
4 9 8340 7875 23625 4725
5 12 9270 8805 26415 5283
6 15 10200 9735 29205 5841
7 total 23625
4. Estimate the required landfill area for a community with a
population of 50000. Assume that the following conditions
apply
1) solid waste generation= 3.2 Kg/capita/day
2)compacted specific weight of solid waste in landfill = 400
Kg/m3
3)Average depth of compacted solid waste = 6 m
Solution:
1) Generation rate of solid waste = 50000x 3.2
= 160000 Kg/day
2) volume required = 160000/400= 400 m3
3) Area required = 400/6=66.66 m2
4) Area required per year = 66.66 x365 = 24330.9 m2 /year
