chapter 4: temperature inside the landfill

Where Ms is the mass of solids present in the waste, MCi is the intial moisture content of
the waste before liquid injection and ρ is the density of the water. MCi is assumed to be 0.23 as
observed by Jonnalagadda (2004).
From Equation 4-9, mass of landfilled solids can be found out. The bulk density of the
waste can be defined by Equation 4-10,
ρV
+ M
2 s
ρ b =
(4-10)
VT
Equation 4-10 can be rearranged to give the total volume affected by the injection. The
total volume potentially affected by the injection VT ’ was estimated by taking into account the
distance between the injection well and corresponding monitoring location d (7.62 m), and the
screened length of the injection well l, using the volume equation for a cylinder (Equation 3-9).
the site.
VT '
2
Πd
* l
= (4-11)
4
The percentage of volume wetted was found out by the equation 4-12,
VT
* 100
P = (4-12)
V
T '
The percentage of the volume wetted indicates the efficacy of the injection system used at
4.7 Results and Discussion
During the analysis of average temperatures, initial temperatures were found to
increasing with depth. Initial temperatures at different depths were 53 0 C, 51 0 C and 42 0 C for
51