groundwater i the surrounding area. Therefore, consideration should be given to
taking groundwater control measures during the design of any treatment design.
The water quality test results of leachate and groundwater around the landfill site
indicate that the landfill waste poses risks of contamination to the surrounding
groundwater. Some of the test items of water quality exceeds the limits provided in
the applicable standards. For groundwater control, the leachate or groundwater
extracted must be treated before discharge. For this purpose, it is necessary to
estimate the amount of leachate and groundwater to be extracted.
The extraction amount of leachate and groundwater can be calculated according
to the distribution characteristics of the waste body and leachate of the landfill area.
The calculation results of amount of leachate and groundwater to be extracted from
Niufang Village North landfill site are shown in Table 5.90.
⑧ Calculation results of waste body volume
The volume of waste soil body can be calculated by constructing a digital elevation
model (DEM) with the MapInfo software combined with the surface modeling
function of Surfer software. Due to the poor distribution pattern of waste deposit in
the informal landfill, which is unorganized and extensively affected by human
influence factors, as well as the limited number of implementable exploration holes,
it is recommended that the actual waste volume should be deemed as the calculated
volume plus 15% non-foreseeable volume. The corrected total waste volume in the
investigated area is then 32,526 m
3 . The calculation results are shown in Table 5.91
and the zoning of the landfill site according to different types of waste is shown in
Fig. 5.56.
Table 5.90 Calculation
results of amount of leachate
and groundwater to be
extracted from the landfill site
Category
Extraction amount (m
3
)
Leachate
4033
Groundwater
1628
Total
5661
Table 5.91 Statistical table of waste soil volume
Zone name
Zone
No.
Waste soil type
Area
(m
2
)
Waste soil volume (m
3
)
Calculated
volume
Corrected
volume
Domestic refuse
Filling zone
A
Mainly domestic
refuse
3317
11,966
13,761
Construction
spoils zone
B
Mainly
construction
spoils
4210
16,317
18,765
Subtotal
7527
28,283
32,526
5.5 North China
275
taking groundwater control measures during the design of any treatment design.
The water quality test results of leachate and groundwater around the landfill site
indicate that the landfill waste poses risks of contamination to the surrounding
groundwater. Some of the test items of water quality exceeds the limits provided in
the applicable standards. For groundwater control, the leachate or groundwater
extracted must be treated before discharge. For this purpose, it is necessary to
estimate the amount of leachate and groundwater to be extracted.
The extraction amount of leachate and groundwater can be calculated according
to the distribution characteristics of the waste body and leachate of the landfill area.
The calculation results of amount of leachate and groundwater to be extracted from
Niufang Village North landfill site are shown in Table 5.90.
⑧ Calculation results of waste body volume
The volume of waste soil body can be calculated by constructing a digital elevation
model (DEM) with the MapInfo software combined with the surface modeling
function of Surfer software. Due to the poor distribution pattern of waste deposit in
the informal landfill, which is unorganized and extensively affected by human
influence factors, as well as the limited number of implementable exploration holes,
it is recommended that the actual waste volume should be deemed as the calculated
volume plus 15% non-foreseeable volume. The corrected total waste volume in the
investigated area is then 32,526 m
3 . The calculation results are shown in Table 5.91
and the zoning of the landfill site according to different types of waste is shown in
Fig. 5.56.
Table 5.90 Calculation
results of amount of leachate
and groundwater to be
extracted from the landfill site
Category
Extraction amount (m
3
)
Leachate
4033
Groundwater
1628
Total
5661
Table 5.91 Statistical table of waste soil volume
Zone name
Zone
No.
Waste soil type
Area
(m
2
)
Waste soil volume (m
3
)
Calculated
volume
Corrected
volume
Domestic refuse
Filling zone
A
Mainly domestic
refuse
3317
11,966
13,761
Construction
spoils zone
B
Mainly
construction
spoils
4210
16,317
18,765
Subtotal
7527
28,283
32,526
5.5 North China
275