concentration is high while phosphorus content is low. Experiments show that high
concentration of NH 3 –N in leachate will reduce dehydrogenase activity and inhibit
microbial activity. Meanwhile, it also inhibits the biological denitrification process
due to insufficient carbon sources. Seriously unbalanced nutrition ratio makes it
more difficult to deal with it.
Table 5.73 Classification of Refuse Composition in A City of a Province in Southeast China
Refuse composition
Proportion (%)
Total
Primary classification
Secondary classification
Organic matter
Animal
2.78
43.04
Vegetal
40.26
Inorganic matter
Brick and tile (d > 15 mm)
4.9
17.14
Lime soil
12.24
Recyclable matter
Paper
9.35
Plastic material
15.58
Glass
2.92
Metal
1.3
Fabric
3.23
Other
7.44
Total
100
Fig. 5.34 Concentration of
COD in raw water
Fig. 5.35 Concentration of
BOD 5 in raw water
238
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