| Parameter |
Sewage Sludge |
Leachate |
| Chemical oxygen demand (COD) (mg/L) |
210.6 ± 13.4 |
4382.4 ± 135.3 |
| Total organic carbon (mg/L) |
61.3 ± 5.3 |
1520.7 ± 109.7 |
| Total solids (%) |
14.7 ± 4.2 |
12.2 ± 2.1 |
| Water content (%) |
85.3 ± 3.2 |
87.8 ± 3.67 |
| pH |
7.8 ± 0.1 |
8.2 ± 0.1 |
| Alkalinity (mg/L as CaCO3) |
1938.0 ± 105.4 |
4567.5 ± 146.8 |
| Ammoniacal nitrogen (mg/L) |
29.5 ± 3.41 |
181.5 ± 13.6 |
| NO3–N (mg/L) |
24.5 ± 1.3 |
18.9 ± 2.2 |
| Total Kjeldahl Nitrogen (TKN) (mg/L) |
43.2 ± 2.42 |
876.3 ± 14.9 |
| Total volatile fatty acids (mg/L) |
1310.9 ± 129.6 |
1237.1 ± 89.6 |
| Sulphate (mg/L SO42–) |
131.4 ± 10.3 |
100.9 ± 11.4 |
| Phosphate (mg/L PO43–) |
36.7 ± 4.3 |
43.1 ± 7.6 |
| Mixed liquor volatile suspended solids (mg/L) |
2341.5 ± 103.5 |
3120 ± 149.7 |
| Temperature (°C) |
36.2 ± 0.2 |
37.6 ± 0.2 |
| Specific gravity |
1.054 ± 0.031 |
1.032 ± 0.022 |
| Total bacterial count (per 100 mL) |
4.1×105 |
6.7×106 |
