| Parameters | Initial sludge sample | Sludge sample 3 days after dilution with sandy-loam soil | DPR limit | ||||||
| S1 | S2 | S3 | S4 | S1 | S2 | S3 | S4 | ||
| MC (%) | 20.6 | 20.5 | 23.2 | 23.88 | 25.6 | 25.5 | 26.1 | 26.12 | - |
| pH | 5.48 | 5.44 | 5.75 | 5.68 | 5.52 | 5.57 | 5.92 | 5.82 | - |
| THC (mg/kg) | 98,000 | 98,400 | 93,500 | 95,000 | 64,200 | 64,700 | 59,250 | 62,350 | 50,000 |
| P (mg/kg) | 14.05 | 14.8 | 12.8 | 10.28 | 28.00 | 31.5 | 25.33 | 21.33 | - |
| TOC (%) | 0.88 | 0.95 | 0.88 | 0.89 | 0.68 | 0.72 | 0.69 | 0.70 | - |
| TN (%) | 0.19 | 0.20 | 0.18 | 0.20 | 0.24 | 0.25 | 0.25 | 0.25 | - |
| C/N ratio | 4.63 | 4.75 | 4.89 | 4.45 | 2.83 | 2.88 | 2.60 | 2.69 | - |