Table 2 Chemical compounds of compost and sludge
Compost | Sludge | ||
|---|---|---|---|
Contents | Units | Contents | Units |
Nitrogen (N) | 1.32% | Nitrogen (N) | 2.52% |
Phosphorus (P) | 0.33% | Phosphorus (P) | 0.36% |
Potassium (K) | 0.60% | Potassium (K) | 0.18% |
Calcium (Ca) | 3.32% | Ferrus (Fe) | 1.27% |
Magnesium (Mg) | 0.28% | Manganese (Mn) | 319 mg/kg ds |
Sodium (Na) | 0.65 mg | Zinc (Zn) | 1410 mg/kg ds |
Zinc (Zn) | 1780 mg | Cupper (Cu) | 315 mg/kg ds |
Copper (Cu) | 380 mg | Chromium (Cr) | 426 mg/kg ds |
Rubidium (Rb) | 450 mg | Lead (Pb) | 360 mg/kg ds |
Cadmium (Cd) | 5.8 mg | Cadium (Cd) | 3.77 mg/kg ds |
Nickel (Ni) | 140 mg/kg ds | ||