QUANTUM (DMI-65)
PHYSICAL PROPERTIES
| Color | Brown to black |
| Bulk Density | 20 kg / 0.0135 m3 |
| Specific gravity | 2.65 |
| Effective size | 0.60 – 0.65mm |
| Uniform coefficient | 1.4 to 1.7 |
| Mesh size | 20 – 42 |
| Attrition loss per annum | 1 – 5% |
OPERATING CONDITIONS
| Water pH range: 5.8 – 8.6 |
| Maximum water temperature: 45 degrees c |
| Bed deptd: 600 mm (minimum) commonly 1000mm |
| Freeboard: 40% of bed deptd (minimum) |
| Service flow rate: 1 – 30 m3/m2 hr (commonly 5 – 12 25 – 80 m3/m2 hr) (dependant on water quality and treatment conditions) |
| Backwash flow rate: suggest 700mm/min vertical velocity |
| Backwash bed expansion: between 15 – 50% |
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