Quantum (DMI-65)

Physical Properties

  • Colour : Brown to black
  • Bulk density: 20 kg/ 0.0135 m3
  • Specific gravity: 2.65
  • Effective size : 060-065mm
  • 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 depth: min 600mm commonly 1000mm
  • Freeboard: min 40% of bed depth
  • Service flow rate: 1-30m3/m2hr (commonly
    5-1225-80m3/m2hr)(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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