Greensand KT is effective at higher operating temperatures and higher differential pressures than ordinary manganese greensand. Greensand KT is a black filter media used for removing soluble iron, manganese, hydrogen sulfide, arsenic, and radium from water supplies. The manganese dioxide coated surface of Greensand KT acts as a catalyst in the oxidation reduction reaction of iron and manganese.

Systems may be designed using either vertical or horizontal pressure filters, as well as open gravity filters.

Greensand KT is a proven technology for iron, manganese, arsenic, radium, and hydrogen sulfide removal. Unlike in-situ treated media, there is no need for extensive preconditioning of filter media or lengthy startup periods, during which required water quality may not be met.

PHYSICAL PROPERTIES

  • Physical Form               : Black Granules
  • Apparent Density         : 77 lb/cu.ft
  • Specific Gravity.           : 2.4 approx
  • Porosity                         : 0.45 approx
  • Screen Grading            : 20 x 60 mesh
  • Effective Size.              : 0.30 to 0.35 mm
  • Uniformity Coefficient : < 1.60
  • pH Range                      : 6.2 to 8.5
  • Backwash Rate             : 12 gpm/sq.ft. @ 55ºF
  • Service Flow Rate         : 2-12 gpm/sq.ft
  • Minimum Bed Depth.   : 15 inches

OPERATING CONDITIONS

  • Bed Type                :  Greensand KT 15 inches
  • Backwash              : Sufficient rate using treated water to produce 45% bed expansion
  • Air/Water Scour.    : Optional using 0.7 to 2.5 cfm/sq.ft. with a simultaneous treated water backwash at 5.0 to 5.5 gpm/sq.ft.
  • Raw Water Rinse.  : At normal service flow rate for 5 to 10 minutes or until effluent is acceptable

FEATURES

  • Removal of iron, manganese, and hydrogen sulfide
  • Effective over wide PH range
  • High tolerance of oxidizers such as chlorine
  • Low attrition for long bed life

 

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