Product information
Calcite is a filter media based on natural calcium carbonate (CaCO3). Used in filters to neutralize acidity and increase pH level. It is most effective at low water flow rate.
Technical information
Technical characteristics
- Color - lighty grey
- Bulk density - 1.44 g/cm3
- Specific gravity - 2.7 g/cm3
- Uniformity coefficient - 1.5
- Bead size 0.42-1.17 mm
Operating conditions
- A gravel support bed is recommended
- Water pH range - 5.0 - 7.0
- Bed depth - 61-76 cm (24-30 in.)
- Freeboard - 50% of bed depth (min.)
- Backwash rate - 8-12 gpm/sq. ft.
- Backwash Bed Expansion - 35% of bed depth
- Service flow rate - 3-6 gpm/sq. ft. but may be modified to adapt to local conditions
How it works
During contact with Calcite water with lower pH slowly dissolves calcium carbonate until an equilibrium pH value is reached, when its corrosive activity is reduced.
Regular backwash of the neutralizing media prevents its caking and prolongs the service life.
The media is being gradually dissolved within the operating mode, so its volume should be regularly replenished. Frequency of the refill depends on composition of the treated water, its pH, as well as on the efficiency of the neutralizing filter.
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