Calcite Filters - Neutralization Filters

About Calcite:

Calcite is a crushed and screened white marble media which can inexpensively be used to neutralize acidic or low pH waters to a neutral, less corrosive effluent.

Calcite is a naturally occurring calcium carbonate media.  One of the advantages of Calcite is its self-limiting property.  When properly applied, it corrects pH only enough to reach a non-corrosive equilibrium.  It does not overcorrect under normal conditions.  Upon contact with calcite, acidic waters slowly dissolve the calcium carbonate to raise the pH which reduces potential leaching of copper, lead and other metals found in typical plumbing systems.  Periodic backwashing will prevent packing, reclassify the bed and maintain high service rates.  Depending on pH, water chemistry and service flow, the Calcite bed will have to be periodically replenished as the calcite is depleted.

As the Calcite's calcium carbonate neutralizes the water, it will increase hardness and a softener may become necessary after the neutralizing filter.

Advantages of Calcite Filters for Neutralization:

Calcite is a Naturally Occurring Material Low Uniformity coefficient for maximum contact for controlled pH correction.

Inexpensive Slower Reacting for controlled pH correction

Calcite Media Specifications:

• Color: near white
• Bulk Density: 82 lbs./cu. ft.
• Specific Gravity: 2.7
• Effective Size: .40 mm
• Uniformity Coefficient: 1.5
• Hardness: 3.0 (Mohs scale)

Calcite Media Operational Specifications:

• Water pH range: 5.0 – 7.0
• Bed depth: 24 – 30 in.
• Freeboard: 50% of bed dept
• Service flow rate: 3 - 6 gpm/sq. ft.
• Backwash flow rate: 8 – 12 gpm/sq. ft.
• Backwash expansion rate: 35% of bed depth