Corosex® and Corosex II
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.
By neutralizing the free carbon dioxide in water, Corosex® can correct acidic water conditions and render it less corrosive. Corosex®, being a highly reactive magnesium oxide, is used most effectively where pH correction is substantial or high flow conditions are in use. pH correction and media consumption are affected by a number of water chemical variables. Being soluble to acidity, Corosex® will slowly dissolve and will need to be replenished periodically.
Also available is a high purity, high density magnesium oxide that overcomes some of the drawbacks of the original Corosex®. The advantage of Corosex II is that it is a slower reacting, more stable form of magnesium oxide, yet it retains the advantages of substantial corrections to low pH waters and reduced chemical usage.
ADVANTAGES |
High degree of activity and speed of correction allowing high flow |
High capacity…less chemical usage |
PHYSICAL PROPERTIES – Corosex® |
Color: Brownish white |
Bulk Density: 75 lbs./cu.ft. |
Mesh Size: 6 x 16 |
Specific Gravity: 3.6 gm/cc |
Effective Size: 1.4 mm/td> |
Uniformity Coefficient: 1.7 |
Composition: MgO 97% min. |
Corosex II |
Color: White |
Bulk Density: 100 lbs./cu. ft. |
Mesh Size: 6 x 16 |
Specific Gravity: 3.4gm/cc |
Effective Size: 1.3 mm |
Uniform Coefficient: 1.5 |
Composition: MgO 99% min. |
CONDITIONS FOR OPERATION |
Downflow service is generally satisfactory onwaters with a hardness of less than five grains/gal. or where it’s combined with Calcite at least 50-50. Upflow service is generally recommended with hardness exceeding five grains/gal. to prevent “cementing of the Corosex bed” |
Use distributors designed for upflow applications |
A gravel support bed is recommended |
Water pH range: 4.5-6.0 |
Bed depth: 24-30 in. |
Freeboard: 50%of bed depth (min.) |
Backwash frequently to prevent possible cementing |
Backwash rate: 10-12 gpm/sq.ft. |
Service flow rate: 5-6 gpm/sq.ft. but may be modified to adapt to local conditions. |
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