Clack Corosex Filtration Media

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 con sumption are affected by a number of water chemical variables. Being soluble to acidity, Corosex will slowly dissolve and will need to be replenished periodically.

ADVANTAGES

• High degree of activity and speed of correction allowing high flow

• High capacity...less chemical usage

PHYSICAL PROPERTIES

• 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

• Uniformity Coefficient: 1.7

• Composition: MgO 97% min.

CONDITIONS FOR OPERATION

• Down flow service is generally satisfactory on waters with a hardness of less than five grains/gal. or where it’s combined with Calcite at least 50-50. Up flow service is generally recommended with hardness exceeding five grains/gal. to prevent cementing of the Corosex bed

• Use distributors designed for up flow applications

• A gravel support bed is rec om mended

• 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 fl ow rate: 5-6 gpm/sq. ft. but may be modified to adapt to local conditions

• Max usage 100 mg/L