Corosex and Corosex II
PRODUCTS > Corosex and Corosex II
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.
Corosex®
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.
On a per weight basis, magnesium oxide can neutralize much more acidity than can calcium carbonate, (five times as much). This results in greatly reduced chemical usage for the same pH correction. Please note, under certain low flow conditions, Corosex® may overcorrect and create a highly basic (high pH) condition.
As Corosex®’s magnesium oxide neutralizes the water, it will increase hardness and a softener may become necessary after the neutralizing filter.
Corosex® can be effectively combined with Clack Calcite to combine the high flow neutralization properties of Corosex®, along with the slower reacting low flow properties of Calcite, reducing potentially high basic properties due to overcorrection.
Corosex II
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
Technical Data
| 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 |
| Uniformity Coefficient | 1.5 |
| Composition | MgO 99% min. |
| CONDITIONS FOR OPERATION | |
|
Downflow 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. 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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