ResinTech CG8 is a premium grade, high capacity, gelular, sulfonated, polystyrene cation resin supplied in the sodium or hydrogen form as moist, tough, uniform, spherical beads. ResinTech CG8 is intended for use in all water softening, dealkalization, deionization and chemical processing applications.
Features and Benefits
• Complies with FDA regulations• Complies with USDA regulation for potable water systems
• Certified NSF/ANSI-61 certified for material safety
• Highly uniform particle size, low pressure drop
• Superior physical stability
• Low color throw
Pressure Drop
The chart below shows the expected pressure loss per foot of bed depth as a function of flow rate, at various temperatures.
Backwash Expansion
After each cycle the resin bed should be backwashed at a rate that expands the bed 25 to 50 percent. This will remove any foreign matter and reclassify the bed. The chart below shows the expansion characteristics of ResinTech CG8 in the sodium form.
Operating Capacity
The Sodium cycle operating capacity of ResinTech CG8 for hardness removal at various regeneration levels with an influent calcium/magnesium ratio of 2/1 and a hardness level of 500 ppm, as CaCO3, is shown in the following table:
| Pounds NaCl/cu.ft. |
Capacity Kilograins/cu.ft. |
|---|---|
| 5 | 20.0 |
| 7.5 | 25.4 |
| 10 | 29.0 |
| 15 | 33.0 |
The following table shows the hydrogen cycle relationship between operating capacity and regeneration level when using sulfuric acid as the regenerant:
| Pounds H2SO4/cu.ft. |
Capacity Kilograins /cu.ft. | |
|---|---|---|
| 500 ppm as CaCO3 NaCl |
500 ppm as CaCO3 CaCl3 |
|
| 5 | 19 | 11.5 |
| 7.5 | 23 | 12.8 |
| 10 | 25.3 | 13.6 |
| 15 | 28.1 | 14.5 |
| 20 | 29.7 | 15.0 |
The capacity data is based on an acid concentration of 2 percent in order to avoid calcium sulfate precipitation. Higher operating capacities could be obtained using a stepwise increase in acid concentration to avoid the calcium problem.
| Physical Properties | |
|---|---|
| Polymer Structure: | Styrene Crosslinked with DVB |
| Functional Group: | R-(SO3)-M+ |
| Ionic Form, as shipped: | Sodium or Hydrogen |
| Physical Form: | Tough, Spherical Beads |
| Screen Size Distribution: | |
| +16 mesh (U.S. Std) | < 5 percent |
| -50 mesh (U.S. Std) | < 1 percent |
| pH Range: | 0-14 |
| Sphericity: | > 93 percent |
| Uniformity Coefficient: | Approx. 1.6 |
| Water Retention | |
| Hydrogen Form: | 47 to 54 percent |
| Sodium Form: | 42 to 49 percent |
| Solubility | Insoluble |
| Approximate Shipping Weight: | |
| Hydrogen Form: | 50 lbs/cu.ft. |
| Sodium Form | 52 lbs/cu.ft. |
| Swelling Ca+2 or Na+ to H+ | 5 to 9 percent |
| Total Capacity | |
| Sodium Form: | 1.9 meq/ml min |
| Hydrogen Form: | 1.8 meq/ml min |
| Suggested Operating Conditions | |
|---|---|
| Maximum Temperature: | |
| Sodium Form: | 280°F |
| Hydrogen Form: | 265°F |
| Minimum Bed Depth: | 24 inches |
| Backwash Rate: | 25 to 50% Bed Expansion |
| Regenerant Concentration: | |
| Hydrogen Cycle: | 10% HCl or 1 to 8% H2SO4 |
| Sodium Cycle: | 10% to 15% NaCl |
| Regenerant Flow Rate: | 0.5 to 1.5 gpm/cu.ft. |
| Regenerant Contact Time: | At least 20 Minutes |
| Regenerant Level: | 4 to 15 pounds/cu.ft. |
| Displacement Rinse Rate: | Same as Regenerant Flow Rate |
| Displacement Rinse Volume: | 10 to 15 gallons/cu.ft. |
| Fast Rinse Rate: | Same as Service Flow Rate |
| Fast Rinse Volume: | 35 to 60 gallons/cu.ft. |
| Service Flow Rate | 2 to 10 gpm/cu.ft. |
