If you've run into
silica problems in the past, you know how hard it is to take care of them.
Now, we've formulated ProSelect™ Silica,
the perfect resin to work hand-in-hand with our ProSoft™ Premium
softening resin for the purpose of silica removal. At SWT, we respond
to your needs.
|
| Suggested
Operating Conditions |
| Maximum Temperature |
|
| Chloride
Form |
170ºF |
| Hydroxide
Form |
140°F |
| Minimum Bed Depth |
24 inches |
Backwash Rate
50% Bed Expansion |
2.2 gpm/ft²
@ 60°F |
| Regenerant ** |
2% to 6% |
| Regenerant Flow Rate |
0.25 to 1.0 gpm/ft³ |
| Regenerant Contact Time |
At least 60 minutes |
| Regenerant Level |
4 to 10 lbs/ft³ |
| Displacement Rinse Rate |
Same as Regenerant
Flow Rate |
| Displacement Rinse Volume |
10 to 15 gal/ft³ |
| Fast Rinse Rate |
Same as Service Flow Rate |
| Fast Rinse Volume |
35 to 60 gal/ft³ |
| Service Flow Rate |
2 to 4 gpm/ft³ |
| |
| ** CAUTION: DO NOT MIX ION EXCHANGE RESINS WITH STRONG
OXIDIZING AGENTS. Nitric acid and other strong oxidizing agents can cause explosive reactions when mixed with organic
materials such as ion exchange resins. |
| |
| Physical Properties |
| Polymer Structure |
Unique porous styrene
with DVB |
| Functional Group |
R–N–(CH3)3+X– |
| Ionic Form, as shipped |
Chloride or Hydroxide |
| Physical Form |
Tough, spherical beads |
| Screen Size Distribution |
16 to 45 nominal |
| +16 mesh (US
Std.) |
<2 percent |
| –40 mesh
(US Std.) |
<2 percent |
| –50 mesh
(US Std.) |
<1 percent |
| pH Range |
0 to 14 |
| Sphericity |
93+ percent |
| Uniformity Coefficient |
Approx. 1.6 |
| Water Retention |
|
| Chloride Form |
51 to 57 percent |
| Hydroxide Form |
65 to 70 percent |
| Solubility |
Insoluble |
| Approx. Ship. Wt. |
|
| Chloride Form |
43 lbs/ft³ |
| Hydroxide Form |
50 lbs/ft³ |
| Swelling Cl– to OH– Form |
20 to 27 percent |
| Total Capacity |
|
| Chloride Form |
1.25 meq/ml min |
| Hydroxide Form |
1.0 meq/ml min |
| |
| Operating Capacity |
Pounds
NaOH/ft³ |
Capacity
Kilograins/ft³ |
| 4 |
11.5 |
| 6 |
13.5 |
| 8 |
15.2 |
| 10 |
16.8 |
| |
|
|
Features:
- Complies with USDA & FDA regulations (paragraph
21 CFR173.5) for potable water applications.*
- Uniform particle size, low pressure drop
- Superior, physical stability
- Organic fouling resistance, high operating capacity
* For potable water applications, the resin must
be properly pre-treated, usually by multiple exhaustion and regeneration
cycles, to insure compliance with extractable levels. |
| |
 |
| |
| PRESSURE DROP — The graph above shows the expected pressure loss per foot of bed depth as a
function of flow rate at various temperatures. |
| |
 |
| |
| BACKWASH — After each cycle the resin bed should be backwashed at a rate that expands the
bed 50 to 75 percent. This will remove any foreign matter and reclassify the bed. The graph above shows the expansion
characteristics of ProSelect™ Silica in the chloride form. |
| |
Note: These suggestions and data are based on
information we believe to be reliable. However, we do not make any guarantee or warranty. We caution against using these
products in any unsafe manner or in violation of any patents. Further, we assume no liability for the consequences of
any such actions. |
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