Specialty Resin
SWT logo ProSelect™ Nitrate

ProSelect™ Nitrate represents one of the newest advancements in ion exchange technology. This is one of the first resins to be preferential to nitrates over sulfates and other ions in the water. It removes and then holds onto nitrates so they aren't dumped back into the water supply. This makes ProSelect™ Nitrate the perfect choice to solve nitrate contamination problems in well water applications.

Suggested Operating Conditions
Maximum Temperature 170ºF
Minimum Bed Depth 24 inches
Backwash Rate
50% Bed Expansion		 1.9 gpm/ft² @ 60°F
Regenerant** 10% NaCl and
0.5% NaOH mixture
Regenerant Flow Rate 0.2 to 0.5 gpm/ft³
Regenerant Contact Time At least 60 minutes
Regenerant Level 10 to 15 lbs/ft³ plus proportionate amount
of NaOH
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 Styrene with DVB
Functional Group R–N–R3+X–
Ionic Form, as shipped Chloride
Physical Form Tough, spherical beads
Screen Size Distribution 30 to 50 nominal
    +30 mesh (US Std.) <5 percent
    –40 mesh (US Std.) <2 percent
    –50 mesh (US Std.) <1 percent
pH Range 0 to 14
Sphericity 95+ percent
Water Retention 52 to 60 percent
Solubility Insoluble

Approx. Ship. Wt.

 41 lbs/ft³
Swelling Cl– to OH– Form 12 percent
Total Capacity 0.85 meq/ml min
   

Features:

  • Highest operating capacity of any nitrate selective resin
  • Uniform particle size
  • Low pressure drop, superior kinetics
  • Superior physical stability
  • Low sulfate selectivity and high operating capacity
 
1166 - ProSelect Nitrate Pressure Graph
 
PRESSURE DROP — The graph above shows the expected pressure loss per foot of bed depth as a function of flow rate at various temperatures.
 
1166 - ProSelect Nitrate Backwash Graph
 
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™ Nitrate 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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Safe Water Technologies, Inc.
996 Bluff City Boulevard
Elgin, IL 60120 USA
  
 
Telephone: +1.847.888.6900
Facsimile: +1.847.888.6924
E-mail: info@swtwater.com
http://www.swtwater.com

Last Updated: March 5, 2008