ResinTech Nitrate Selective Specialty Resin

ResinTech SIR-100-HP is a strong base anion exchange resin supplied in the chloride form as moist, tough, uniform spherical beads. It is especially useful in nitrate removal applications due to its ability to remove nitrates preferentially in the presence of sulfates and other divalent ions. The use of ResinTech SIR-100-HP eliminates nitrate dumping and retains a greater degree of its operating capacity in the presence of high levels of sulfates where standard anion resins such as ResinTech SBG1, SBG1P, or SBG2, would suffer loss in operating efficiencies and exhibit nitrate dumping in the presence of sulfates.

* ResinTech SIR-100-HP is also intended for use in applications involving monovalent and divalent ions where the monovalent ion must be removed preferentially, such as in removing perchlorates from ground waters.

Features & Benefits:

• Highest operating capacity of any nitrate selective resin
• NSF/ANSI 61 certified for material safety
• Highly uniform particle size, low pressure drop
• Superior physical stability

Recommended Resins for Specific Contaminants

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 50 to 75 percent. This will remove any foreign matter or fines and reclassify the bed.