Strong Base Anion Exchange Resin
Type I or Type II strong base anion exchange resin with quaternary ammonium functional groups, used for complete demineralization paired with strong acid cation resin, silica and CO2 removal, and nitrate removal from drinking water. Regenerated with sodium hydroxide solution. Available in gel and macroporous structures to suit different water quality applications.
Technical Specifications
| appearance | Pale yellow to cream spherical beads |
| particle size | 0.4–1.25 mm (≥95%) |
| functional group | Quaternary ammonium (Type I or II) |
| matrix structure | Gel or macroporous polystyrene-DVB |
| moisture content | 40–55% |
| operating pH range | 0–14 |
| total exchange capacity | ≥1.0 mmol/mL (OH form, wet volume) |
Applications
- Two-bed demineralization paired with SAC resin
- Mixed-bed polishing for ultra-pure water production
- Drinking water nitrate removal systems
- Silica removal from boiler feedwater
- Pharmaceutical and semiconductor process water treatment
Key Features
- Removes anions including chloride, sulfate, nitrate, and silica
- Type I offers greater chemical stability; Type II provides higher capacity
- Macroporous grade handles organically fouled or high-color feed waters
- NaOH regenerable for long operational service life
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