Floating Bed Gel Strong Basic
Polystyrene Anion Exchange Resin


201X7FB, aka 717FB, is a premium grade gel-structured strong-basic styrene-based anion exchange resin of the type Ⅰ functional group which contains quaternary amine, synthesized by special technology. Characterized by its high ratio of whole beads, excellent regeneration efficiency as well as good rinse performance against mechanical and osmotic impact, this resin is optimally specialized in removing both the ‘strong and weak’ acids anions from minerals within wastewater or raw water.

For its extra fine selectivity and high exchange capacity, 201X7FB model is primarily placed within the anion-bed, following the cation-bed filled with 001X7FB where raw water passes through first. Such two ion-exchange columns are placed in parallel by raw water reverse flowing into so as to form a composite floating bed backflushing water-processing system within various industries for precise demineralization, pure-water &ultrapure water preparation, wastewater treatment such as the separation of anionic metallic complexes, heavy-metal pollutants, organic toxicants, inorganic minerals, etc.

Matrix: Styrene-divinylbenzene copolymer
Functional groups: -N+ (CH3)3
Physical form: Light yellow transparent spherical beads
Moisture holding capacity(%): 45 to 54%
Ionic form as shipped: Cl form
Total mass exchange capacity: ≥3.6mmol/g
Total bulk exchange capacity: ≥1.3mmol/mL
Moisture true density: 1.07~1.10g/mL
Moisture bulk density: 0.67~0.73g/mL
Particle size: 0.45~1.25mm
Uniformity coefficient: ≤1.6
Integrated beads ratio after grinding test: ≥90℅
Max swelling rate of resin after ionic state transition: Cl ->OH: 25%
Maximum operating temperature: 60°C
Minimum bed depth: 700mm
Service flow rate: 5~25 BV*/h
Maximum service velocity: 40 m/h
Regenerant: NaOH
Level(Counted by 100%): 60~150g/L
Concentration: 2~4℅
Flow rate: 2~8 BV*/h
Minimum contact time: 40min
Slow rinse: 5~8 BV at regeneration flow rate
Fast rinse: 10~20 BV at service flow rate
*1 BV(Bed Volume)= 1 solution per resin