Floating-bed Macroporous-typeⅡ
Strongly Basic Styrene-based Anion Exchange Resin


D202FB is a premium grade macroporous strong-basic styrene-series anion exchange resin of type II functional group that links dimethylethanolamine, synthesized by advanced technology. Characterized by the high intensity of the polymerized matrix and solid structure of its chemosynthetic macropores, excellent regeneration efficiency as well as strong rinse performance, this resin is specialized in removing both strong and weak negative-polar organic anions &non-polar organic molecules as well as acids radicals of inorganic salts, with rather higher exchange capacity than equivalent model D201FB during operation.

For achieving goal of ultrapure water preparation, D202FB can be the fair alternative to be filled within the anion-bed of the floating-bed reverse-flow deionization system, which is in parallel, post-connected with the cation-bed filled with strong-acid cation-resin model. Moreover, by being filled with matched models of required performance, the two exchange columns cowork in sequence to serve more complex purposes: water demineralization, wastewater treatment such as the separation of anionic metallic complexes, heavy-metal pollutants, organic toxicants, inorganic minerals, etc. 

Upon reaching saturated after each service cycle, likewise the resin beads can be desorbed and regenerated by being reverse flowed with eluent and regenerant solutions, followed by backflushing with clean water for impurities removal. Such composite-configured floating-bed water treatment system has been widely used for processing over 18MΩ·cm ultrapure water yield out of organic effluent within various industries such as metallurgy, chemical engineering, electricity, electronics, semiconductors, food, cosmetics, medicine &pharmaceuticals, and the like.

Matrix: Styrene-divinylbenzene copolymer
Functional groups: -(CH3)2NCH2CH2OH
Physical form: Opalescent opaque spherical beads
Moisture holding capacity(%): 50 to 56%
Ionic form as shipped: Cl form
Strong group exchange capacity: ≥3.85mmol/g
Total bulk exchange capacity: ≥1.25mmol/mL
Moisture true density: 1.07~1.10g/mL
Moisture bulk density: 0.65~0.73g/mL
Effective particle size: 0.50~0.70mm
Particle size: 0.45~1.25mm
Uniformity coefficient: ≤1.5
Integrated beads ratio after grinding test: ≥95℅
Max swelling rate of resin after ionic state transition: Cl ->OH : 25%
Maximum operating temperature: 60°C
Minimum bed depth: 700mm
Service flow rate: 10~20 BV/h
Maximum service velocity: 25 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: 2 BV at regeneration flow rate
Fast rinse: 4~8 BV at service flow rate
*1 BV(Bed Volume)= 1 solution per resin