Macroporous Polyacrylic Strong-Base Anion-Exchange Resin for NOM & Tannin Removal


KPA-D730 is a macroporous strongly alkaline anion-exchange resin, with polyacrylic matrix crosslinked with divinylbenzene(DVB). By its specially-developed polymer structure and functional groups, KPA-D730 outperforms other models at exchanging large amounts of organic matters, with the general adsorption rate up to 80~95% and elution rate over 95%.

Taking advantage of its excellent removal of organic matter, efficient regeneration as well as good resistance to organic fouling, KPA-D730 can compete and replace the common-used activated carbon granule(ACG) to decolorize and refine some transparent colored liquids, and also to remove natural organic matter(NOM) from aqueous solutions, for its superiority of low treatment cost, easy-regeneration, and essentially for its eco-friendly feature.

The principle applications of KPA-D730 mainly include yet not limited to organic scavenger, TOC/organics removal or tannin removal, and free acids and alkali radicals if any. Hereby it has been widely applied in various industries, mainly serving the water-treatment engineering of surface water, groundwater, lake &river or infiltration-wells, or drinking water, and also the demineralization, decolorization &deodorization process in F&B, and more alike.

Matrix: Polyacrylic crosslinked with
Physical form: Macroporous Milky-white Opaque Spherical Beads
Functional group: Quaternary Ammonium(NR4)
Moisture holding capacity(%): 65 to 75%
Ionic form as shipped: Cl
Total bulk exchange capacity: ≥0.8mmol/ml
Moisture true density: 1.03~1.10g/ml
Moisture bulk density: 0.65~0.72g/ml
Particle size: 0.45~1.25mm
Uniformity coefficient: ≤1.6
Integrated beads ratio after grinding test: ≥95℅
Max Swelling Rate of Resin after Ionic
State Transition:
Cl->OH ≤25%
Maximum operating temperature: 80°C
Applicable PH range: 1~14
Minimum bed depth: 700mm
Service flow rate: 30~60BV at 2.0~4.0BV/h
Operating velocity: 10~25 m/h
Regenerant: NaCl
Level(Counted by 100%): 2.5~3.5BV
Concentration: 10℅
Flow rate: 1.5~2.0BV/h
Contact time: 40~60min
Slow rinse: 3~4 m/h with demineralized water
Fast rinse:10~25 m/h with demineralized water
Displacement Flow Rate:1.5~2.0BV at 1.0~2.0BV/h
Backwashing Flow Rate:1.5~2.0BV at 2.0~4.0BV/h
*1 BV(Bed Volume)= 1m3 Solution per m3 Resin