Gel Type 2 Strong Base Anion Exchange Resin
Purolite A200 is a clear gel-type strong-base anion exchanger containing Type 2 quaternary ammonium groups. It has excellent operating capacity and good kinetics even when regenerant levels are comparitively low. It also rinses very efficiently after regeneration. It shows good resistance to physical and osmotic shock in normal operation. It is particularly useful in treating feed-waters with a high proportion of Free Mineral Acidity, and in addition it has high reversible sorptive capacity for the complex organic materials, both ionized and un-ionized, which occur in many surface water supplies. Specially tailored size grades may be used with excellent results in most of the usual ion-exchange column configurations, but they are particularly suitable for deionizing waters in counter-flow operation, where, rinse volumes represent a marked improvement over those of the classical Type 2, Purolite A300, for example. In a conventional two-stage deionizing plant, its silica-removal properties are comparable with those of any premium Type 2 strong-base anion exchanger; however, as with other resins of this type, a polishing mixed-bed is necessary to ensure the lowest levels of residual silica.
Application - Demineralization with High Regeneration Efficiency