How do tannin resins (sometimes called organic scavengers) work?
Would you believe no one has all the answers to this question? Tannin resins are made in many different variations. Some work on an ion exchange principal, and some work through adsorption. Some even work as a mechanical filter. Most tannin resins work using more than one method. SWT has tried a variety of resin designs before choosing a resin that seemed to give us the best results in the field. We designed our resin and systems with an eye on why most other tannin systems fail. We built a resin that would not fall apart in southern climates; one that could withstand iron, and be easily cleaned because it had to be used in Heme iron applications. As technology advanced we found a resin that actually pulled organic matter from the water in an additional method separate from its ion exchange capability. Q: How do you size a residential tannin removal system? A: Since there is no accurate, cost effective way to measure tannins, there is no absolute rule with unit sizing other than trial
