A mixed bed of iodine source/iodine capture resin provides high flow rates
that are useful for treatment of water. The ratio of source/capture resin
can be adjusted to meet the goals of the system. If insufficient iodine is
being provided, the source resin amount can be increased relative to the
capture resin. If excess iodine or iodide are found in the treated water,
the capture resin amount can be increased relative to the source resin.
The release of iodine from the source resin and its effectiveness can be
significantly enhanced by using a mixed bed system in which one or both of
the source and the capture ion exchange resins have had their exchange
sites saturated with the anion of an organic acid such as citrate and/or
isocitrate. This significantly increases the amount of iodine released
into aqueous solution and enhances the disinfecting power of that iodine.
