James, Insoluble Fe that ...
Published by David Cifuentes, Edible Fats and Oils, Industry Manager at Flottweg Separation Technoloy
James,
Insoluble Fe that has already precipitated will act like TSS. It will be largely filtered by the resin. It will increase TSS to the extent of it's concentration and be removed during a proper backwash.
Soluble Fe that has not been oxidized will exchange on the resin, just like Ca or Mg. In fact, due to it's greater valance, it will exchange before Ca or Mg. So, it needs to be considered when sizing a softener as it takes up exchange capacity. Also, Fe is not as easily removed during regeneration. Depending on how much Fe, it may be wise to investigate a resin cleaner to use during backwash/regen.
1 Comment
I belive 1ppm of iron = 4grains?
Published by Peter Makarichev
1 Comment
That is the number I've used. I used 4 for Mn also, though I'm not sure if they are equivalent.
Published by David Cifuentes, Edible Fats and Oils, Industry Manager at Flottweg Separation Technoloy