Hi Peter, the hard part is ...

Hi Peter, the hard part is making dissolved iron into particles. The particles should be relatively easy to remove by most conventional solid/liquid separation step depending on the particle's density and size. Typically gravity settling is the lowest cost, the sp gr of your particles is likely quite high, though the particle size can be small. Do you have stable colloidal materials that don't settle easily--use of a coagulant to impair the surface charge can clear that up. If you need pristine product water then a polishing filter may be required. Hope this helps. -Dave