You cannot use RO if the water ciontains Fe and Mn as they will poison the membrane. Also when you say coagulation what exactly are you going to coagulate, If Fe is divalent (Fe++) then you need to oxidise it first befiore you can filter it, and it doesn't need a coagulant as a simple SAND-FILTER will do the work just fine.
Published by George Kafasis, Chemical Engineer (BSc,MSc)
You cannot use RO if the water ciontains Fe and Mn as they will poison the membrane. Also when you say coagulation what exactly are you going to coagulate, If Fe is divalent (Fe++) then you need to oxidise it first befiore you can filter it, and it doesn't need a coagulant as a simple SAND-FILTER will do the work just fine.