I would suggest ozonisation ...

I would suggest ozonisation it will oxidise it to higher state and thus makes it easily filterable..Ozonation with our nanobubble technology which helps in more than 90 percent dissolution in water thus making it extremely cost effective and very low capacity requirement of ozone equipment...making it very cost effective and very low or negligible OPEX costs...no addition of chemicals chemicals and if at all RO used it is equally beneficial for RO memberanes too...