What is the best method to remove Manganese and Iron?

We are looking for the best  and cheapest method for treating borehole water for commercial purpose.The borehole yield is 15 cubic meters per hour. From the recent water quality test carried out, the results indicated high levels of manganese, iron, colour and turbidity. From studies, it seems the cheapest method is by oxidation . Can we go for this option? If yes, what are the best filtration methods to adopt. Your advice much appreciated.