Thank you for your post. It was most helpful. If you have time, I am interested in any information you can provide for the Bag Filter. BTW - are you familiar with Pureflow removal systems (www.pfdiv.com)? They have a system that is treating water in Yuma Arizona, which is some 12 miles down...
progressive Cavity or other positive displacement pumps are readily available and can push very high solids concentrations. Moyno makes a number of different models.
We are looking into treatment of 270 gpm groundwater well with Fe (10 ppm) and Manganese (5 ppm). I am considering a pressurized manganese greensand filtration system with NaOCl (preoxidation of iron). KMNO4 is added at backwash for re conditioning of the media, and an orthophospate is added...