Iron Water Treatment Filter
Overview
The iron filter consists of a mineral tank filled with carbon and greensand (the substrate), a control head to regulate regeneration, and a potassium permanganate (Potperm) reagent tank for regenerating.
The filter works by oxidizing dissolved iron and manganese from the water through the use of a strong oxidant, and trapping the oxidized, solid form in the filter media.
During the regeneration cycle oxidized iron and manganese, plus any sediment delivered from the well, are flushed to waste and the Potperm is replenished.
The regeneration cycle consists of 4 stages: backwash, brine draw, regenerant rinse, and brine fill.
- The backwash cycle runs water backwards through the system to flush out oxidized iron and manganese and any sediment from the well.
- The brine draw cycle fills the tank with Potperm oxidant to coat the substrate.
- The regenerant rinse flushes out any non-adsorbed Potperm.
- The brine fill adds water back to the reagent tank so it is ready for the next cycle.
Regeneration frequency is based on gallons of water treated, and the control head display alternates between the time of day and gallons of water until the next regeneration is indicated.
Maintenance
GeoWater recommends an annual service to maintain the system. This includes testing the mechanical and electronic components, field testing the water to assess functionality, checking reagent consumption, replacing the filter pad, and adding Potperm to the reagent tank.
Customer Responsibility
The iron filter has a clock which will need to be reset after power outages. The programming is maintained and the unit will still regenerate on schedule, but if the clock is off by more than an hour regeneration cycles can interfere with normal water usage. Heavy water use during regeneration can lead to low water pressure, pink water at the tap, or contaminant release to the house. Reset the clock by holding the up or down arrow until the correct time is set. There is an am indicator but no pm indicator.
