Village of Random Lake, WI Iron Removal
Project: Catalytic iron removal
Municipality: Village of Random Lake, WI
Watersurplus Contact: Jim Groose, Sr VP Business Development
Problem: The Village of Random Lake, Wisconsin installed a horizontal treatment vessel for iron removal at Well #2 in 1970. This sand and gravel well was permitted by the State of Wisconsin to pump 550 GPM. The typical iron concentration for this well was 0.5 mg/L, and water was treated through a sand and anthracite media. Around 2010, the village noticed that filter media was leaking through the underdrain due to corrosion and partial failure of the horizontal filter underdrain. The village started bypassing the filter because of this underdrain failure but soon started to receive regular complaints about iron in the water.
Solution: Village of Random Lake worked with Kapur & Associates to consider an alternative method of iron removal: our OxiPlus75 catalytic iron removal system with a high surface loading rate. The penta-54” diameter vessel skid resulted in a 6.92 GPM/ft2 loading rate and fit into the existing building after the horizontal vessel was removed. This system uses a sodium hypochlorite feed upstream of the filter to make the catalytic media work to oxidize and remove the iron. This system was installed in May of 2017 and has been consistently removing Fe to less than 0.1 mg/L.