Lantec Products

LANPAC^® resistance to plugging demonstrated in a
field test to remove iron from potable water

The Problem
Under the direction of Burns & McDonnell, a nationally known engineering/consulting firm, the city of Willmar, MN conducted a pilot study to determine whether an engineered packed tower could successfully remove 1.96 ppm concentrations of iron from potable water.

Why LANPAC^® Was Chosen
According to Willmar's Superintendent of Water Supply, Bart Murphy, results from their three-month feasibility study proved that iron could be removed effectively and economically utilizing a vertical tower packed with 2.3" LANPAC^®.

Meeting the Requirements
In the burns & McDonnell system, a filtration unit downstream collected the iron oxide that precipitated out of the well water.

LANPAC^® successfully reduced iron concentrations to 0.04 ppm without plugging during the entire 90-day test.

Based on initial encouraging results, according to Willmar's Bart Murphy, four ten-foot diameter packed columns using LANPAC^® will be installed to treat a total water flow of 5,000 gpm.

LANPAC^® features plugging-resistant engineering. Its patented geometry distributes liquid more evenly and completely than other packings.

WILLMAR PILOT PACKED COLUMN TEST SPECIFICATIONS:
Column Diameter	18 inches
Water Flow	20 gpm
Water Temp.	48° F
Air Flow	100 cfm
Packing Height	10 feet
Iron Content (Inlet)	1.96 ppm
Iron Content (Outlet)	0.04 ppm