At a Water Reclamation Facility (WRF) in Maryland, a dozen Landia submersible mixers have finally had their motors replaced after nearly 20 years of service yet the original stainless steel propellers are still intact and set for another lengthy spell in the plants oxidation ditches.
Soren Rasmussen, Director at Landia Inc., added: We are very proud of the Landia mixers performance, especially to see the stainless steel propellers unworn after nearly two decades. This is a familiar picture we see in many plants across the US, where reusing our mixers original propellers represents a big saving for customers, when a plant undergoes an upgrade.
So much so that Landia is now offering a 20-year warranty on its stainless steel propellers.
Landias model POPL-I mixers, which are designed to effectively agitate, homogenize and keep solids in suspension, operate at very low propeller speeds to ensure gentle treatment of activated sludge.