In December 2010, WLA Consulting permormed a Life Cycle Cost Analysis (LCCA) at Duncan Aviation for the wastewater treatment equipment anticipated for three treatment scenarios and three economic scenarios, resulting in nine total life cycle options. The final analysis revealed taht the most cost effective solution included a wastewater evaporation system with both a primary and secondary evaporation system that ultimately reduces wastewater to solid waste.
Duncan Aviation decided to build a new paint hangar, Paint Hangar 4, at its facility in Lincoln, Nebraska at the Lincoln Municipal Airport. This project consisted of approximately 54,400 square feet of paint hangar bays, office support spaces and other necessary operational equipment areas. (WLA Consluting, Inc. designed an evaporator for Duncan Aviation’s wastewater.) The Wastewater Treatment Area provides operational support by receiving and treating the wastewater produced during the aircraft painting process.
Wastewater entering the wastewater treatment area is contained in a collection pit and will flow into one of three 3,000 gallon storage tanks.
From the storage tanks, the water is chemically treated and then flows into an evaporator. In the evaporator, the temperature will rise until water begins to boil and evaporate. When the water level is low enough, the left over sludge is sent to second evaporator, where it becomes a solid waste that can be disposed of.