New Solution for Odor Control

Due to an increasing number of resident complaints, the City of Missoula received an Order to Take Corrective Action from the Missoula City-County Health Department regarding odors from EKO Compost and the City’s Wastewater Treatment Plant (WWTP). The order required the city to complete an odor-characterization study and submit a plan for corrective action which recommended improvements to the WWTP Headworks and aerated grit chamber, which were the largest single source of odors at the plant.

Replacement of the Headworks required that the existing headworks facility remain in service until the new facility was put on line. This necessitated construction of the new facility in a very small footprint, surrounded by existing plant process units and directly adjacent to the Clark Fork River.