61st Great Plains Waste Management Conference

Robbie Baker, P.E., will attend this Great Plains Conference, and present “Sampling and Modeling to Define Design Criteria for Grit Removal Facilities at the Des Moines Metro Water Reclamation Agency.

In 2015, the influent and effluent of the aerated grit chamber facilities were sampled with the assistance of Black Dog Analytical. Samples were tested to determine an influent grit particle distribution.The facility planning process resulted in the selection of stacked tray grit removal equipment to replace the aerated grit chambers.This equipment will be combined with hydrocyclones and grit washers for dewatering and washing. CFD modeling was used during facility planning to evaluate grit removal technologies and during preliminary design to evaluate the influent distribution channel layout.