THE VORTEX DROP STRUCTURE IMPLEMENTATION FOR …

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THE VORTEX DROP STRUCTURE IMPLEMENTATIONFOR ODOR AND CORROSOIN CONTROLWilliam P. Moeller, Jr., , Eugene Natarius, council Environmental Services3565 Kennebec DriveEagan, Minnesota 55122-1036ABSTRACTHydrogen sulfide gas emissions cause extensive corrosion and odor problems in wastewaterconveyance and treatment systems. A significant source of these emissions is from drop struc-tures such as interceptor drop maintenance holes, forcemain discharges, joint structures, and wetwell drops in sewer pumping stations. The VORTEX Drop STRUCTURE (VDS), invented by EugeneNatarius, is an effective energy dissipater and aerator, which considerably improves the dropstructure. It dissipates the flow energy and aerates the wastewater, preventing emission of odor-ous gases, oxidizing the hydrogen sulfides, and protecting the drop STRUCTURE from corrosion andabrasive council Environmental Services, a regional public agency serving the Minneapolis/St.

INTERCEPTOR DROP IMPROVEMENTS The Metropolitan Council Environmental Services (MCES) has used the new vortex method to control odor and improve collection system flow drop structures situated on main interceptors.

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