Skip to main content

THE VORTEX DROP STRUCTURE IMPLEMENTATION FOR ODOR AND CORROSOIN CONTROL

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Abstract:

Hydrogen sulfide gas emissions cause extensive corrosion and odor problems in wastewater conveyance and treatment systems. A significant source of these emissions is from drop structures such as interceptor drop maintenance holes, forcemain discharges, joint structures, and wet well drops in sewer pumping stations. The Vortex Drop Structure (VDS), invented by Eugene Natarius, is an effective energy dissipater and aerator, which considerably improves the drop structure. It dissipates the flow energy and aerates the wastewater, preventing emission of odorous gases, oxidizing the hydrogen sulfides, and protecting the drop structure from corrosion and abrasive wear.

Metropolitan Council Environmental Services, a regional public agency serving the Minneapolis/St. Paul area, successfully implements the VDS. Four installed VDS have been working on main interceptors with no odor complains from the public. The cost of chemical feed for odor control has been significantly reduced, and the structures are virtually maintenance-free. Additional VDS installations are in progress at a pumping station wet well, and on a forcemain discharge.

Testing to measure VDS effectiveness was performed at two installations. The analysis of multiple wastewater samples taken simultaneously upstream and downstream of the Vortex Drop Structures shows a significant decrease of dissolved hydrogen sulfides and a sharp rise in the dissolved oxygen concentrations downstream of the structures. The results of air quality monitoring around VDS installations indicate a strong effectiveness. Odor complaints from adjacent homeowners have virtually disappeared.

Document Type: Research Article

DOI: https://doi.org/10.2175/193864700784545577

Publication date: 2000-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more