Skip to main content


Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Odor control of combined sewer collection systems where transport and storage is principally by tunnels presents a challenge to municipalities because of the infrequent but often noxious emissions from venting structures. So long as flow levels are low to average, entrained air exhausted from these large diameter “pipes” can be effectively dispersed with proper ventilation design. But with low flow rates, particularly during dry or near-drought conditions, near full strength wastewater can turn septic resulting in very malodorous releases. This is most evident during initial, “first flush”, rain events where tunnel levels, flow rates and air volumes can change rapidly resulting in large odor-laden air displacement.

During the early operating months following the start-up of its Nancy Creek Tunnel in 2006, the City of Atlanta experienced complaints from residents and commuters near two vent points on the upper reaches of the 16-foot (4.9 m) diameter, 44,000 linear foot (13.4 km) hard rock “interceptor” especially immediately following heavy rain events before stormwater dilution naturally reduced odor intensity. Using temporary solid media odor control systems, the City quickly responded to treat the releases. While continuing to “pilot” the solid media technology in the temporary systems, the odor constituents were sampled and analyzed along with monitoring air flow cycles from the tunnel's vents which were identified as the offending exhaust points.

Employing prior pilot history along with the on-site operating experience and with odor control system vendor assistance, life cycle costs were computed pitting solid media against bio-filters for a permanent solution to the problem. Passive odor control systems were then designed and installed at both sites that were cost effective, low maintenance, required no additional site utilities, and were aesthetically acceptable.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 2007-01-01

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
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