Skip to main content

BIOLOGICAL TREATMENT OF COLLECTION SYSTEM ODORS IS THE MOST COST EFFECTIVE SOLUTION

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

The Collier County Wastewater Department currently operates three water reclamation facilities and over six hundred lift stations. Pumping stations located at the extremities of the collection system are often times situated in residential and commercial areas. Due to the flat topography of the service area, the collected wastewater is commonly repumped at several locations before it finally reaches a treatment facility. Long residence times in the collection system, in combination with high temperatures result in the generation of odorous and corrosive gases in the wastewater stream. If no preventive measures are taken these gases are released into the atmosphere at lift stations and manholes and can result in an odor nuisance for neighboring residents and businesses.

In 2001 and 2002, the Collier County Public Utilities Department and Camp Dresser & McKee Inc. performed a study to investigate the potential for odor and corrosion build-up in the County's sewer collection system. The primary objectives of this study were to: identify potential problem locations in the collection system; and evaluate several liquid stream and air stream treatment technologies for their applicability at sewer pumping stations. A total of 119 lift stations were sampled for liquid and vapor phase constituents related to the generation of odors in the collection system, most notably dissolved sulfides, pH, and hydrogen sulfide.

This paper focuses on the evaluation of different air stream treatment technologies for the prevention of odors and corrosion in sewer collection systems based on the findings from the Collier County Odor and Corrosion Control study. Five different fixed media technologies, including activated carbon, biofilters, bio-trickling filters, iron sponge, and iron sponge followed by activated carbon, were tested in the field for their ability to prevent odor and corrosion in the collection system. Air samples were taken at the inlet and outlet of each air stream treatment device and analyzed for chemical compounds and odors. The different technologies were ranked according to their ability to remove hydrogen sulfide and odors from the treated air. Each of the technologies was then subjected to a twenty year present worth analysis based on the inlet hydrogen sulfide concentration and the airflow. A matrix was developed to identify the lowest cost technology for foul air treatment based on the inlet hydrogen sulfide concentration and the airflow rate.

The study concluded that biofiltration achieves the highest odor removal efficiency of all technologies tested. Single-use activated carbon has a distinct cost advantage over all other technologies tested for inlet hydrogen sulfide concentrations of less than 5 ppm. Biofiltration becomes the technology of choice when the average hydrogen sulfide concentration exceeds 5 ppm at airflows equal or greater than 250 cfm.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2004-01-01

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