Skip to main content

Turning your Digesters into Cash Cows, Accepting High Strength Organic Wastes into the Digesters makes Financial Sense

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial


Anaerobic digesters are normally considered a necessary evil in the facilities that operate them; A do-not-touch attitude to the operation of the digesters has always been observed. As long as they are working “we don't touch them” is the standard for most utilities. Grease and other high strength organic wastes are normally nightmares at the wastewater treatment facilities. They clog the sewers, increase the maintenance and stink the entire facility.

This project will show that properly handled the nightmare and the necessary evil can become the main attraction and produce a benefit for the utility in more ways than one. High strength organic wastes released into the sewer system through legal and illegal operations, reduce the capacity of the sewer system and increase the cost and maintenance. Once at the treatment plant, these organic loads decrease the capacity of the treatment plant and increase the operational costs and maintenance. Pound-per-pound, grease has twice as much aeration demand than normal sewage solids.

The City of Waco owns and operates the Waco Metropolitan Area Regional Sewer System (WMARSS) wastewater treatment facility. This facility operates four 2-million gallon anaerobic digesters. The City is also home to several industrial facilities that discharge high strength organic wastes into the sewer system.

This project was developed by the WMARSS staff to identify the parameters of operation and the capacity available in the digestion system to bring these organic wastes into the digesters in concentrated form and obtain the anaerobic digestion gas benefit from the anaerobic degradation of these materials.

Document Type: Research Article


Publication date: January 1, 2007

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 These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial 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