Skip to main content

The Anaerobic Membrane Bioreactor (ANMBR) Process and the First Year of Full-Scale ANMBR Operation Treating Salad Dressing Wastewater

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

An existing anaerobic process, upgraded to an anaerobic membrane bioreactor (AnMBR) system, was commissioned in July 2008 to treat wastewater produced from salad dressings and barbeque sauce. Upgrading to an AnMBR provided additional capacity for flow and organic load beyond the original anaerobic system design parameters. Lack of space and superior economics made the conversion to an AnMBR an attractive option.

The first year of AnMBR operation has shown that the system is very suitable for treating this high-strength industrial wastewater; it provides COD, BOD, and TSS removals in excess of 99.5 percent. Throughout the first year of operation, the AnMBR effluent BOD and TSS concentrations were consistently less than 25 mg/l and 2 mg/l, respectively, while influent BOD and TSS concentrations averaged 18,000 and 11,500 mg/l, respectively. The AnMBR system provides superior performance and a very low rate of membrane fouling, with the aid of biogas scour across the membrane surface. The change in transmembrane pressure was negligible over the first twelve months of operation (actually, there has been no transmembrane pressure change at the time of writing - 20 months after start-up) and has required no citric acid cleaning events while operating at a membrane flux rate ranging from 0.05 to 0.10 m3/m2-d (design flux of 0.10 m3/m2-d) and a MLSS concentration up to 45,000 mg/l.

Upgrading the existing anaerobic treatment process to an AnMBR was considered the best choice. It has reduced operating and maintenance costs, provides stable operation, produces excellent quality anaerobic effluent, and removes the strain on the existing aerobic process. Biogas produced in the anaerobic system is used to heat the anaerobic system, as well as heat for the wastewater treatment facility.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: Anaerobic; biogas; compact footprint; effluent quality; fouling; membrane cartridges; upgrade

Document Type: Research Article

Publication date: 2010-01-01

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