Skip to main content

Enhanced Lipid Degradation in Upflow Anaerobic Sludge Blanket Reactor by Integration with Acidogenic Reactor

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

This work was conducted to investigate the lipids inhibition and their degradation in dairy wastewater treatment. Two-phase system, composed of an acidogenic continuously stirred tank reactor (CSTR) and an upflow anaerobic sludge blanket (UASB) reactor was compared with a single phase system, conventional UASB reactor. The systems were operated up to organic loading rate of 8.09 g COD/L/d and lipid loading rate of 2.94 g COD/L/d. The two-phase systems showed higher COD removal (1.19 times), lipids removal (1.92 times) and CH4 production (1.42 times) than the single-phase system. Degradation of lipids and saturation of the double-bonded lipids in the CSTR led to the enhanced system performance. However, the CSTR performance decreased at the acidogenic HRT below 0.27 d owing to insufficient biomass retention. In serum bottle tests at different lipids concentration, high lipids concentration resulted in long lag-phase time for CH4 production. However, 69.5% of TCOD was eventually converted to CH4 within 50 days, even at the highest lipids concentration (6.1 g COD/L). It meant that the lipids inhibition was not bacteriocidal but reversible.
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: 2006-01-01

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 These proceedings are not peer reviewed.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