Skip to main content

Acid Sludge Fermentation Products Vary with the Type of Sludge

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

In this experiment primary sludge (PS), waste activated sludge (WAS) and a mixture of WAS with PS were fermented at 21°C. The sludges were collected from two plants: the biological nutrient removal (BNR) WestEnd Water Pollution Control Center (WEWPCC) and carbon-removal only SouthEnd WPCC (SEWPCC). The batch fermentation test showed that the primary sludge fermentation generated significantly higher amount of soluble COD than WAS. WAS fermentation released considerable amounts of phosphate and ammonium. Co-fermentation of WAS with the PS enhanced soluble COD production as well as increased the release of phosphate and ammonium. The semi-continuous flow fermenters showed that regardless of the sludge source, with a similar total COD load, there was no significant difference in soluble COD production observed during co-fermentation between the two plants. Volatile fatty acids (VFA) were the primary components of the soluble COD generated during fermentation. 20-22% volatile solids destruction was achieved due to sludge fermentation. The WEWPCC sludge released higher concentration of phosphate than the SEWPCC sludge - the latter originating from a non-BNR process. Fermentation of combined sludge from both plants generated concentration of phosphate high-enough to allow phosphorus recovery as struvite.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: Primary sludge fermentation; Volatile fatty acids; Waste activated sludge fermentation; phosphorus release

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 These proceedings are not peer reviewed.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
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