Skip to main content

Performance of a Pilot Scale AnMBR Digesting WAS

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

This research was conducted to assess the feasibility of using AnMBRs for WAS treatment by evaluating the performance of the membrane when subjected to conventional versus higher loading conditions, identifying changes in sludge characteristics with process conditions and assessing their influence on membrane performance. Under normal loading conditions (15 day HRT and 30 day SRT), stable membrane operation at an average flux of 40±3.6 LMH was observed when the digester was fed with polymer-dosed TWAS and digester TSS concentrations were maintained less than 15 g/L. Above this solids concentration a decline in flux to 24.1±2.0 LMH was observed even with polymer-dosed TWAS. During this period the introduction of a fouling control strategy that was new to tubular membranes, an intermittent mode of operation (i.e. 5 minutes permeation and 1 minute relaxation) significantly increased the flux from 24.1±2.0 to 37.9±3.8 LMH for a neutral membrane and from 27.5±1.9 to 50.5±3.8 LMH for a negatively charged membrane. As the process was shifted into the higher loading condition (7 day HRT and 30 day SRT), the concentrations of TSS, filtered COD, filtered protein and filtered carbohydrates increased by 50, 70, 64, and 70% respectively. This resulted in reduction of the membrane's critical flux by 60% from the normal loading conditions. The study clearly indicates that it is technically feasible to employ AnMBRs for concurrent WAS digestion and thickening.
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: AnMBR; critical flux; high rate digestion; membrane fouling; sludge digestion

Document Type: Research Article

Publication date: 2009-01-01

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 These proceedings are not peer reviewed.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