Skip to main content

Impacts of System Operation and Organic Loading Rate on Membrane Fouling and Sludge Production in Pilot-Scale Flat-Plate MBR Treatment of Potato Processing Wastewater

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

A two-year research study was undertaken to demonstrate and optimize the performance of a two and three-stage high-rate membrane bioreactor (MBR) system treating primary clarified potato processing wastewater. Organic loading rates (OLRs) ranged from 1.4 to 6.7 kg COD/m3·d (0.8 to 3.9 kg BOD/m3·d), F:Ms from 0.15 to 0.66 kg COD/kg MLSS·d (0.1 to 0.46 kg BOD/kg MLVSS·d), and hydraulic retention times (HRTs) from 0.5 to 2.3 d. Even at high loading rates and low HRTs, the MBR process produced excellent effluent quality, with effluent concentrations less-than-detectable on a consistent basis for BOD, TSS, and NH3-N (i.e., removals were virtually 100 percent for these parameters). Nitrogen removal averaged 96 percent in three-stage operation at an HRT of only 17.5 h for an influent TKN concentration of 230 mg/l, without the need for a specific unaerated anoxic stage.

Increased operating temperature (from mechanical friction at increased aeration intensity and exothermic aerobic biological activity) helped enhance performance and lower sludge production at higher loading rates. Venturi aeration was used in the initial pre-aeration stage(s) to provide adequate oxygen transfer. This type of aeration combined with the high volumetric power densities applied in the initial stage of the process provided enhanced shear of the biological floc which also appeared to aid in decreasing sludge production.

Membrane fouling was not significantly impacted by the enhanced shear and relatively high loading rates. This was presumably due in part to the staging of the process (i.e., more plug flow), and lower volumetric power densities in the membrane tank (which enhanced biological reflocculation).
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: 2007-10-01

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 These proceedings are not peer reviewed.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