Skip to main content

Influence of Loading/Decanting Patterns on Sludge Properties and Membrane Fouling in Membrane Bioreactors Treating Synthetic Early Planetary Base Wastewater

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Abstract:

This research studied the influence of membrane bioreactor (MBR) loading/decanting patterns on sludge properties and membrane fouling. Two MBRs, one with continuous loading/decanting (cMBR) and the other with batch loading/decanting (bMBR), were setup and operated in parallel treating synthetic Early Planetary Base Wastewater (EPBW) and generate sludge mixed liquor that was used in batch filtration tests to characterize membrane fouling. During the MBR operation, the concentration of extracellular polymeric substances (EPS), floc size distribution, viscosity, and zeta potential of the sludge mixed liquor in the two MBRs were compared. The results showed that the bMBR generated sludge with lower EPS concentrations, larger flocs, lower viscosity, and lower zeta potential as compared to the cMBR, suggesting bMBR sludge could result in reduced membrane fouling. The sludge mixed liquor in the two MBRs were used for both cross flow filtration with constant transmembrane pressure and submerged filtration with constant transmembrane flux. A microfiltration (MF) membrane and an ultrafiltration (UF) membrane were used in all the filtration tests. Consistent with the sludge property results, both cross flow and submerged filtrations suggested that sludge mixed liquor in the bMBR resulted in lesser membrane fouling. This study showed that membrane fouling could be reduced by designing MBRs with more appropriate loading/decanting patterns.

Keywords: LOADING/DECANTING PATTERN; MEMBRANE BIOREACTOR; MEMBRANE FOULING; SLUDGE PROPERTIES

Document Type: Research Article

DOI: https://doi.org/10.2175/193864707787168657

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 These proceedings are not peer reviewed.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
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