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Fouling potential evaluation of soluble microbial products (SMP) with different membrane surfaces in a hybrid membrane bioreactor using worm reactor for sludge reduction

  • Zhipeng Li
  • , Yu Tian*
  • , Yi Ding
  • , Lin Chen
  • , Haoyu Wang
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • Nanyang Technological University

Research output: Contribution to journalArticlepeer-review

Abstract

The fouling characteristics of soluble microbial products (SMP) in the membrane bioreactor coupled with Static Sequencing Batch Worm Reactor (SSBWR-MBR) were tested with different types of membranes. It was noted that the flux decrements of S-SMP (SMP in SSBWR-MBR) with cellulose acetate (CA), polyvinylidene fluoride (PVDF) and polyether sulfones (PES) membranes were respectively 6.7%, 8.5% and 9.5% lower compared to those of C-SMP (SMP in Control-MBR) with corresponding membranes. However, for both the filtration of the C-SMP and S-SMP, the CA membrane exhibited the fastest diminishing rate of flux among the three types of membranes. The surface morphology analysis showed that the CA membrane exhibited more but smaller protuberances compared to the PVDF and PES. The second minimums surrounding each protruding asperity on CA membrane were more than those on the PVDF and PES membranes, enhancing the attachment of SMP onto the membrane surface.

Original languageEnglish
Pages (from-to)111-119
Number of pages9
JournalBioresource Technology
Volume140
DOIs
StatePublished - Jul 2013

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Interaction energy
  • Membrane bioreactor (MBR)
  • Membrane surface properties
  • Soluble microbial products
  • Worm reactor

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