Abstract
This paper investigated the effect of food to microorganisms (F/M) ratios in the MBRs on membrane fouling propensities at fluxes of 10, 20, and 30 L/m2 hr (LMH). The high F/M-MBR had different biomass properties, more soluble extracellular polymeric substances (EPS), and faster fouling rate compared to the low F/M-MBR. However, the fouling mechanisms at the three fluxes were dissimilar. At a low flux, the microbial flocs dominant cake layers facilitated catching the soluble EPS to increase resistance. At a high flux, the great accumulation of soluble EPS (especially soluble polysaccharides) to form gel-like cake layers predominantly induced membrane fouling. Supplemental materials are available for this article. Go to the publisher's online edition of Separation Science and Technology to view the free supplemental file.
| Original language | English |
|---|---|
| Pages (from-to) | 840-848 |
| Number of pages | 9 |
| Journal | Separation Science and Technology |
| Volume | 48 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Mar 2013 |
| Externally published | Yes |
ASJC Scopus Subject Areas
- General Chemistry
- General Chemical Engineering
- Process Chemistry and Technology
- Filtration and Separation
Keywords
- adenosine triphosphate (ATP)
- extracellular polymeric substances (EPS)
- fouling rate
- soluble polysaccharides
- transparent exopolymer particles (TEP)