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- Title
Irreversible Fouling During Multicycle Microfiltration of Wastewater Effluent.
- Authors
Huifeng Shan; Neufeld, Ronald D.
- Abstract
This study focused on irreversible fouling during microfiltration of primary and secondary effluents from municipal wastewater treatment plants. Flow resistances were calculated from the sum of clean membrane resistances, resultant cake layer resistances, and consequent irreversible fouling resistances. Results from a dead-end cell experimental system showed that the accumulated cake resistance was dominating for microfiltration of primary/secondary effluents. Suspended solids in the primary and secondary effluents had a similar compressibility index, n, with a value of approximately 0.5, indicating that they were moderately compressible particles. The value of irreversible resistance is dependent on the intensity of membrane cleaning; however, for a given membrane cleaning strategy, this value steadily increased and reached a maximum after approximately 6 cycles of filtration and cleaning. This study provided an explanation for the significant drop of throughput flux in the early application of membrane processes, and a plateau flux approached correspondingly.
- Subjects
FOULING; MEMBRANE separation; INDUSTRIAL wastes; SEWAGE disposal plants; FILTERS &; filtration; SEPARATION (Technology)
- Publication
Water Environment Research (10614303), 2007, Vol 79, Issue 13, p2527
- ISSN
1061-4303
- Publication type
Article
- DOI
10.2175/106143007X212175