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- Title
Preparation and application of polyvinylidene fluoride/polyphenylene sulfone blending membrane.
- Authors
Chen Guo; Yanbin Yun; Zhenbang Li; Chunli Li
- Abstract
In this study, the effects of PVDF/PPSU blend ratio, polymer concentration and additives (LiCl, MgCl2, PEG-2000) concentration on PVDF/PPSU blending membrane performances were studied by orthogonal experiments, optimal blending membranes were obtained by orthogonal polar difference analysis and were investigated by treating esterification wastewater (pre-processed) through the submerged MBR. The results showed that with PVDF/PPSU blend ratio changed from 9:1 to 5:5, water flux increased but rejection and contact angle decreased, with the polymer concentration changed from 11% to 19%, water flux and contact angle decreased but rejection went up, with the additive concentration increased, water flux and rejection slightly change but contact angle decreased obviously. The best water flux, rejection and contact angle were 3,300 L m–2 h–1, 60% and 67°, respectively. The membrane was adopted to treat esterification wastewater (pre-processed) by MBR, which had the best performance with 1 wt.% PEG-2000 concentration added and 19 wt.% polymer concentration (PVDF:PPSU was 5:5), steady treatment efficiency was obtained that the CODcr removal rate was more than 75% and the highest CODcr removal rate was 84.3%.
- Subjects
POLYVINYLIDENE fluoride; CONTACT angle; ESTERIFICATION; SEWAGE; POLYMERS
- Publication
Desalination & Water Treatment, 2017, Vol 61, p136
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2017.0130