This study describes an approach for surface modification of a nonwoven membrane by diatomite/iron oxide to examine its filterability. Analysis results showed that nonwoven hydrophilicity is enhanced. Static contact angle decreases dramatically from 122.66° to 39.33°. Scanning electron micrograph images show that diatomite/iron oxide is attached on nonwoven fiber. X-ray diffraction analysis further proves that the compound is mostly magnetite. Fourier transformed infrared spectra results reveal that two new absorption peaks might be attributed to SiO and FeO, respectively. Modified and original membranes were used in double nonwoven membrane bioreactors (MBRs) for synthetic wastewater treatment. High critical flux, long filtration time, slow trans-membrane pressure rise and stable sludge volume index confirmed the advantages of modified nonwoven. Comparing with original nonwoven, similar effluent qualities are achieved, meeting the requirements for wastewater reclamation.
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Research Article|
June 05 2014
Performance of diatomite/iron oxide modified nonwoven membrane used in membrane bioreactor process for wastewater reclamation
Yueling He;
Yueling He
1College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
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Wenqi Zhang;
1College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
E-mail: zhangwenqi_hit@163.com
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Pinhua Rao;
Pinhua Rao
1College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
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Peng Jin
Peng Jin
2China Northeast Architectural Design and Research Institute, CORP. LTD, Shenyang 110006, China
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Water Sci Technol (2014) 70 (3): 533–539.
Article history
Received:
March 15 2014
Accepted:
May 19 2014
Citation
Yueling He, Wenqi Zhang, Pinhua Rao, Peng Jin; Performance of diatomite/iron oxide modified nonwoven membrane used in membrane bioreactor process for wastewater reclamation. Water Sci Technol 1 August 2014; 70 (3): 533–539. doi: https://doi.org/10.2166/wst.2014.254
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