Study of a membrane bioreactor with glass fiber flat grille modules and the modules' optimization based on the local critical flux theory

WATER RESEARCH

卷:44

Article

Yuan, Dongdong¹  Fan, Yaobo¹  Yu, Yan¹  Xu, Guoliang¹  Yang, Wenjing¹  Wu, Guangxia¹ 

[1] Chinese Acad Sci, Dept Water Pollut Control Technol, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China

关键词: Inorganic glass fiber;    MBR;    Module configuration;    Surface modification;    Local critical flux;    Critical time;   

DOI  :  10.1016/j.watres.2009.10.015

来源: Elsevier

【 摘 要 】

A novel flat grille membrane module using inorganic glass fibers as filter media is proposed for use in a membrane bioreactor for wastewater treatment. A model which integrates the concepts of back transport velocity, spatial local critical flux and temporal variation of the local flux has been developed. The membrane module was optimized based on experimental results and calculations using the model. The optimized parameters include the volume ratio of membrane solution for the surface modification of glass fibers, the fiber inner diameter and fiber length. The optimal values were 1:2 and 5 mm respectively but the length had little effect on the performance of the module. The critical time was then calculated with the model and an equation developed. The result was in very good agreement with the observed one. Finally, the performance of the glass fiber MBR was monitored. The effluent quality and stability of the system were comparable to that of conventional MBRs. This MBR will be a promising technique for wastewater treatment given its low cost, high strength and good effluent quality. (c) 2009 Elsevier Ltd. All rights reserved.

【 授权许可】

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