Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7065876 | Bioresource Technology | 2018 | 8 Pages |
Abstract
PTFE hollow fiber anaerobic membrane bio-reactor (AnMBR) performance was investigated in the treatment of organic wastewater, with varying salinity and PTFE membrane cleaning behavior. The AnMBR was operated for 226â¯days, with a total and biological COD removal efficiency of 97.2% and 89.9% respectively, at a NaCl concentration of 35â¯gâ¯Lâ1. A high number of Proteobacteria (38.2%) and Bacteroidetes (25.9%) were present in the system, with an increase in membrane fouling rate from 1.88â¯Ãâ¯1011 to 2.63â¯Ãâ¯1011â¯mâ1â¯dâ1 with higher salinity. The effects of soluble microbial products (SMP), extracellular polymeric substances (EPS), low molecular-weight (LMW) carbohydrates, sludge particle size and inorganic element accumulation, were evaluated on membrane fouling. Flux recovery of fouled PTFE membranes reached 91.6% with offline cleaning. Overall, results indicate that PTFE hollow fiber AnMBR provides a promising method for the treatment of saline organic wastewater.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Jing Li, Changwang Jiang, Wansheng Shi, Feiyue Song, Di He, Hengfeng Miao, Tao wang, Jingxuan Deng, Wenquan Ruan,