利用油田废水电渗析脱盐液发酵制备鼠李糖脂的研究-高校化学工程学报.PDF

19 5 No.5 Vol.19 2005 10 Journal of Chemical Engineering of Chinese Universities Oct. 2005 1003-9015(2005)05-0664-06 1 2 2 1 , , , (1. , 310014; 2. , 310027) 500 5 0.2 g⋅L− 1 TQ 028.74 TQ 920.6 TE992.2 A Oily Wastewater Desalted by Electrodialysis for Rhamnolipids Production with Pseudomonas Aeruginosa 1 2 2 1 ZHANG Guo-liang , MENG Qin , TANG Xiao , ZUO Wen-rui (1. College of Biologiacal and Enviromental Engineering, Zhejiang University of Technology, Hangzhou 310014, China; 2. Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China) Abstract: An electrodialyzer with two-path spacer configuration was used to separate oily wastewater with high salinity for recycling utilization. The effects of concentration difference between the electrodialytic cells, concentration ratio of concentrate to product and oil adsorption of the membrane surface on desalination process including relative membrane fouling abatement were studied in detail. Then, the effective ways to improve current efficiency of electrodialysis and cost estimates compared with other wastewater treating process were further investigated. Finally, the desalted oily wastewater with different conductivity between 540 to 17500 S⋅cm−1 was used to produce rhamnolipids by Pseudomonas aeruginosa . After five days cultivation in 500mL shaking flasks, it was found that the yield of rhamnolipid production in broth of desalted oily wastewater with conductivity below 5000 µS·cm-1 could reach 0