School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, China; School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
Bioresour Technol. 2014 Sep;167:137-43. doi: 10.1016/j.biortech.2014.06.033. Epub 2014 Jun 16.
In this study, two aerobic forward osmosis (FO) membrane bioreactors (MBR) were utilized to treat the effluent of mesophilic (35°C) and atmospheric (25°C) anaerobic MBRs, respectively. The results showed that the FO membrane process could significantly improve the removal efficiencies of N and P. Meanwhile, the flux decline of the FOMBR treating effluent of mesophilic AnMBR (M-FOMBR) was higher than that treating effluent of atmospheric AnMBR (P-FOMBR). The organic membrane foulants in the two FOMBRs were analyzed to understand the membrane fouling behavior in FO processes. It was found that the slightly increased accumulation of protein-like substances into external foulants did not cause faster flux decline in P-FOMBR than that in M-FOMBR. However, the quantity of organic matter tended to deposit or adsorb into FO membrane pores in P-FOMBR was less than that in M-FOMBR, which was accordance with the tendency of membrane fouling indicated by flux decline.
在这项研究中，使用了两个好氧正向渗透（FO）膜生物反应器（MBR），分别用于处理中温（35°C）和常温（25°C）厌氧 MBR 的出水。结果表明，FO 膜过程可以显著提高 N 和 P 的去除效率。同时，处理中温厌氧 MBR 出水的 FO-MBR（M-FOMBR）的通量下降高于处理常温厌氧 MBR 出水的 FO-MBR（P-FOMBR）。对两种 FO-MBR 中的有机膜污染物进行了分析，以了解 FO 过程中的膜污染行为。结果发现，略有增加的蛋白质样物质在外部污染物中的积累并没有导致 P-FOMBR 的通量下降速度快于 M-FOMBR。然而，有机物质倾向于在 P-FOMBR 中沉积或吸附到 FO 膜孔中的数量少于 M-FOMBR，这与通量下降所表明的膜污染趋势一致。
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