正向渗透膜生物反应器运行参数优化研究  

OPTIMIZATION OF OPERATING PARAMETERS IN FORWARD OSMOSIS MEMBRANE BIOREACTOR

作　　者：廖文超[1,2] 李元高[1,2] 严滨[1,2] 徐苏[1,2] 张林斌[1] 宋一 

机构地区：[1]厦门理工学院环境科学与工程学院,福建厦门361024 [2]厦门市膜技术研发与应用重点实验室,福建厦门361024 [3]大连市食品药品检验所,辽宁大连116021

出　　处：《水处理技术》2013年第12期24-27,32,共5页Technology of Water Treatment

基　　金：福建省自然科学基金项目(2011J05141;2012J01236);福建省教育厅科技项目(JK2013033);厦门市科技计划项目(3502Z20123045)

摘　　要：采用正向渗透膜生物反应器处理模拟生活污水,考察汲取液种类和浓度、原液和汲取液膜面流速、活性污泥质量浓度对正向渗透膜通量的影响,并对工艺运行稳定性进行了研究。结果表明,离子数较多的硫酸钠溶液更适合作为汲取液,且膜通量随着汲取液浓度增加而增加。原液膜面流速对膜通量影响较小,汲取液膜面流速增大明显促进膜通量增加。在试验优化的工艺条件下,反应器能够长时间稳定运行,且能保持较高的膜通量和污染物去除效率。A forward osmosis membrane bioreactor was applied to treat simulated domestic wastewater. The effect of component and concentration of the draw solution, the crossflow velocities of feed solution and draw solution, and the MLSS on the water flux of the forward osmosis membrane was investigated, while the stability of the process was also studied. Results showed that the Na2SO4 solution which owns more ions was more suitable to be used as the draw solution, and the water flux increased with the increase of draw solution concentration. Moreover, the crossflow velocity of feed solution had relatively small influences on the water flux, but the increase of the crossflow velocity of draw solution could obviously promote the water flux. Under the optimized operating condition in this study, higher water flux and contaminant removal efficiency could be steadily gained in the forward osmosis membrane bioreactor.

关 键 词：正向渗透 膜生物反应器 汲取液 膜面流速 活性污泥质量浓度 

分 类 号：X703[环境科学与工程—环境工程]