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.
出处
《水处理技术》
CAS
CSCD
北大核心
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)
