IEF缓解正渗透膜生物反应器中盐积累的研究
Research on IEF for alleviating salt accumulation in forward osmosis membrane bioreactors
何珍东 1宋虹苇 1尹蝶1
作者信息
- 1. 内蒙古工业大学土木工程学院,内蒙古 呼和浩特 010051
- 折叠
摘要
为了缓解正渗透膜生物反应器(OMBR)中盐积累的问题,加入离子交换纤维(IEF)作为吸附剂,开发构建IEF-OMBR系统缓解生物反应器中的盐积累,对水通量、水质、活性污泥特性及膜污染进行研究.结果表明,IEF用量为10 g/L时,运行20 d,IEF-OMBR系统的电导率上升到7.13 mS/cm,传统OMBR系统的电导率上升到13.48 mS/cm,两者电导率的增速相差53%;传统OMBR系统的水通量为2.91 L/(m2·h),IEF-OMBR系统的水通量为6.01 L/(m2·h),加入IEF后水通量提高106.5%;与传统OMBR系统相比,IEF-OMBR系统对正渗透膜的污染明显减少,出水水质也有一定的提高.
Abstract
In order to alleviate the salt accumulation in forward osmotic membrane bioreactor(OMBR),the IEF-OMBR system was developed and constructed by adding ion exchange fiber(IEF)as adsorbent to alleviate the salt accumulation in the bioreactor,and the water flux,water quality,activated sludge characteristics,and membrane pollution were studied.The results indicate that when the IEF dosage was 10 g/L and the system operated for 20 days,the conductivity of the IEF-OMBR system rose to 7.13 mS/cm,while the conductivity of the conventional OMBR system increased to 13.48 mS/cm,with a 53%difference in the rate of conductivity increase between the two.The water flux of the conventional OMBR system was 2.91 L/(m2·h),and the water flux of the IEF-OMBR system was 6.01 L/(m2·h),106.5%increase in water flux with IEF.Compared to the conventional OMBR system,the IEF-OMBR system exhibited a significant reduction in fouling of the forward osmosis membrane and a certain improvement in effluent water quality.
关键词
正渗透膜生物反应器/离子交换纤维/盐积累/膜污染/水通量Key words
osmotic membrane bioreactor/ion exchange fibers/salt accumulation/membrane fouling/water flux引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据