厌氧正渗透MBR处理市政废水的效果及盐积累特性  

Effect of Anaerobic Forward Osmosis MBR on Municipal Wastewater Treatment and Salt Accumulation Characteristics

作　　者：杨恒[1] 朱雷[1] 朱先征 黄霞[2,3] 赵士奇 YANG Heng;ZHU Lei;ZHU Xianzheng;HUANG Xia;ZHAO Shiqi(College of Urban Construction of Wuhan University of Science and Technology,Wuhan 430065,China;School of Environment,Tsinghua University,Beijing 100084,China;State Key Joint Laboratory for Environmental Simulation and Pollution Control,Beijing 100084,China)

机构地区：[1]武汉科技大学城市建设学院,湖北武汉430065 [2]清华大学环境学院,北京100084 [3]环境模拟与污染控制国家重点联合实验室,北京100084

出　　处：《水处理技术》2021年第7期113-117,共5页Technology of Water Treatment

基　　金：北京市自然科学青年基金资助项目(8184077)。

摘　　要：针对污水低能耗处理与资源化技术需求,搭建了有效容积为2.2 L的浸没式厌氧正渗透膜生物反应器(AnOMBR),在35℃条件下进行了为期8天的实验,考察AnOMBR对市政废水的处理效果以及盐积累的特性。结果表明,由于膜污染和反应器中盐度的积累现象,水通量快速降低,在第6天FO膜通量由9.3 LMH降到2.14 LMH。在污染物去除方面,AnOMBR具有90%以上的TOC去除率,接近100%的TP去除率以及63.33%以上的氮去除率。由于混合液中的盐积累导致SMP和LB-EPS出现增长,但TB-EPS和电导率之间没有明显关联性。实验结束时,观察到厌氧污泥粒径变小,这可能会引起严重的膜污染。Wastewater treatment and recycling technology is the future development needs. An immersive anaerobic forward osmosis membrane bioreactor(AnOMBR) with an effective volume of 2.2 L was set up. An experiment was performed at 35 ℃ for 8 days to investigate the low-intensity AnOMBR for low-strength wastewater treatment. As the experiment progressed, the water flux decreased due to membrane fouling and increased salinity in the reactor, and the FO membrane flux decreased from 9.3 LMH to 2.14 LMH on the 6 th day. AnOMBR was found to have a TOC removal rate of more than 90%, a TP removal rate close to 100%, and a nitrogen removal rate of more than 63.33%.SMP and LB-EPS increased due to salt reverse diffusion, but no significant correlation was found between TB-EPS and electrical conductivity. At the end of the experiment, it was observed that the particle size of the anaerobic sludge became smaller, which may cause serious membrane fouling.

关 键 词：厌氧正渗透膜生物反应器 膜通量 盐积累 盐反渗 污染物去除 

分 类 号：TQ028.8[化学工程]