[1]刘玄宁,王旭东,杜书雅,等.HRT对MF-OMBR工艺处理特性的影响[J].中国给水排水,2023,39(19):75-82.
　LIUXuan-ning,WANGXu-dong,DUShu-ya,et al.Effect of HRT on Treatment Characteristics of MF-OMBR Process[J].China Water & Wastewater,2023,39(19):75-82.
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HRT对MF-OMBR工艺处理特性的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第19期 页码: 75-82 栏目: 出版日期: 2023-10-01
Title:
Effect of HRT on Treatment Characteristics of MF-OMBR Process
作者:
刘玄宁1,2， 王旭东1,2， 杜书雅1,2， 王磊1,2， 张龙3， 高峰4
（1.西安建筑科技大学 环境与市政工程学院，陕西 西安 710055；2.陕西省膜分离重点实验室，陕西 西安 710055；3.西安建筑科技大学 网络与信息化管理处，陕西 西安 710055；4.中国建筑设计研究院有限公司，北京 100044）
Author(s):
LIU　Xuan-ning1，2， WANG　Xu-dong1，2， DU　Shu-ya1，2， WANG　Lei1，2， ZHANG　Long3， GAO　Feng4
（1. School of Environmental and Municipal Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. Shaanxi Key Laboratory of Membrane Separation Technology， Xi’an 710055，China； 3. Network and Information Management Division， Xi’an University of Architecture and Technology， Xi’an 710055， China； 4. China Architecture Design & Research Group， Beijing 100044， China）
关键词:
正渗透膜生物反应器;  微滤;  水力停留时间;  盐分积累;  膜污染
Keywords:
forward osmotic membrane bioreactor;  microfiltration;  HRT;  salt accumulation;  membrane fouling
摘要:
为探索水力停留时间（HRT）对联合微滤-正渗透膜生物反应器（MF-OMBR）运行性能及膜污染的影响，构建了分置式MF-OMBR装置处理生活污水，考察了HRT分别为5、8和12 h时装置连续运行14 d的效果。结果表明，当反应器HRT从5 h增加到12 h时，盐分积累愈加严重，但整体电导率均小于2.5 mS/cm，处于低盐水平；当HRT分别为5、8和12 h时，正渗透（FO）膜初始通量相差不大，但14 d后通量分别下降了54.8%、49.8%和67.3%。不同HRT条件下，MF-OMBR系统对生活污水的处理效果良好，MF和FO系统对TOC和氨氮的去除率分别达到93.0%和95.6%以上，FO系统对TN和TP的去除率可以达到77.0%和98.7%以上。当HRT为8 h时，MF-OMBR系统的综合效益最佳。不同HRT条件下，FO膜表面有机物均为蛋白质和多糖。当HRT为8 h时，由于FO膜表面污染物负载率降低和溶解性胞外聚合物（SMP）的减少，实现了对膜污染的有效控制。
Abstract:
A separate microfiltration and forward osmotic membrane bioreactor (MF-OMBR) system was constructed for the treatment of domestic sewage, and its performance of continuous operation for 14 days was investigated when the hydraulic retention time （HRT） was 5 h, 8 h and 12 h, respectively, so as to reveal the effect of HRT on the operational performance and membrane fouling of the combined process. When the HRT of the reactor was increased from 5 h to 12 h, more serious salt accumulation was observed. However, the overall conductivity was less than 2.5 mS/cm, indicating that the salinity was low. When the HRT was 5 h, 8 h and 12 h, respectively, there was no significant difference among the initial fluxes of forward osmosis (FO) membrane, whereas the flux decreased by 54.8%, 49.8% and 67.3% respectively after 14 days. Under different HRT conditions, the MF-OMBR system had a good performance for the treatment of domestic sewage. The MF and FO system demonstrated removal rates of more than 93.0% for TOC and more than 95.6% for ammonia nitrogen, and the FO system along had the removal rates of more than 77.0% for TN and more than 98.7% for TP. The comprehensive benefit of MF-OMBR system was the best when the HRT was 8 h. Under different HRT conditions, the organic compounds on the surface of the FO membrane were protein and polysaccharide. When the HRT was 8 h, the effective control of membrane fouling was realized due to the reduction of contaminant loading rate and soluble microbial products (SMP) on the surface of the FO membrane.

相似文献/References:

[1]刘彩虹,刘乾亮,宋丹,等.甜菜碱接枝复合膜在FOMBR中的膜污染研究[J].中国给水排水,2022,38(3):35.
　LIUCai-hong,LIUQian-liang,SONGDan,et al.Fouling Behavior of Betaine-grafted Thin?film Composite Membrane in Forward Osmosis Membrane Bioreactor[J].China Water & Wastewater,2022,38(19):35.

更新日期/Last Update: 2023-10-01