膜材料对膜曝气生物膜反应器性能影响的比较

2016年4月 CIESC Journal

April 2016第67

卷 第4期 化 工 学 报 V ol.67 No.4

膜材料对膜曝气生物膜反应器性能影响的比较

曾庆楠1，吴云1,2，张宏伟1,2，张楠3

（1天津工业大学环境与化学工程学院，天津 300387；2天津工业大学省部共建分离膜与膜过程国家重点实验室，

天津 300387；3中海油天津化工研究设计院，国家工业水处理工程技术研究中心，天津 300131）

摘要：选择聚偏氟乙烯（PVDF ）和聚丙烯（PP ）中空纤维曝气膜作为膜曝气生物膜反应器（MABR ）的膜组件材料，比较两种膜材料由于亲疏水性能、表面形态、生物相容性等性质的差别，对MABR 挂膜启动速度、生物附着量、脱氮除碳及膜污染等性能的影响。研究显示，运行末期PVDF 和PP 膜纤维生物附着量分别为35.62 g ·m −2和30.63 g ·m −2。通过场发射扫描电子显微镜观察两种膜表面生物污染情况，PVDF 膜纤维表面呈鱼鳞状结构，有效保护了膜孔不被微生物完全堵塞。在90 d 的运行周期内以PVDF 为曝气膜材料的MABR 获得了90%以上的COD 去除率和78%的TN 去除率；而以PP 为曝气膜的MABR 由于运行后期曝气膜纤维污染严重仅得到了76.5%的COD 去除率和49.1%的TN 去除率。因此， PVDF 曝气纤维更适于作膜曝气生物膜反应器的曝气膜。 关键词：MABR ；PVDF ；PP ；生物膜；膜污染 DOI ：10.11949/j.issn.0438-1157.20151362

中图分类号：X 703.1 文献标志码：A 文章编号：0438—1157（2016）04—1483—07

Effects of membrane materials on performance of membrane aerated

biofilm reactor

ZENG Qingnan 1, WU Yun 1,2, ZHANG Hongwei 1,2, ZHANG Nan 3

(1School of Environmental and Chemical Engineering , Tianjin Polytechnic University , Tianjin 300387, China ;

2

State Key Laboratory of Separation Membranes & Membrane Processes , Tianjin Polytechnic University , Tianjin 300387, China ; 3CNOOC Tianjin Chemical Research & Design Institute , National Industrial Water Treatment Engineering

Technology Research Center , Tianjin 300131, China )

Abstract : Polyvinylidene fluoride (PVDF) and polypropylene (PP) were chosen as membrane materials to compare the effects of membrane materials on the start-up time, biomass, performance for nitrogen and carbon removals as well as membrane fouling in membrane aerated biofilm reactor (MABR), resulting from their different hydrophilic and hydrophobic properties, surface morphology and biocompatibility. The results showed that the biomass on PVDF and PP membrane fibers were 35.62 g ·m −2 and 30.63 g ·m −2, respectively. The membrane fouling by microorganism was observed by using scanning electron microscope (SEM). The surface of PVDF membrane fibers with scaly structure was found, which prevented the pores from being blocked by microorganism on the surface effectively. MABR equipped PVDF membrane fibers achieved COD removal efficiency of above 90% and TN removal efficiency of 78% during 90 days operation, while COD and TN removal efficiencies of MABR occupied with PP membrane fibers were kept 76.5% and 49.1%, respectively,

2015-08-31收到初稿，2015-11-16收到修改稿。

联系人：吴云。第一作者：曾庆楠（1990—），女，硕士研究生。基金项目：国家自然科学基金项目（51108316）；中国博士后科学基金项目（2015M571267）；天津市科技计划项目（14ZCDGSF00128）。

Received date : 2015-08-31.

Corresponding author : Prof. WU Yun, wuchloud@

Foundation item : supported by the National Natural Science Foundation of China (51108316), the Postdoctoral Science Foundation of China (2015M571267) and the Science and Technology Project of Tianjin (14ZCDGSF00128).