预涂PAC动态膜生物反应器长期运行特性研究  

The Long-term Operational Performance of a PAC-precoated Dynamic Membrane Coupled with a Bioreactor for Domestic Wastewater Treatment

作　　者：魏奇锋[1] 刘东海[1] 张威 叶茂盛[1] 崔霞[1] 

机构地区：[1]大连理工大学环境与生命学院,辽宁大连116024 [2]大连市教育局基建办公室,辽宁大连116021

出　　处：《辽宁化工》2007年第2期96-99,共4页Liaoning Chemical Industry

摘　　要：利用普通工业滤布和粉末活性炭(PAC)形成预涂动态膜(PDM),然后置入活性污泥池中形成预涂动态膜生物反应器(PDMBR)。通过两个周期共计153 d的试验表明,PDMBR长期运行稳定性良好。试验过程中膜通量为13.7 L.m-2.h-1,HRT为10 h,平均COD去除率为90.70%,平均NH+4-N去除率为96.15%。SEM分析知,造成膜污染的最主要的因素是PDM膜面的生物凝胶层,其次是压实的PDM膜层,而膜基质(滤布)由于受到外层PDM和生物凝胶层的双重保护而几乎没有受到污染,阻力变化不大,因而膜清洗容易。The membrane module was made up of coannon filter cloth and the precoating reagent was powder activated carbon （PAC）, and then the precoated dynamic membrane coupled with a bioreaetor was used for domestic wastewater treatment. The experiment ran for 153 days with the stable operational performance. In the case of the membrane flux was 13.7 L· m^-2. h^-1, HRT was 10 h, the COD re- moval efficiency was 90.70 %, NH4^＋ -N removal efficiency was 96.15 %. The SEM showed that the gel layer was the most factor of the membrane fouling while the impacted PDM ecke layer ,cculd be the second, and both of them protected the support membrane （ the filter cloth） from fouling, so the membrane flux could recover easily.

关 键 词：预涂动态膜 运行特性 粉末活性炭 膜生物反应器 膜污染 

分 类 号：X703.1[环境科学与工程—环境工程]