微网材质对动态膜形成的影响  

Effects of mesh material on dynamic membrane formation

作　　者：张澍[1] 周明远[1] 于鸿光[2] 吴志超[2] 朱学峰[1,2] 郎茂倩 

机构地区：[1]上海第二工业大学城市建设与环境工程学院,上海201209 [2]同济大学环境科学与工程学院,上海200092

出　　处：《环境工程学报》2015年第8期3768-3772,共5页Chinese Journal of Environmental Engineering

基　　金：上海第二工业大学校基金(EGD13XQD16);上海第二工业大学校学科培育基金(XXKPY1303)

摘　　要：分别采用2种相同孔径不同材质的膜材料(39μm尼龙,39μm涤纶)进行死端过滤与错流过滤实验,以考察微网材质对动态膜(DM)形成的影响。死端过滤实验结果表明,尼龙和涤纶微网均可获得超过99.7%的悬浮物(SS)截留率,而涤纶微网比尼龙微网更容易形成致密的动态膜;错流过滤实验结果表明,尼龙和涤纶微网最终出水浊度均小于20NTU,同时发现,涤纶网在动态膜形成过程中,压力上升较慢,但动态膜更致密,因此,出水效果更好。In order to investigate the effects of mesh material on dynamic membrane formation, the perform- ance of two kinds of meshes （39 μm-nylon and 39 μm-dacron） was studied in dead-end filtration and cross-flow filtration test. According to dead-end filtration test, it was found that more than 99.7% of the suspended solids （SS） were retained by two kinds of dynamic membrane （DM）. Compared with nylon mesh, dacron mesh could be conducive to form more thick and compact DM layer. However, cross-flow filtration test shows that the final effluent turbidity of both dacron mesh and nylon mesh DM was less than 20 NTU. Meanwhile, it was found that during the formation of DM layer, the transmembrane pressure increase rate of DM of dacron mesh is less than that of nylon mesh, while the formation of more compact DM layer by dacron mesh results in higher effluent qual-ity.

关 键 词：膜材料 动态膜 活性污泥 

分 类 号：X703.1[环境科学与工程—环境工程]