四步法清洗深度污染陶瓷微滤膜实验研究  

Experimental Study on the 4-step Chemical Cleaning of the Severely Fouled Ceramic Microfiltration Membrane

作　　者：刘光民[1] 吴恬[1] 姚吉伦[1] 吴限[1] 

机构地区：[1]后勤工程学院营房管理与环境工程系

出　　处：《后勤工程学院学报》2011年第2期63-68,共6页Journal of Logistical Engineering University

摘　　要：对深度污染0．2μmAl2O3陶瓷微滤膜表面和截面进行高分辨扫描电镜观测，在初步实验基础上提出一种有效的污染膜组合清洗方案：第1步，纯水漂洗；第2步，用氢氧化钠与次氯酸钠混合溶液（质量分数为1％）正向循环清洗；第3步，用柠檬酸溶液（质量分数为1％）正向循环清洗；第4步，用二氧化氯溶液（质量分数为0．12％）正向循环清洗。实验结果表明，四步法清洗效果显著，膜通量可恢复到较理想的水平。The characteristic of the surface and section of the severely fouled 00.2μ,m Al2O3 ceramic microfihration membrane is analyzed by SEM. By a series of pilot cleaning experiments, a kind of efficient combined cleaning plan with four steps is presented. For step l, it is to rinse the fouled membrane by purified water. Step 2 is to clean the fouled membrane with direct circulation by the mixed solution （ weight fraction 1% ） of NaOH and NaClO The third step with citric acid （ weight fraction 1% ） and the fourth step with chlorine dioxide solution（ weight fraction 0.12% ） are applied in a similar way with step 2. The results indicate that the cleaning effect is obvious, and the 4-step cleaning procedure can almost recover original membrane flux.

关 键 词：深度污染 陶瓷微滤膜 扫描电镜 化学清洗 

分 类 号：TQ016[化学工程]