水解酸化—膜生物反应器处理印染废水  

Treatment of Dyeing Wastewater by Hydrolytic Acidification-MBR Process

作　　者：周媛[1] 奚旦立[2] 

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]东华大学环境科学与工程学院,上海201620

出　　处：《化工环保》2010年第4期314-318,共5页Environmental Protection of Chemical Industry

基　　金：上海高校选拔培养优秀青年教师科研专项基金资助项目(NO.egd08007)

摘　　要：采用平行比较实验,研究了加入聚合硫酸铝铁(PAFS)的水解酸化—膜生物反应器(MBR)工艺(1号系统)和未加PAFS的水解酸化—MBR工艺(2号系统)对模拟印染废水(简称废水)的处理效果和膜污染状况。实验结果表明,PAFS所形成的含铁含铝活性污泥可以提高废水的COD去除率和脱色率。运行期间1号系统膜污染引起的系统抽吸压力增长速率远小于2号系统。污染膜表面的电子显微镜照片表明加入PAFS后减缓了MBR中活性污泥在膜表面的沉积。1号系统膜组件的污染主要是Fe3+、Al3+及它们的氢氧化物为主的无机物在膜表面和膜孔内沉积所形成;2号系统的膜污染以微生物及其有机代谢产物所形成的污泥层附着为主。In parallel comparison experiments on the treatment of simulated dyeing wastewater by the hydrolytic acidification-MBR process with polymeric aluminum ferric sulphate(PAFS) addition(system 1) and the hydrolytic acidification-MBR process without PAFS addition(system 2),the treatment effects and membrane fouling rate were investigated.The experimental results show that PAFS can form into aluminum-iron-containing activated sludge and increase the removal rates of COD and chroma;the pressure increasing caused by membrane fouling in system 1 is far slower than that in system 2.The electronic microscope photograph of the fouled membrane surface shows that the added PAFS can reduce the activated sludge deposit on MBR membrane surface.The fouling agents in system 1 are mainly Fe3+,Al3+ and their hydroxide deposited on membrane surface and pores;However,The fouling agents in system 2 are mainly microorganisms and their organic metabolites attached on membrane surface.

关 键 词：聚合硫酸铝铁 膜生物反应器 水解酸化 脱色 印染废水 

分 类 号：X791[环境科学与工程—环境工程]