用超滤膜法浓缩剩余污泥中蛋白提取液的实验研究  

Concentration of protein extracted from residual activated sludge by membrane ultra filtration

作　　者：庞金钊[1] 张淑玲[2] 刘忠[1] 杨宗政[1] 邱瑾[2] 

机构地区：[1]天津科技大学海洋与科学工程学院,天津300222 [2]天津科技大学材料科学与化学工程学院,天津300222

出　　处：《天津工业大学学报》2009年第6期7-10,共4页Journal of Tiangong University

基　　金：国家科技支撑计划课题(2006BAD32B07)

摘　　要：采用超滤膜法浓缩剩余污泥中的蛋白提取液,并对浓缩过程中的膜污染展开分析,在此基础上,确定了污染膜适宜的清洗工艺.研究证明,采用超滤膜法浓缩剩余污泥中的蛋白质提取液是可行的.在室温条件下,操作压力为0.10～0.18MPa时,压力的升高有利于膜通量的增加,但也会增加膜污染的速率;浓缩过程中适当的清洗,不仅可以提高工作效率,还有利于膜通量的恢复;采用清水、碱性清洗剂(0.3%的NaOH和0.1%的NaClO混合液)、酸性清洗剂(0.1%的盐酸溶液),以动静态混合的方式清洗后,膜通量恢复率(WFR)可达到90%以上.The Concentration of protein extracted from residual activated sludge using uhrafihration membrane is investigated, and membrane fouling is analyzed and the appropriate membrane cleaning process is obtained. The experiment results indicate that it is feasible to concentrate protein extracted from residual activated sludge by ultrafiltration membrane. The permeate flux increased following the rising of operation pressure but resulted in more rapidly decrease of flux under pressure 0.10-0.18 MPa and at temperature 25 ~C; cleaning the membrane during the process of concentration not only increase the efficiency, but also is good for the recovery of membrane flux. The membrane flux recovery can be up to more than 90% after the cleaning procedures using water, alkaline cleaner （ 0.3% sodium hydroxide solution and 0.1 % sodium hypochlorite solution ） , acidic cleaner （0.1% hydrochloric acid ） with the way of the combination of static and dynamic.

关 键 词：剩余污泥 蛋白质 超滤膜 浓缩 

分 类 号：TS102.528.1[轻工技术与工程—纺织工程] X705[轻工技术与工程—纺织科学与工程]