油水乳液污染纳米TiO2改性Al2O3陶瓷膜的化学清洗
作者:章婧12,张小珍1,周健儿1,韩润林1,汪永清1,常启兵1,江瑜华1
单位: 1. 景德镇陶瓷学院材料科学与工程学院,江西省高校无机膜重点实验室,景德镇,333001;2. 南昌理工学院新能源科学与工程学院,南昌,330013
关键词: 改性陶瓷微滤膜;纳米氧化钛;油水乳化液;膜污染;碱性复合清洗剂
DOI号:
分类号: TQ174.75
出版年,卷(期):页码: 2014,34(5):53-57

摘要:
研究了采用碱性复合清洗剂通过一次清洗工艺对油水乳化液污染的纳米TiO2改性Al2O3陶瓷微滤膜进行化学清洗的可行性。通过通量恢复率、油截留率、SEM和FT-IR等分析手段表征了制备的复合清洗剂对改性陶瓷膜的清洗效果及化学清洗对纳米TiO2改性效果的影响。结果表明,采用制备的复合清洗剂对油水乳化液污染的改性陶瓷膜进行清洗后,可有效去除膜污染物,表现出良好的清洗效果,且清洗过程不会明显影响纳米TiO2对Al2O3陶瓷膜的改性效果。工业应用试验表明,冷轧乳化液含油废水污染的改性陶瓷膜,经碱性复合清洗剂清洗后,膜纯水通量恢复率和油水渗透通量恢复率分别可达到96.9%和98.1%。
The feasibility for the chemical cleaning of nano TiO2 modified Al2O3 ceramic MF membranes fouled by oil/water emulsion was investigated in details, using the developed alkaline composite cleaning agent and through once cleaning process. The measurements of recovery ratios of permeate flux, oil rejection rate, scanning electron microscope (SEM) and fourier transform infrared spectroscopy (FTIR) analyses were conducted to characterize the cleaning effect of developed cleaning agents and the influence of chemical cleaning process on the modification effects of nano TiO2. Results shows that the prepared alkaline composite cleaning agent exhibit excellent cleaning effect and could remove the membrane foulants effectively. The chemical cleaning process does not affect the modification effects of nano TiO2 on Al2O3 ceramic membrane. The industrial application cleaning tests were also conducted for modified Al2O3 membranes fouled by cold rolling emulsified oily wastewater from a steel mill. After cleaning, the permeate flux recovery ratios of pure water and oily water could reach 96.9% and 98.1%, respectively.

基金项目:
国家国际科技合作专项(2009DFB50490);江西省自然科学基金(2010GZC0101 )

作者简介:
章婧(1989-),女,硕士研究生,主要从事陶瓷膜的应用研究,E-mail:i.am.simple@qq.com。*通讯作者,E-mail:zhangxz05@126.com

参考文献:
[1] Mohsen Abbasi, Mojtaba Mirfendereski, Mahdi Nikbakht, et al. Performance study of mullite and mullite-alumina ceramic MF membranes for oily wastewaters treatment [J]. Desalination, 2010, 259(1-3): 169-178.
[2] Changhong Su, Youqian Xu, Wei Zhang,et al. Porous ceramic membrane with superhydrophobic and superoleophilic surface for reclaiming oil from oily water [J], Applied Surface Science, 2012, 258( 7): 2319-2323.
[3] 周健儿,胡学兵,汪永清,等.工艺参数对TiO2改性α-Al2O3微滤膜油水分离效率的影响[J].人工晶体学报,2010,39(1):242-245.
[4] 常启兵,王 霞,汪永清,等. 纳米涂层修饰陶瓷膜的水渗透机理研究[J].中国陶瓷,2013, 49(8): 17-21.
[5] 钟林燕. 纳米涂层修饰陶瓷微滤膜的O/W乳化液分离工艺研究[D].景德镇:景德镇陶瓷学院,2012.
[6] 王长进,储凌,金江.陶瓷膜处理含油废水的膜化学清洗研究[J].水处理技术, 2010, 36(11): 52-54.
[7] 袁群杰,李必文,阎安.陶瓷膜处理油田采出水时的膜污染清洗研究[J].石油机械, 2003, 31(7): 1-5.
[8] 衣丽霞,董景岗.陶瓷膜分离技术在含油废水处理中的应用研究[J].盐业与化工, 2013, 42(2): 18-21.

服务与反馈:
文章下载】【加入收藏

《膜科学与技术》编辑部 地址:北京市朝阳区北三环东路19号蓝星大厦 邮政编码:100029 电话:010-64426130/64433466 传真:010-80485372邮箱:mkxyjs@163.com

京公网安备11011302000819号