张芸

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:女

毕业院校:北京科技大学

学位:博士

所在单位:环境学院

学科:环境科学. 环境工程

办公地点:环境楼301

联系方式:通讯地址:大连市凌工路2号,大连理工大学 环境学院, 邮政编码:116024

电子邮箱:zhangyun@dlut.edu.cn

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Study on Recycling Alkali from the Wastewater of Textile Mercerization Process by Nanofiltration

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论文类型:会议论文

发表时间:2014-01-01

收录刊物:CPCI-S

卷号:9

页面范围:71-76

关键字:nanofiltration tchnology; nanofiltration membrane; pinting and dyeing mercerization process; Wastewater

摘要:This study has researched the treatment ability of nanofiltration technology in printing and dyeing mercerization process alkali wastewater and investigated the effect of different pressures and alkalinities on membrane flux. The effect of different operating conditions on COD removal rate and alkali penetration rate has been also investigated in this study. The experimental results show that nanofiltration technology can remove the COD in printing and dyeing mercerization process wastewater effectively and the removal rate is above 80%. We conclude that the membrane flux tends to increase as the operating pressure increases, and decrease as the concentration of alkali in feed liquor and COD increases. The infiltration liquor through membrane can be satisfactorily reused by the method of concentration, and the final recovery efficiency of alkali by nanofiltration membrane treatment is above 90%. (C) 2014 Published by Elsevier B. V.