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| 气-水联合反冲洗膜污染防治技术研究 | |
| 引用本文： | 王志强,蔡振宇,张志刚,杜韶光,李娟. 气-水联合反冲洗膜污染防治技术研究[J]. 环境工程学报, 2005, 6(8): 61-63 |
| 作者姓名： | 王志强 蔡振宇 张志刚 杜韶光 李娟 |
| 作者单位： | 1. 中国矿业大学(北京)资源与安全工程学院,北京,100083;河北工程学院城市建设系,邯郸,056038 2. 河北工程学院后勤服务总公司,邯郸,056038 3. 邯郸市环境保护局评估中心,邯郸,056002 4. 中国矿业大学(北京)资源与安全工程学院,北京,100083 |
| 摘 要： | 采用气水联合反冲洗技术,考察了气水比(Qg/Ql)、反冲洗周期及其对膜污染的防治效果。结果表明,气水联合反冲洗较单独气或水反冲洗效果好;在过滤周期20min,反冲洗时间1min,气水比1.5时,气水联合反冲洗能够恢复膜通量到膜清水通量的80%以上。此法可大幅度清除沉积在膜表面的泥饼层,恢复膜通量,维持膜过滤性能的稳定,是一种较为有效的膜污染防治技术。 |
| 关 键 词： | 膜生物反应器 膜污染 反冲洗 气 水比 |
| 文章编号： | 1008-9241(2005)08-0061-03 |
| 修稿时间： | 2004-05-31 |
Study on the combination backwashing of gas and permeate as membrane fouling prevention techniques |
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| Wang Zhiqiang,Cai Zhenyu,Zhang Zhigang,Du Shaoguang,Li Juan. Study on the combination backwashing of gas and permeate as membrane fouling prevention techniques[J]. Techniques and Equipment for Environmental Pollution Control, 2005, 6(8): 61-63 | |
| Authors: | Wang Zhiqiang Cai Zhenyu Zhang Zhigang Du Shaoguang Li Juan |
| Affiliation: | Wang Zhiqiang 1,2 Cai Zhenyu3 Zhang Zhigang4 Du Shaoguang4 Li Juan1 |
| Abstract: | The effect of the ratio of gas to permeate (Q_g/Q_l) and backwashing cycles to membrane fouling by the combination backwashing of gas and permeate were investigated.The experimental results showed that the combination of gas and permeate backwashing was superior to single permeate or gas back washing, respectively. The combination of gas and permeate backwashing could recover the membrane flux to 80% of tap water membrane flux at filtration cycle 20 min,backwashing time 1 min and Q_g/Q_l as 1.5. This technique could remove the cake layer deposited on the membrane surface, thus recover the membrane flux effectively, so it could be concluded that this technique was an effective technique for prevention of membrane fouling. |
| Keywords: | membrane bioreactor (MBR) membrane fouling backwashing ratio of gas to permeate (Q_g/Q_l) |
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