恒压运行时混凝动态膜的形成及对污染物的去除

›› 2009, Vol. 9 ›› Issue (1): 33-37.

恒压运行时混凝动态膜的形成及对污染物的去除

许春华高宝玉曹百川岳钦艳卢磊程丹丹

山东大学环境科学与工程学院山东大学环境科学与工程学院山东大学环境科学与工程学院山东大学环境学院山东大学环境科学与工程学院山东大学环境科学与工程学院

收稿日期:2008-09-04 修回日期:2008-12-08 出版日期:2009-02-20 发布日期:2009-02-20
通讯作者: 许春华

Formation of Coagulation Dynamic Membrane and Pollutants Removal at Constant Pressure

XU Chun-hua GAO Bao-yu CAO Bai-chuan YUE Qin-yan LU Lei CHENG Dan-dan

School of Environmental Science and Engineering, Shandong University School of Environmental Science and Engineering, Shandong University School of Environmental Science and Engineering, Shandong University School of Environmental Science and Engineering, Shandong University School of Environmental Science and Engineering, Shandong University

Received:2008-09-04 Revised:2008-12-08 Online:2009-02-20 Published:2009-02-20
Contact: XU Chun-hua

摘要/Abstract

摘要： 研究了污染河水混凝絮体形成动态膜的过程及其对污染物的去除效果，以无纺布为附着基材，受污染河水为研究对象，聚合氯化铝为混凝剂，通量稳定作为动态膜形成的依据，通过运行时间(t)、累计出水体积(V)及t/V、通量之间的关系研究动态膜的成膜过程及对污染物的去除效果. 结果表明，4和8 cm水头运行时动态膜形成时间分别为120和70 min，成膜后通量基本一致. 动态膜的形成首先是小于或等于基材孔径的颗粒被截留，然后为小于基材孔径的颗粒在膜内部通道堵塞或沉积. 污染物去除效果COD去除率约为75%~71%，总磷去除率约为81%，出水粒度分布表明动态膜对颗粒物有较好的截留作用.

关键词: 混凝, 动态膜, 污染河水, 形成过程, 无纺布, 污染物去除

Abstract: Based on the relationship of operation time (t), accumulative effluent volume (V), t/V, and flux rate, the dynamic membrane formation and pollutants removal were investigated. In this reactor, contaminated river water was treated when non-woven fabric material was used as support medium and polyaluminum chloride selected as an effective coagulant. The results showed that the dynamic membrane formation time was 120 min at 4 cm water head drop, and 70 min at 8 cm one, the stabilized flux was similar. In the formation of dynamic membrane, the support medium was firstly covered with bigger particles than its aperture, then the jam and sedimentation of smaller particles in the cores. The pollutant removal showed that COD removal rate was 75%~71%, and the total P about 81%, the dynamic membrane had better particle removal capability.

Key words: coagulation, dynamic membrane, contaminated river water, formation process, non-woven fabric, pollutant removal

中图分类号:

X703

许春华高宝玉曹百川岳钦艳卢磊程丹丹. 恒压运行时混凝动态膜的形成及对污染物的去除[J]. , 2009, 9(1): 33-37.

XU Chun-hua GAO Bao-yu CAO Bai-chuan YUE Qin-yan LU Lei CHENG Dan-dan. Formation of Coagulation Dynamic Membrane and Pollutants Removal at Constant Pressure[J]. , 2009, 9(1): 33-37.

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