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
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.
2009, Vol. 9 
