Pilot Study on Adjustable Head Fall Mixer with Grids for Rapid Mixing  

作　　者：W.B. Bao S. Zhang Y.X. Zhang J.M. Wang 

机构地区：[1]College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China [2]Shanghai Municipal Engineering Design Institute, Shanghai 200092, China

出　　处：《Journal of Environmental Science and Engineering》2011年第7期812-815,共4页环境科学与工程（英文版）

摘　　要：The performance of adjustable head fall mixer is studied in a pilot experiment. Experimental results indicate that the dispersal efficiency increases with the space between grids and mixing pipe, which could be up to 96%. When the flow rate increases more than 31%, the dispersal efficiency decreases a little but still above 96%. It is demonstrated that special coagulant injection head makes significant Contribution to improving the mixer efficiency. The almost same turbidity of sedimentation effluent could be achieved with less coagulant, thus 30% chemical can be saved. Dissolved oxygen increases 2.5 mg/L in the mixing unit, which will benefit the following processes.

关 键 词：MIXER dispersal efficiency dissolved oxygen MICRO-MIXING drinking water treatment. 

分 类 号：X794.031[环境科学与工程—环境工程] TM727[电气工程—电力系统及自动化]