优化纳米Al_2O_3与聚合氯化铝复配絮凝条件的正交试验  

Nano-Al_2O_3 and PAC Flocculation Optimized in Orthogonal Experiment

作　　者：蔡靖[1] 林聪[2] 

机构地区：[1]北京化工大学北方学院,河北廊坊065201 [2]中国农业大学水利与土木工程学院,北京100083

出　　处：《桂林理工大学学报》2010年第3期408-410,共3页Journal of Guilin University of Technology

摘　　要：选取纳米Al2O3与聚合氯化铝的质量百分组成、水浴温度、混合搅拌时间作为影响复配絮凝剂对COD去除效果的3个主要因子进行正交试验。正交优化试验结果表明最佳的复配条件为:将聚合氯化铝固体粉末与纳米Al2O3粉末(两者质量组成为85%+15%)用粉碎机充分混合后配置成质量浓度1%的液体复合絮凝剂,再将该液体复合絮凝剂在65℃的恒温水浴条件下,用电子恒速搅拌器以100 r/min的转速搅拌40 min。Nano-Al2O3 is complicated with PAC in the flocculation experiment.It indicates that the complicated flocculants do better than PAC in the removal of COD.Mass percent composition of nano-Al2O3 and PAC,the temperature of water bath,mixing time of them are used as the main factors which impact on the complicated flocculants in the removing of COD in the orthogonal experiment.The experiment shows that both PAC powder and nano-Al2O3 powder are made into 1% liquid compound flocculants when mixed with the crusher completely at the mass percent composition of 85% and 15%.Then compound flocculants above are added to the samples of sewage water after it is mixed with the electronic stirrer at the speed of 100 r/min for 40 min in the water bath at 65 ℃.These parameters mentioned are the best in the complex flocculation experiment.

关 键 词：聚合氯化铝 纳米AL2O3 正交试验 絮凝 COD去除率 

分 类 号：X703.5[环境科学与工程—环境工程]