纳米三氧化二铝与无机絮凝剂复配的絮凝实验  

Nano-Al_2O_3 Compounded with Inorganic Flocculants in Flocculation Experiment

作　　者：蔡靖[1] 卢勃如 王泽甲[1] CAI Jing;LU Bo-ru;WANG Ze-jia(School of Chemical and Materials Engineering, Yanching Institute of Technology, Langfang 065201, China)

机构地区：[1]燕京理工学院化工与材料工程学院,河北廊坊065201

出　　处：《化工技术与开发》2016年第8期48-51,62,共5页Technology & Development of Chemical Industry

基　　金：河北省廊坊市科学技术研究与发展计划自筹经费项目(2015-2016)(2015011054)

摘　　要：为了提高单一无机絮凝剂的污水处理效果,将纳米三氧化二铝(nano-Al2O3)与聚合氯化铝(PAC)、三氯化铁(Fe Cl3)进行了复配絮凝实验,并对复配絮凝剂处理城市生活污水的絮凝性能进行了研究。结果表明,复配絮凝剂的COD去除率为88.3%,比PAC、Fe Cl3单独处理时分别提高了51.7%、64.7%,脱色率为88.5%,比PAC提高了65.4%,沉降时间比PAC减少了74.1%,污泥体积比PAC、Fe Cl3分别减少了30.2%、38.0%,出水p H值为6.8,处理优势较明显;但也存在氨氮去除率低等不足,需要进一步研究改善。Nano-Al2O3, PAC and FeCl3 were used together in the flocculation experiment in order to improve the water treatment efficiency of inorganic flocculants. As well as, the compound flocculation performance of the treating domestic sewage was studied.As a result, the compound flocculation could make the removal rate of COD reach 88.3%, which was increased by 51.4% and 64.7%respectively compared to PAC and FeCl3. Meanwhile, The decolorization rate of the compound flocculation was 88.5%, which was increased by 65.4% than PAC. The sedimentation time of the compound flocculation was reduced by 74.1% than PAC. At the same time, the slurry volume was reduced by 30.2% and 38.0% respectively compared to PAC and FeCl3. The pH value of effluent was 6.8.However, It had low removal rate of ammonia nitrogen, so it was necessary to improve it by research in the future.

关 键 词：纳米三氧化二铝 复配 聚合氯化铝 三氯化铁 絮凝 

分 类 号：X703[环境科学与工程—环境工程]