MIEX/PAC工艺对景观回用再生水的深度净化效果  

MIEX /PAC Process for Advanced Purification of Landscape Reclaimed Water

作　　者：廖日红[1,2] 申颖洁[3] 马宁[1,2] 王真[4] 

机构地区：[1]中国矿业大学<北京>化学与环境工程学院,北京100083 [2]北京市水科学技术研究院流域水环境与生态技术北京市重点实验室,北京100048 [3]中国电子工程设计院,北京100840 [4]石家庄市环境保护局,河北石家庄050021

出　　处：《中国给水排水》2014年第1期38-42,共5页China Water & Wastewater

基　　金：北京市自然科学基金面上资助项目(8112016);北京市科委重大项目(Z121100000212017);科技创新基地培育与发展工程流域水环境与生态技术北京市重点实验室2012年度阶梯计划项目(Z121109009212050)

摘　　要：采用磁性离子交换树脂／混凝（MIEX／PAC）组合工艺对景观回用再生水进行深度净化，分别考察了MIEX和PAC的单独净化效果，以及PAC投量对MIEX／PAC组合工艺净化效果的影响。当单独投加MIEX为20mL／L时，对COD、UV254、TN、浊度和叶绿素a的去除率分别是51.39％、45.41％、62.26％、77.84％和72.25％，对荧光类有机物的去除率在58.28％～73.86％之间。当单独投加PAC混凝剂为120mg／L时，对COD、UV254、TN、浊度和叶绿素a的去除率分别是48.61％、38.62％、41.51％、88.42％和85.59％，而对荧光类有机物的去除率仅为14.13％～29.22％。经MIEX预处理后再进行混凝沉淀，对COD、UV254、TN、浊度和叶绿素a的去除率分别提高了9.72％、2.64％、1.89％、18.04％和26.72％，表明在该组合工艺中MIEx单元是去除溶解性有机物和TN的主要贡献者。The combined process of magnetic ion exchange resin （MIEX） and PAC was used for advanced purification of landscape reclaimed water. The effectiveness of both MIEX and PAC alone were evaluated, and the performance of the combination of MIEX and different dosages of PAC was investigated. When MIEX was dosed alone at 20 mL/L, the removal rates of COD, UV254, TN, turbidity and chlorophyll-a were 51.39%, 45.41% , 62.26%, 77.84% and 72.25% respectively, and the removal rates of fluorescent organic compounds were 58.28% to 73.86%. When PAC was dosed alone at 120 rag/L, the removal rates of COD, UV254, TN, turbidity and chlorophyll-a were 48.61%, 38.62%, 41.51%, 88.42% and 85.59% respectively, and the removal rates of fluorescent organic compounds were 14.13% to 29.22%. The combination of MIEX and PAC led to an increase in the removal rates of COD, UV254, TN, turbidity and chlorophyll-a by 9.72% , 2.64% , 1.89% , 18.04% and 26.72% respectively. MIEX pretreatment in the combined process was the main contributor to removal of dissolved organic compounds and TN.

关 键 词：磁性离子交换树脂 混凝 再生水 深度处理 

分 类 号：X703[环境科学与工程—环境工程]