硬硅钙石吸附焦化废水氨氮动力学性能研究  

Absorbing Dynamic Performance Study on Coking Wastewater Ammonia Nitrogen by Xonotlite

作　　者：韩剑宏[1] 胡彩霞[1] 郝敏[2] 韩春鹏[3] 李艳峰 

机构地区：[1]内蒙古科技大学能源与环境学院,内蒙古包头014010 [2]北京科技大学土木与环境工程学院,北京100083 [3]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [4]青岛海洋热电化工设备有限公司,内蒙古包头014000

出　　处：《工业安全与环保》2008年第9期6-8,共3页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金资助项目(50172009);内蒙古教育厅高校基金(NJ06143)

摘　　要：用纳米级吸附材料硬硅钙石对焦化废水氨氮进行脱氮试验研究。结果表明,硬硅钙石对氨氮吸附平衡时间为180 min,吸附等温线符合Freundlich和Langmuir方程,吸附等温式为qe=0.434 5Ce0.326 9和qe=0.074 5Ce/(1+0.028 3Ce),1/n=0.326 9在0.1-0.5之间,可以作为焦化废水氨氮的吸附剂使用,计算单层吸附最大吸附量为2.635 7 mg/g。当投加量为2.5 g/100 mL时,硬硅钙石与活性炭对焦化废水氨氮平衡吸附量分别为1.35 mg/g和1.60 mg/g,对氨氮的去除率分别为45.55%和47.25%,两者处理效果差异不断减少。The de-nitrogenized experimental research is carried out to investigate the effect of treating coking wastewater ammonia nitrogen by xonotlite,a kind of nanophase absorbing material,experiments show that xonotlite can effectively absorb the ammoria nitrogen and the adsorption equilibrium time is 180 min and adsorption isotherm of xonotlite corresponds with Freundlich and Langmuir equation.The adsorption isotherms of xonotlite are qe=0.4345 Ce^0.3269 and qe=0.0745 Ce/（1＋0.0283 Ce）,1/n=0.3269 is between 0.1-05,so the xonotlite material can be used to the adsrption of coking wastewater ammonia nitrogen.Mondayer maximum adsorption capacity is 2.6357mg/g.When the dosing qusntity is 2.5g/100mL,the NH3-N adsorption capacity of xonotlite and activated carbon on coking wastewater are 1.35mg/g and 1.60mg/g respectively and HN3-N removal rate are 45.55% and 47.25%.

关 键 词：硬硅钙石 焦化废水 氨氮 吸附 

分 类 号：X784[环境科学与工程—环境工程] TU551.37[建筑科学—建筑技术科学]