树脂对稠油污水中Ca^(2+)、Mg^(2+)的吸附动力学及机理研究  

Study on kinetics and mechanism of adsorption for Ca^(2+) and Mg^(2+) in the wastewater by resins

作　　者：詹咏[1] 许颖[1] 董滨[2] 谢加才[3] 蒋生健[4] 

机构地区：[1]上海理工大学环境与建筑学院,上海200093 [2]同济大学环境科学与工程学院,上海200092 [3]中国石油辽河油田分公司,辽宁盘锦124010 [4]中国石油辽河油田分公司欢喜岭采油厂,辽宁盘锦124114

出　　处：《水资源与水工程学报》2012年第4期102-106,共5页Journal of Water Resources and Water Engineering

基　　金：中国石油天然气集团公司科学研究与技术开发项目:高含硅稠油污水回用锅炉先导试验研究(2010B-1307);上海市科委-污水处理领域共性关键技术及产品研究(08DZ2290602);上海市教委重点学科建设项目资助(J50502)

摘　　要：随着国内油田稠油的不断开采和水资源的日趋紧张,需要将稠油污水进行软化处理和回收利用。根据稠油污水的特性,分别对大孔强酸树脂、大孔弱酸树脂、凝胶强酸树脂、大孔氨基磷酸树脂和大孔亚氨基二乙酸树脂这五种常用树脂进行了静态筛选实验,并且进行了动力学研究,得出拟二级反应动力学模型能更好地描述树脂对稠油污水中Ca2+、Mg2+的吸附行为。由模型结果可知,吸附速率同时受粒内扩散和液膜扩散的影响,但粒内扩散是吸附速率的主要控制步骤。with the continuous mining of heavy oil in domestic oilfield and shortage of water resources,the effective treatment and recycling of heavy oil wastewater are urgent.According to the characters of heavy oil wastewater,the kinetics of the sorption of humic acid onto five macro porous adsorption resins in aqueous solution was investigated in batch experiments.The experiments showed that the pseudo second-order equation could describe the sorption process of Ca2+ and Mg2+ in heavy oil wastewater.However,from the model we can conclude that the adsorption rate was controlled by film diffusion and particle diffusion simultaneously,but particle diffusion was the key step of the adsorption rate.

关 键 词：稠油污水 软化 离子交换树脂 吸附 

分 类 号：X74[环境科学与工程—环境工程]