水体沉积物中石油类物质释放过程动力学研究  

RELEASE DYNAMICS OF OIL POLLUTANTS FROM SEDIMENTS IN WATER BODY

作　　者：郭超[1] 黄廷林[1] 丁煜[2] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055 [2]中冶南方工程技术有限公司水道室,武汉430223

出　　处：《环境工程》2011年第5期56-59,共4页Environmental Engineering

基　　金：国家自然科学基金资助项目(50378077)

摘　　要：模拟水体沉积物中石油类物质向水相中释放的动力学过程,探讨在不同石油污染强度下,石油物质在水相中饱和浓度的变化。研究结果表明:上述过程可以用滞膜模型进行描述,释放过程为典型的一级动力学过程,沉积物中石油含量与水相中石油的释放浓度呈正向关系,在相同的释放条件下,污染强度越高,水相中石油的饱和浓度越高,释放速度也越快。Release process and dynamics of releasing oil pollutants from sediments were simulated.The changes of oil pollution concentration released from sediments at aqueous phase were discussed.The results showed that release process was a typical first-order process,which could be well characterized by a stagnant film model.The relationship between oil pollutant concentration in sediments and oil pollution concentration at aqueous phase was positive,which mean that the higher the pollution concentration,the higher the oil saturated concentration at aqueous phase,and the faster the release speed under the same release condition.

关 键 词：石油污染物 释放动力学 沉积物 滞膜模型 

分 类 号：X13[环境科学与工程—环境科学]