超临界水氧化处理含油废水的实验研究  

Treatment of oil-bearing sewage by supercritical water oxidation

作　　者：王亮[1] 王树众[1] 张钦明[1] 赵威[1] 林宗虎[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《环境污染与防治》2005年第7期546-549,共4页Environmental Pollution & Control

基　　金：国家重点基础研究发展计划(No.2003CB214500)。

摘　　要：在间歇式超临界水氧化反应装置上进行含油废水的超临界水氧化实验研究,反应温度390～430℃、压力24～28MPa、反应时间30～90s。研究表明:超临界水氧化法是一种高效、快速的有机废弃物处理技术;随反应时间增加、温度升高,废水COD去除率显著增大;以幂函数方程描述了氧化剂过量时含油废水超临界水氧化的反应动力学规律,氧化反应对废水的反应级数为1级,在26MPa时,反应活化能和频率因子分别为(5896.83±243.68)J/mol和(0.0652±0.0028)s-1,模型计算值与实验值的误差为±13%。Oil-bearing sewage treated by supercritical water oxidation technique （SCWO） was studied in intermittent equipment at 390～430 C, 24～28 MPa, reaction residence time 30～90 s. Experimental results showed that SCWO is a high-efficiency organic waste treatment and disposal technique, and temperature and residence time are the main influencing factors in removing COD from oil-bearing sewage and removal rate of COD was obviously increases as temperature and residence time extend. The global kinetics for oil-bearing sewage COD removal can be described by a power-law equation, which is first order in sewage COD when having excess oxidant. The frequency factor k0 and activation energy Ea are （5 896. 834±243.68） J/mol and （0. 065 2±0. 002 8） s^-1 at 26 MPa, respectively , and the deviation between model calculated and experimental results was approximately within 13%.

关 键 词：超临界水氧化 含油废水 影响因素 动力学 超临界水氧化法 氧化实验 氧化处理 有机废弃物处理 COD去除率 反应装置 

分 类 号：X703[环境科学与工程—环境工程] TS272.52[农业科学—茶叶生产加工]