城市河流大气复氧系数规律研究  

An Experimental Study on Reaeration Coefficient in Urban River Water Bodies

作　　者：孙远军[1] 卢士强[1] 邵一平[1] 陈义中[1] 李柱 Sun Yuanjun;Lu Shiqiang;Shao Yiping;Chen Yizhong;Li Zhu(Shanghai Academy of Environmental Sciences, Shanghai 200233;Shanghai Pudong New Area Water Corporation Limited,Shanghai 201200)

机构地区：[1]上海市环境科学研究院,上海200233 [2]上海浦东新区自来水有限公司,上海201200

出　　处：《上海环境科学》2019年第3期93-96,133,共5页Shanghai Environmental Sciences

基　　金：上海市科学技术委员会科研项目(编号:16DZ1204805,17DZ1202500);国家重点研发计划(编号:2017YFC0405400)资助

摘　　要：以上海市的蒲汇塘河流为研究对象,通过环形水槽开展河水的静态大气复氧试验和动态大气复氧试验。静态条件下蒲汇塘河水的大气复氧系数为0.087 d^-1,动态条件下的大气复氧系数在4.83~48.68 d^-1 之间。将流速与复氧系数的试验测定值进行统计分析,得出二者呈幂函数关系,其表达式为k2=485.36 u^2.38。Taking Puhuitang River in Shanghai as the research object, a series of steady and dynamic tests was carried out through an annular water tank. Under steady conditions, the reaeration coefficient in Puhuitang River water was 0.087 d^-1, whilst the range of that varied between 4.83 ~ 48.68 d^-1 under dynamic conditions. When current velocities and related observed values of reaeration coefficient in the tests were statistically analysed, it was concluded that there was a power function relation in between with the expression being as k2=485.36 u^2.38.

关 键 词：水体大气复氧 表面传质系数 复氧系数 

分 类 号：X824[环境科学与工程—环境工程]