【摘要】 本文通过对底泥耗氧影响因素的研究,拟定了底泥耗氧速率(SOD)的测定法。对苏州河上海市区各断面底泥进行测定,其SOD为2.0—2.3g/m~2.d,相对标准偏差为5％.根据SOD与水温、水流流速等主要环境因素的关系,推导出城市河流底泥耗氧过程的数学摸式.更多还原

【Abstract】 The various factors affecting the sediment oxygen demand(SOD) were investigated with the object of developing a method for determining SOD in urban rivers. Sediment samples were collected from different reaches of the Suzhou River in Shanghai and measured for their SOD’s. The SOD’s were found to be 2.0 to 2.3g/m2.d, with a relative standard deviation of 5%. On the basis of the study of the relationship of SOD to some main environmental factors such as temperature and velocity, a mathematical model of SOD process in urban rivers was proposed.更多还原