首页> 外文会议>Biennial conference of the International Association on Water Quality >PURE OXYGEN DESORPTION METHOD - A NEW AND COST-EFFECTIVE METHOD FOR THE DETERMINATION OF OXYGEN TRANSFER RATES IN CLEAN WATER
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PURE OXYGEN DESORPTION METHOD - A NEW AND COST-EFFECTIVE METHOD FOR THE DETERMINATION OF OXYGEN TRANSFER RATES IN CLEAN WATER

机译:纯净氧解吸方法 - 一种新的且经济高效的方法,用于测定清水中的氧气转移率

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Many clean water tests with the well known absorption method using sodium sulphite for deoxynation have shown that there are problems connected with solving these chemicals. Because of this, a new test method was developed at the Darmstadt University of Technology to determine oxygen transfer rates fine bubble aeration systems without sodium sulphite and a cobalt catalyst. The new method is called "Pure oxygen desorption method". Contrary to the absorption method, the oxygen concentration in the test tank is increased well above the normal oxygen saturation concentration. This high excess concentration is obtained by feeding pure oxygen into the main pipe of the fine bubble aeration system. After starting normal aeration, the oxygen concentration in the clean water decreases towards the oxygen saturation concentration by stripping of the excess oxygen. The desorption curve is used to calculate the parameter aeration coefficient k_La and oxygen saturation concentration under process conditions c_∞~*. In comparison to the absorption method with sodium sulphite, the pure oxygen desorption method is a simple and cost-effective method for determining oxygen transfer rates.
机译:许多使用鉴于脱氧的鉴定的吸收方法的许多清洁水试验表明,求解这些化学品有问题。因此,在Darmstadt技术大学开发了一种新的测试方法,以确定没有亚硫酸钠和钴催化剂的氧传输速率细泡曝气系统。新方法称为“纯氧解吸方法”。与吸收方法相反,试验箱中的氧浓度高于正常氧饱和度浓度。通过将纯氧进入细气泡通气系统的主管来获得这种高过量的浓度。开始正常通气后,清洁水中的氧浓度通过剥离过量的氧而朝向氧饱和浓度降低。解吸曲线用于在过程条件下计算参数曝气系数K_LA和氧饱和度浓度C_∞〜*。与亚硫酸钠的吸收方法相比,纯氧解吸方法是一种简单且经济高效的方法,用于确定氧传输速率。

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