论文部分内容阅读
化学耗氧量(即COD)是测定样品中易被强化学氧化剂氧化的物质所消耗氧的数量,以每升污水消耗氧的毫克数表示。它能间接示出水中有机物质含量的多少。因此,是评价水质污染程度的重要指标。在污水处理工艺小,也可用COD值的变化来反映污水被净化的程度。合脂浓废水中主要含水溶性的一、二元酸、酯和少量脂肪醇等有机物。目前合脂工业有关单位采用的测定方法不尽统一,有的用快速法,有的用标准法。为了确定合脂废水在测定COD时被氧化的程
Chemical Oxygen Demand (COD) is the amount of oxygen consumed to determine the amount of oxygen in a sample that is easily oxidized by a strong chemical oxidizer, expressed as milligrams per liter of wastewater. It indirectly shows the amount of organic matter in the water. Therefore, it is an important index to evaluate the degree of water pollution. In the sewage treatment process is small, but also available COD value changes to reflect the degree of sewage purification. Fat fat concentrated mainly water-soluble one, two acids, esters and a small amount of fatty alcohol and other organic matter. At present, the measurement methods adopted by the relevant units of the grease industry are not uniform, some use the fast method, and some use the standard method. In order to determine the fat oxidation of COD in the oxidation process