城镇污泥中有机物测定方法的比较和探究

Compare the Methods of Determining Organic Matter in Municipal Sludge

摘要: 污泥中有机物含量是污泥稳定化的重要指标。通过重量法、容量法(重铬酸钾法)和仪器法三种方法对两个样品中的有机物进行了检测对比，结果发现重量法比其他两种方法结果偏高一点(分别是49.7%和44.4%，47.1%和41.0%，48.5%和38.1%)。重铬酸钾容量法和仪器法测定结果相差不大(两个样品方法间的相对偏差分别是1.5%和3.7%)。通过三种方法测定了样品中的有机物含量，提示城镇污泥中有机物不同测定方法间的相关性及可比性。

Abstract: The organic matter contented in the municipal sludge is an important index for municipal sludge stabilization. We measured the organic matter in two samples by gravimetric method, volumetric method (potassium dichromate method) and the instrument method, found that weight method was a little higher than the other two methods (49.7% and 44.4%; 47.1% and 44.441.0%; 48.5% and 38.1%). The results of Potassium dichromate volumetric method and the instrument method were similar (method of relative deviation between these two samples were 1.5% and 3.7%, respectively). Here, we compare the results of organic matter content in the samples by three methods, suggesting the correlation between different methods of organic matter in municipal sludge.