摘要
为了开发一种测量精度高、稳定性好的污水化学需氧量在线监测仪，对化学需氧量的监测原理、监测仪器的结构和影响仪器监测结果的因素进行了研究。设计正交试验，结合直观分析法和方差分析法，分析影响测量结果的相关因素，确定不同因素的最佳水平。通过对不同催化剂进行试验及分析，选择Ag2SO4为测定工业污水COD的在线监测仪的最佳催化剂，MnSO4为测定生活污水COD的最佳催化剂。采用催化剂MnSO4测定生活污水的COD，仪器具有较好的准确度和精密度，且监测成本大大降低，实现了COD的在线快速、连续、准确自动测量。
In order to develop a wastewater COD on-line monitoring instrument with high accuracy and good stability, the monitoring principle of chemical oxygen demand, structure of monitoring instrument and factors affected the test results of instrument were studied. In order to choose the optimal level of related factors which affect the measurement results, orthogonal experiment was designed to analyze the different factors by direct analysis method and variance analysis method. Ag2SO4 is selected as the best catalyst for the monitoring instrument determination of COD in industrial wastewater and MnSO4 is used as the best catalyst for the monitoring instrument determination of COD in domestic wastewater by analyzing the different catalysts through the experiment. This instrument has good accuracy and precision, and low detection cost when catalyst MnSO4 is used to determine the COD of domestic wastewater. This instrument can measure COD rapidly, continuously, accurately and automatically
出处
《现代科学仪器》
2016年第2期42-48,共7页
Modern Scientific Instruments
基金
湖北省科学技术研究与开发基金资助项目（201397289）
