污染源废水中TOC与COD的相关性研究  

Correlative Study on TOC and COD in Wastewater of Pollution Source

作　　者：韦利杭[1] 

机构地区：[1]浙江省环境监测中心,杭州310012

出　　处：《现代科学仪器》2009年第4期76-80,共5页Modern Scientific Instruments

基　　金：该研究项目的组织单位为浙江省环境保护科学设计研究院;主要参加单位为浙江省环境监测中心;浙江环茂自控科技有限公司以及岛津国际贸易(上海)有限公司

摘　　要：采用岛津公司的TOC自动分析仪测定不同行业的工业废水和污水处理厂排水中的TOC,同时用实验室的标准方法测定COD。将获得的数据运用统计学的方法加以回归分析,建立线性回归方程,进行相关性检验;并利用回归方程将TOC值换算成COD值后,与实验室分析的实测值比较,计算相对误差。结果表明,涉及的1 4家企业排放废水中的TOC与COD之间均存在显著的相关性,相关系数为0.718～0.981(各家企业的有效样本数为12～20);其中9家企业计算的相对误差均小于20%,可以满足污染源水质在线监测的要求,而其余5家企业由于排放废水的成分比较复杂或发生变化,计算的相对误差较大,其定量关系可根据实际情况加以修正。该研究对目前国家实施的节能减排和有机污染物总量控制等举措具有重要意义。Total organic carbon （TOC） in different kinds of industrial wastewater and sewage effluent was measured by TOC automatic analyzer of SHIMADZU CORPORATION, and COD was simultaneously determined by standard method of laboratory. After analyzing the data by regression statistics, linear regression equation was established and correlations were examined as well. Besides, the value of TOC was converted into COD by regression equation in order to calculate the relative errors between the conversion value and measured value. The results indicated that there were significant correlations between TOC and COD in the wastewater of 14 enterprises. The correlation coefficients were under the range of 0.718-0.918（12 to 20 samples for each enterprise）. The relative errors were less than 20% for 9 enterprises, which met the demands of the water quality on-line monitoring of pollution source. However, for the other 5 enterprises, the relative errors were greater due to the complicated compositions or composition changes in the wastewater. Above the fixed quality relation should be amended according to the actuality situation. This research is very important to the energy saving, emission reduction and the total amount control of organic pollutants.

关 键 词：TOC COD 污染源 废水 在线监测 总量控制 

分 类 号：X832[环境科学与工程—环境工程]