二次供水管网中生活饮用水TOC和COD回归分析研究——以CPVC管网为例  

Regression Analysis on TOC and COD of Drinking Water in Secondary Water Supply Pipe Network——Taking CPVC Pipe Network as An Example

作　　者：高爱 徐桂芹[1] Gao Ai;Xu Guiqin(Department of Safety Engineering,China University of Labor Relations,Beijing 100048,China)

机构地区：[1]中国劳动关系学院安全工程系

出　　处：《环境科学与管理》2019年第7期15-18,共4页Environmental Science and Management

基　　金：水体污染控制与治理科技重大专项(项目名称:建筑水系统微循环重构技术研究与示范;项目编号:2014ZX07406002)

摘　　要：总有机碳(TOC)和化学需氧量(COD)常用来衡量水中有机物污染程度,理论上二者存在一定关系。以CPVC管为实验材料,运用SAS软件及数理统计知识,对模拟二次供水管网饮用水TOC和COD进行回归分析,建立了TOC和COD的回归方程。t检验结果表明,分析得到TOC和COD之间的线性关系具有统计学意义,对方程进行精密度检验,得到对每一测得的TOC,对应的COD在COD=0.35151+0.15792×TOC±0.36548之间,可通过TOC检测结果预测COD的理论值,为生活饮用水TOC的自动化连续检测逐步取代COD检测作为衡量饮用水有机物含量的主要指标提供实践依据。Total Organic Carbon(TOC) and Chemical Oxygen Demand(COD) are commonly used to measure the degree of organic contamination in water.In theory,there is a linear relation between these two indicators.Taking CPVC pipe as experiment material,this study conducted a regressive analysis on TOC and COD of the simulated secondary water supply pipe network bases on SAS and statistical knowledge,as well as establish the regressive equation between TOC and COD.The result of T test shows that the linear relation between TOC and COD has statistical significance.According to the precision test of this equation,for each TOC value,the corresponding COD is in the range of 0.351 51 + 0.157 92 ×TOC± 0.365 48 in accordance with results.On the basis of the new relationship,the theoretical value of COD can be predicted by test results of TOC,which can provide practical basis for the automation continuous testing of TOC of drinking water gradually replaces the testing of COD and then being the main indicator that can measure the organic content in drinking water.

关 键 词：二次供水管网 CPVC管 总有机碳 化学需氧量 回归分析 

分 类 号：X52[环境科学与工程—环境工程]