主成分判别分析在社区管网水污染应急溯源的应用  

Principal component analysis and discriminant analysis for source of water pollution in community pipe networks

作　　者：孙喜梦 郝春明 SUN Ximeng;HAO Chunming(School of Safety Engineering,North China Institute of Science and Technology,Yanjiao,065201,China)

机构地区：[1]华北科技学院安全工程学院,北京东燕郊065201

出　　处：《华北科技学院学报》2022年第6期80-86,共7页Journal of North China Institute of Science and Technology

基　　金：河北省自然科学基金资助项目(D2021508004)。

摘　　要：面对突发性管网水污染事件,应急溯源工作尤为重要,需要系统研究。为模拟水污染事件的发生,采集了华北科技学院校园管网总排放口和潜在污染源水样样品,运用主成分判别分析方法进行了应急溯源,并探究了污染机制。结果表明:总排放口水样中COD、磷酸盐、氨氮、SS含量分别为524.00 mg/L、4.33 mg/L、10.30 mg/L及4108.47 mg/L,除COD和SS含量外均满足《污水排入城镇下水道水质标准》(GBT31962-2015)A级限值。主成分和判别分析结果表明总排放口的污染物质主要来自食堂,呈现有机物污染物排放引起的化学性和残渣引起的物理性污染特征。该研究成果为社区管网水污染应急溯源以及处置提供科学依据。In the face of sudden pipe network water pollution,the emergency tracing work is particularly vital and needs systematic study.Thus,the total discharge outlet and potential pollution sources water samples of the campus pipe network of North China Institute of Science and Technology were collected to simulate the occurrence of water pollution events.Principal component and discriminant analysis methods were used to trace the emergency source and explore the pollution mechanism.The results show that the contents of COD,phosphate,ammonia nitrogen and SS in the total discharge outlet water samples are 365.17 mg/L,5.97 mg/L,7.08 mg/L,1022.61 mg/L.COD and SS have exceeded the Class A limit of Sewage Water Quality Standard into Urban Sewer(GBT31962-2015).The results of principal component analysis and discriminant analysis that pollutants of the total discharge outlet come mainly from the canteen,reflecting chemical pollution caused by organic matter and residual physical pollution type.The results provide a scientific basis for the emergency traceability and disposal of water pollution in the community pipe network.

关 键 词：主成分分析 判别分析 应急溯源 水污染 管网 

分 类 号：X830.7[环境科学与工程—环境工程]