环境保护科学2023，Vol.49Issue(6)：68-76,9.DOI:10.16803/j.cnki.issn.1004-6216.2022100013
基于2种统计分析模型解析网状河流的长期污染趋势和污染源贡献
In-depth understanding of long-term pollution trends and pollution source contributions of reticulated rivers based on multiple statistical analysis models
摘要
Abstract
Taking Jiaojiang River as an example,the water quality and pollution sources of Jiaojiang River were studied.To identify the main parameters and potential pollution sources of Jiaojiang River,five significant water quality indexes,CODMn,DO,NH3-N,TP and FL,were selected by PCA and correlation analysis to represent the water quality data set from 2016 to 2020.And the water quality was evaluated by WQI.Because Jiaonan watershed was the most polluted area,the water quality parameters of several points in Jiaonan watershed were analyzed to further explore the potential pollution sources and their contributions.Using APCS-MLR model and PMF model,four potential pollution sources were identified,and the contribution of each pollution source was calculated.The traceability results of APCS-MLR model were as follows:domestic sewage(28.83%);stormwater runoff(20.42%);industrial wastewater(16.49%);agricultural non-point source(8.98%).In addition,unidentified sources accounted for 25.27%.The traceability results of PMF model were as follows:domestic sewage(39.24%),stormwater runoff(26.49%),industrial wastewater(19.22%)and agricultural non-point source(15.04%).The source analysis results of the two models were the same,which confirmed the accuracy of the traceability results.The research results can provide a scientific basis for the formulation of water quality management and pollution control countermeasures of Jiaojiang,and provide a theoretical and technical support for the treatment of reticulated rivers.关键词
污水源解析/网状河流/APCS-MLR/PMF/椒江Key words
sewage source analysis/reticulatde/APCS-MLR/PMF/Jiaojiang River分类
资源环境引用本文复制引用
杨河振,孙思宇,李思敏,魏东洋,石宇竹,刘文辉,李国文,刘操..基于2种统计分析模型解析网状河流的长期污染趋势和污染源贡献[J].环境保护科学,2023,49(6):68-76,9.基金项目
国家重点研发计划项目(2021YFC3201500) （2021YFC3201500）
