滨海新区地表水水质评价与污染源分析

滨海新区在大力发展工业的同时，面临水资源紧缺与水环境恶化等问题，基于2020年至2021年滨海新区内15个监测站位的丰水期、枯水期实测数据，通过改进型加拿大水质指数模型对滨海新区地表水进行水质评价，在水质评价的基础上，利用相关性分析与绝对主成分-多元线性回归模型分析影响地表水水质状况的污染源。15个水质监测站位水质评价结果表明：丰水期水质指数为32.27～82.80,良好水质站位1个，中等水质站位6个，较差水质站位7个，差等水质站位1个；枯水期水质指数为47.28～81.36,良好水质站位1个，中等水质站位12个，较差水质站位2个。污染源分析结果表明：丰水期中，污染源为生活污水、农业面源污染、养殖尾水点源污染；枯水期中，主要污染源为工业废水、生活污水、养殖尾水面源污染。

Surface Water Quality Evaluation and Pollution Source Analysis in Binhai New Area

While vigorously developing industry,Binhai New Area is facing problems such as water scarcity and deterioration of surface water environment.Basing on the measured data of 15 monitoring stations in Binhai New Area during the wet and dry seasons from 2020 to 2021,the surface water quality is evaluated according to Modified Canadian Water Quality Index (MCWQI) model.The correlation analysis and the absolute principal component-multiple linear regression (APCS-MLR) model were used to analyze the source identification of surface water pollutants.The surface water quality evaluation results showed the water quality index values in the wet season were 32.27-82.80,in which 1 station is good water quality,6 stations are fair water quality,7 stations are marginal water quality and 1 station is poor water quality.The water quality index values in the dry season were 47.28-81.36,in which 1 station is good water quality,12 stations are fair water quality and 2 stations are marginal water quality.The results of pollution source analysis showed that the main pollution sources are sanitary sewage,agricultural non-point source pollution,aquaculture tail water point source pollution during the wet season.Industrial wastewater,sanitary sewage,aquaculture tail water non-point source pollution are the main pollution sources during the dry season.