绣针河岚山段水质现状与成因分析

Current Situation and Cause Analysis of Water Quality in Xiuzhen River

本文研究绣针河日照市岚山区段水质现状,具体为2021年10月至2022年9月对绣针河水质进行监测,采用了单项参数评价法和综合水质标识指数法对水质现状进行评价,并估算了各个污染指标的分担率。分析结果表明绣针河在11月、4月、7月和9月水体呈污染状态,TP和有机物是造成水质污染的主要污染物质。研究期间TN和TP的关系表明在2021年10月至2022年4月期间,绣针河水中TN浓度(9.6±2.3mg/L)较高,为磷限制状态;2022年6月-9月水体富营养化风险高,同时表明,雨水的冲刷作用是造成绣针河雨季水体污染重要原因。

This paper studied the current situation of water quality in Lanshan District,the water quality of Xiuzhen River from October 2021 to September 2022 was monitored,the single parameter evaluation method and the comprehensive water quality identifi cation index method were used to evaluate the water quality,and the sharing rate of each pollution index was estimated.The results show that Xiuzhen River is polluted in November,April,July and September,and TP and organic matter are the main pollutants.The relationship between TN and TP during the study period showed that the TN concentration in the river was high from October 2021 to April 2022(9.6±2.3 mg/L),which was a phosphorus-limited state;The possibility of eutrophication is high from June to September 2022.The study also shows that rain erosion is an important cause of water pollution in the rainy season of Xiuzhen River.