安海湾海域主要污染因子识别与来源分析

Identification and Source Analysis of Main Pollutants in the Anhai Bay Area

本文以安海湾为研究对象,根据安海湾省控站位FJS0509站2016—2020年海水水质监测数据及2021年7—9月水质调查数据,对安海湾水环境质量进行分析。结果表明,近几年安海湾主要污染因子为活性磷酸盐和无机氮,主要污染来源为陆域排污。又根据南安、晋江两市2020年入海排污口调查数据,对安海湾主要超标因子进行溯源研究。结果表明,南安市的氮磷排污总量高于晋江市;而晋江市的污染物排放浓度高于南安市。为提升安海湾水质,改善安海湾生态环境,提出了两市联动,协同开展排海污染物总量控制,同时增加海水水质监测频率的建议。

Taking Anhai Bay as the research object,based on the seawater quality monitoring data from station FJS0509 of Anhai Bay Provincial Control Station from 2016 to 2020 and the water quality survey data from July to September 2021,an analysis of the water environment quality of Anhai Bay is conducted.The results indicate that in recent years,the main pollutants in Anhai Bay are reactive phosphates and inorganic nitrogen,primarily originating from land-based pollution.Based on the investigation data of marine outfalls in Nan’an and Jinjiang cities in 2020,a source tracing study is conducted on the main pollutants exceeding standards in Anhai Bay.The results show that the total nitrogen and phosphorus discharge from Nan’an City is higher than that from Jinjiang City,while the pollutant emission concentration in Jinjiang City is higher than that in Nan’an City.In order to improve the water quality of Anhai Bay and enhance the ecological environment,it is suggested that the two cities collaborate to jointly implement total pollutant control in marine discharge and increase the frequency of seawater quality monitoring.