2016—2020年秦皇岛市入海河口水质变化规律分析  

Analysis of Water Quality Change Trend at the Estuary of Qinhuangdao City from 2016 to 2020

作　　者：张艳军 ZHANG Yanjun(Environmental Monitoring Center of Qinhuangdao,Qinhuangdao 066000,China)

机构地区：[1]秦皇岛市环境监控中心,河北秦皇岛066000

出　　处：《中国资源综合利用》2024年第2期130-132,共3页China Resources Comprehensive Utilization

摘　　要：入海的河口是连接海洋与河流的纽带,易受到陆地上人类活动影响,河口水质受到人们的广泛关注。本文选取秦皇岛市主要河口的7个监测断面,采集高锰酸盐指数(CODMn)、氨氮(NH_(3)-N)、总磷(TP)及总氮(TN)等水质监测数据,根据《地表水环境质量标准》(GB 3838—2002),分析秦皇岛市的主要河口水质。结果表明,2016—2020年,人造河口水质由Ⅴ类升为Ⅳ类;饮马河口水质由劣Ⅴ类升为Ⅲ类;汤河口水质由Ⅳ类升为Ⅱ类;戴河口水质由Ⅲ类升为Ⅱ类;洋河口水质由Ⅲ类升为Ⅱ类;石河口水质由Ⅲ类升为Ⅱ类;新开河口水质为Ⅱ类,没有明显的变化。7个河口主要污染物均为TN,并且超标严重。7个监测断面的各指标浓度年均值显示,2020年,除TN外,人造河口水质为Ⅳ类,其余河口水质为Ⅲ类;各监测断面TN浓度年均值均明显高于Ⅲ类水质标准值,表明污染物以TN为主。The estuary into the sea is a link between the ocean and rivers,and is easily affected by human activities on land,and the water quality of the estuary has received widespread attention from people.This paper selects 7 monitoring sections from the main estuaries in Qinhuangdao City,collects water quality monitoring data such as permanganate index(CODMn),ammonia nitrogen(NH_(3)-N),total phosphorus(TP),and total nitrogen(TN),and analyzes the water quality of the main estuaries in Qinhuangdao City according to the“Surface Water Environmental Quality Standards”(GB 3838—2002).The results show that from 2016 to 2020,the water quality of Renzao River Estuary has been upgraded from ClassⅤto ClassⅣ;the water quality of Yinma River Estuary has been upgraded from poor ClassⅤto ClassⅢ;the water quality of Tanghe River Estuary has been upgraded from ClassⅣto ClassⅡ;the water quality of Daihe River Estuary has been upgraded from ClassⅢto ClassⅡ;the water quality of Yanghe River Estuary has been upgraded from ClassⅢto ClassⅡ;the water quality of Shihe River Estuary has been upgraded from ClassⅢto ClassⅡ;the water quality of Xinkai River Estuary is classified as ClassⅡ,with no significant changes.The main pollutants in the seven estuaries are all TN,and they exceed the standard severely.The annual average concentration of each indicator in 7 monitoring sections shows that in 2020,except for TN,the water quality of Renzao River Estuary is classified as ClassⅣ,while the water quality in other estuaries is classified as ClassⅢ;the average annual concentration of TN in each monitoring section is significantly higher than the ClassⅢwater quality standard value,indicating that TN is the main pollutant.

关 键 词：入海河口 水质 变化规律 总氮 秦皇岛市 

分 类 号：X824[环境科学与工程—环境工程]