核心区上游水系水质情况分析与治理建议

Analysis of Water Quality of Upstream River System in Core Area and Suggestions for Treatment

近几年,随着经济的高速发展和人们生活质量的不断提高,市民对身边水环境的关注力度越来越大,因此首都中心城区水环境受到极大的关注。本文从南长河、双紫支渠和转河入手,为全面了解核心区上游水体富营养化的变化情况,2021年4月至10月,周期性监测水体的水温、pH、透明度(SD)、溶解氧(DO)、高锰酸盐指数(COD_(Mn))、五日生化需氧量(BOD_(5))、氨氮(NH_(3)-N)、总氮(TN)、总磷(TP)和叶绿素a(chla),系统地对三条河道进行生态系统分析。结果表明,从目前水体富营养化程度来看,4月、7月为轻度富营养化程度,5月、6月、8月、9月和10月为中营养化程度。根据目前水质情况及存在的水环境问题,最终提出六点预防和治理措施来保障核心区水系的健康。

In recent years,with the rapid economic development and the continuous improvement of people’s quality of life,citizens are paying more and more attention to the water environment around them,therefore,the water environment in the central urban area of the capital has received great attention.In this paper,starting with Nanchang River,Shuangzi Branch Canal and Zhuanhe River,in order to fully understand the changes in the eutrophication of the upstream water body in the core area,from April to October 2021,the water temperature,pH,Secchi depth(SD),dissolved oxygen(DO),permanganate index(COD_(Mn)),five-day biochemical oxygen demand(BOD_(5)),ammonia nitrogen(NH_(3)-N),total nitrogen(TN),total phosphorus(TP)and chlorophyll a(chla)of the water body are monitored periodically,and ecosystem analysis of the three river channels is carried out systematically.The results show that from the current degree of eutrophication,April and July are mild eutrophication,and May,June,August,September and October are moderate eutrophication.According to the current water quality and existing water environment problems,six prevention and control measures are finally put forward to ensure the health of the water system in the core area.