城市河道水体富营养化污染特征分析  

Analysis on the characteristics of eutrophication pollution of water bodies in urban river

作　　者：纪桂霞[1] 任振兴 杨继柏 JI Guixia;REN Zhenxing;YANG Jibai(School of Environment and Architecture,University of Shanghai for Science and Technology,Shanghai 200093,China;Qingyi Ecological Environment Technology Co.,Ltd.,Shanghai 201799,China)

机构地区：[1]上海理工大学环境与建筑学院,上海200093 [2]青谊生态环境科技有限公司,上海201799

出　　处：《上海理工大学学报》2022年第5期502-507,共6页Journal of University of Shanghai For Science and Technology

基　　金：国家重点研发计划(2018YFD1100502-01)。

摘　　要：通过对上海市某河道水质的实测调查数据,分析了河水富营养污染因子的时空分布特征,采用综合营养状态指数法对水体富营养污染程度进行了评价,结果表明:河水水质指标Chla,TN,COD_(Mn)均呈现夏季高、冬季低的变化规律,而SD冬季高、夏季低,TP随季节变化不显著。7月水体污染最严重,水体的COD_(Mn),TN平均浓度均超Ⅴ类水质标准约2倍,Chla与SD处于劣Ⅴ类水平,TP处于Ⅴ类水平,该河道氮和有机物污染严重。冬季,水体主要为轻度富营养状态,春、秋季,水体主要处于中度富营养状态,夏季6月,在4~6河段出现了重度富营养状态,7~8月水体整体呈现重度富营养状态,河道易暴发水华。控制外源污染物排入,并加强河道水质监测、评价和富营养状态预报,是防治河流黑臭水华,实现城市碧水的关键。Through the measured survey data of the water quality of a river in Shanghai,the space-time distribution characteristics of eutrophic pollution factors in river water were analyzed,and the eutrophic pollution degree of the water body was evaluated by the comprehensive nutrient status index method.Results show that the river water quality indexes of Chla,TN,and COD_(Mn)all presented high values in summer and low values in winter,while SD was high in winter and low in summer,and TP did not change significantly with the seasons.The water pollution was the most serious in July.Both the average concentrations of COD_(Mn)and TN in the water body were about 2 times higher than the water quality standard of class V.Chla and SD were at the inferior class V level,and TP was at the class V level.The river water was seriously polluted by nitrogen and organic matter.The water body mainly presented mild eutrophic state in winter.In spring and autumn,the water body was mainly in moderate eutrophic state.Severe eutrophication occurred in the segment 4~6 of the river in summer(June).From July to August,the water body presented severe eutrophication,and the eutrophication bloom of the whole river was prone to burst out.Controlling the discharge of exogenous pollutants,strengthening the monitoring and evaluation,and forecasting eutrophic state of the river water were the keys to control the black smelly eutrophication of river water and realize urban water clarity.

关 键 词：城市河水 富营养因子 时空分布特征 综合营养状态指数 

分 类 号：X703[环境科学与工程—环境工程]