九江市水环境降解系数的测定方法及其影响因素  

Determination Method and Influencing Factors of Water Environmental Degradation Coefficient in Jiujiang City

作　　者：毛宇洛 Mao Yuluo(Jiujiang Three Gorges Water Co.,LTD.,Jiujiang 332000,China)

机构地区：[1]九江三峡水务有限公司,江西九江332000

出　　处：《黑龙江科学》2024年第12期158-161,共4页Heilongjiang Science

基　　金：三峡智慧水务科技有限公司项目资助“陕西省智慧水利一期项目水利模型系统”。

摘　　要：随着城市建设的快速发展,水环境对城市的影响不断凸显。化学需氧量及氨氮是影响地表水体水质的主要污染指标,其降解系数是水质模拟预测、水环境容量计算中的关键。对各类降解系数测定方法进行研究对比,以九江市为研究对象,研究了时间及空间对化学需氧量及氨氮降解系数的影响。结果表明,上游污染物降解系数高于中下游,5、6月份的污染物降解系数普遍高于其他月份。总结了城市水环境降解系数的影响因素,为九江市水环境生态安全评价提供科学依据。With the rapid development of urban construction,the influence of water environment on the city has been highlighted.Chemical oxygen demand and ammonia nitrogen are the main pollution indexes influencing surface water quality.Their degradation coefficient is the key in water quality simulation and prediction,and water environmental capacity calculation.The study compares various methods of the determination of degradation coefficient,and the effects of time and space on chemical oxygen demand and ammonia nitrogen degradation coefficient in Jiujiang City.The results show that the degradation coefficient of pollutants in the upstream is higher than that in the middle and downstream,and the degradation coefficient of pollutants in May and June is generally higher than that in other months.Then the study summarizes the influencing factors of the degradation coefficient of urban water environment,so as to provide scientific basis for the evaluation of water environment ecological security in Jiujiang City.

关 键 词：COD_(Cr) 降解系数K 水环境实验 

分 类 号：X831[环境科学与工程—环境工程]