摘要
南水北调中线工程的实施对汉江中下游流域的生态环境造成一系列的影响。采用中点概化法和均匀概化法分析不同设计流量下调水前后高锰酸盐指数、NH3-N纳污能力的变化。结果表明,调水后无引江济汉工程时,不同保证率下高锰酸盐指数及NH3-N纳污能力下降幅度分别为35.02%～36.69%、34.00%～52.16%,加入引江济汉工程后下降幅度均减少,分别为12.86%～17.49%、13.50%～37.30%。研究结果可为相关环保部门水污染控制提供理论依据。
Middle route of South-to-North water diversion project caused a series of impacts on the ecological environment of the middle and lower Hanjiang River.In this paper,the midpoint generalization and the uniform generalization methods were used to analyze the changes of the environmental capacity of CODMn and NH3-N before and after water diversion with different design flows.The results show that after water diversion without water diversion project from Yangtze river to Hanjiang River,the decreasing capacity of CODMn and NH3-N under different guarantee rates are 35.02%-36.69%and 34.00%-52.16%,but with the water diversion project from Yangtze River to Hanjiang River,the decreasing capacity is reduced,ranging from 12.86% to 17.49% and from 13.50% to 37.30%.This results can provide theoretical basis for the relevant environmental protection departments to control water pollution.
作者
朱烨
陈燕飞
ZHU Ye;CHEN Yan-fei(College of Resources and Environment,Yangtze University,Wuhan 430100,China;The International Water Ecological Research Institute,Yangtze University,Wuhan 430100,China)
出处
《水电能源科学》
北大核心
2018年第12期34-38,共5页
Water Resources and Power
基金
湖北省环境保护厅科研项目(2015HB17)
湖北省教育厅科学技术研究计划指导性项目(2017-2018)
关键词
纳污能力
中点概化
均匀概化
南水北调中线工程
environmental capacity
generalization of midpoint
uniform generalization
middle route of South-to-North water diversion project
