Method of Water Quality Improvement for Urban Lake Based on Concentrated and Distributed Water Diverting
Method of Water Quality Improvement for Urban Lake Based on Concentrated and Distributed Water Diverting
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发表时间：
2011
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通讯作者：
Yuan Guo-qing
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作者：
Yuan Guo-qing
通过向城市湖泊中引入清洁水来进行增流和水更新是改善湖泊水质的有效手段，但通常采用的集中引水存在因湖泊中的海湾而形成死水区的缺点，从而降低了水质改善的效果。为解决这一问题，本文提出了高流量集中调水与低流量分散调水相结合的调水方案，并对调水地点、流量、设施、通过对工程布置方案、运行方案的比较，分析了工程布置方案、运行方案的优缺点，探讨了工程布置方案、运行方案、运行方案的选择，提出了工程布置方案、运行方案的设计原则，并对工程布置方案、运行方案、运行方案进行了分析，提出了工程布置方案、运行方案、运行方案的设计原则，提出了工程布置方案、运行方案的设计原则，提出了工程布置方案、运行方案的设计原则。在一个真实的城市湖泊中的试验表明，集中调水与分散调水相结合的方法可以显著提高水质改善效果。
Flow augmentation and water renewal via diverting clean water into an urban lake is an effective means for improving lake water quality.However,concentrated water diverting that is usually employed has the disadvantage of creating dead water areas due to the bays in the lake,which reduces the effectiveness of water quality improvement.To solve this problem,a procedure of concentrated water diverting at relatively higher flow-rate combined with dis-tributed one at relatively lower flow-rate was presented in this paper.The determination of places,flow rates,facilities,direction and velocity of water diverting,outflow length,elevation,and the operation were discussed.The method of hydrodynamics,contamination transportation mathematical model and particle tracing were applied synthetically.In comparison of the alternatives of engineering arrangement and their operation programs based on the data of the flow fields and concentration fields,an optimal alternative and procedure has been identified.Test in a real urban lake shows that,the proposed procedure of concentrated water diverting combined with distributed one can significantly increase the effectiveness of water quality improvement.