株洲市一江四港再生水补水方案研究

发布时间：2018-10-23 12:27

【摘要】：长株潭城市群三大核心之一的株洲市,近年由于需水量的增加和污染物超标超量的排放致使四港河水清澈见底、鱼虾成群的景象成为历史。调研知道污水再生回用可以节约水资源,缓减污水排放压力,是缓解水资源危机的重要举措。研究一江四港在特枯年(P=95%)生态基流能否得到满足、水质能否达标、如何对其进行再生水补水非常有必要。本论文以《株洲市水生态文明建设项目技术咨询》项目为依托,以株洲市完成2030年规划目标为前提,以株洲市特枯年缺水月为基准进行再生水补水研究,基于MIKE21 FM模型构建一江四港水量水质耦合模型,模拟一江四港再生水补水方案。本论文取得的主要研究成果如下:(1)研究了一江四港生态基流。基于湘江长系列流量资料及四港多年平均流量,首先通过水文学法、流量频率分析和水文比拟法确定了一江四港逐月生态基流;其次结合频率分析和水文比拟法确定了一江四港在特枯年的逐月平均流量;最后确定在特枯年一江四港的生态基流保证率为91.67%,缺水月均为四月。(2)评价分析了一江四港现状水质。基于株洲市环保局所提供的一江四港水质检测数据,依据《地表水环境质量标准》(GB3838-2002)确定采用单因子指数法和污染物超标倍数评价分析一江四港现状水质,结果显示湘江水质较好,四港水质较差。(3)构建了一江四港水量水质耦合模型。基于MIKE21 FM模型,依据收集到的一江四港水文地形数据构建了一江四港水量水质耦合模型,同时对模型参数进行了率定和验证,结果显示该模型可以用于模拟研究。(4)拟定了一江四港再生水补水方案。以株洲完成2030年规划目标为前提,以特枯年缺水月四月为基准拟定其再生水补水方案,补水量分别是0%、10%、15%、20%。(5)模拟了一江四港再生水补水方案。基于构建好的模型,模拟拟定好的再生水补水方案,综合分析确定在特枯年4月份的最佳再生水补水方案是霞湾港和白石港不补水,建宁港和枫溪港补水20%。
[Abstract]:Zhuzhou City, one of the three cores of Chang-Zhu-Tan Urban agglomeration, in recent years, due to the increase of water demand and the excessive discharge of pollutants, the water of Sigang River becomes clear, and the scene of fish and shrimp swarm becomes a history. The investigation shows that the reuse of sewage can save water resources, reduce the pressure of sewage discharge, and is an important measure to alleviate the crisis of water resources. It is very necessary to study whether the ecological basic flow and water quality can be satisfied and how to recharge the water in the special dry year (P95%) of the four ports of the Yangtze River. Based on the project of "Water Ecological Civilization Construction Project of Zhuzhou City", this paper takes Zhuzhou City as the premise to complete the 2030 planning goal, and takes the special dry year water shortage month of Zhuzhou City as the benchmark to carry out the research on reclaimed water recharge. Based on the MIKE21 FM model, a coupling model of water quantity and water quality of a river and a port is constructed, and the reclaimed water recharge scheme of a river and a port is simulated. The main results obtained in this paper are as follows: (1) the ecological basic flow of one river and four ports is studied. Based on the long series discharge data of Xiangjiang River and the average discharge of four ports for many years, the monthly ecological basic flow of one river and four ports is determined by hydrology method, flow frequency analysis and hydrological analogy method. Secondly, combined with frequency analysis and hydrologic analogy method, the monthly average discharge of a river and a port in a special dry year is determined, and the guarantee rate of the ecological basic flow in a special dry year is 91.67 and the water shortage month is April. (2) the present situation of water quality in a river is evaluated and analyzed. Based on the water quality test data provided by Zhuzhou City Environmental Protection Bureau, and according to the Surface Water Environmental quality Standard (GB3838-2002), it is determined to use single factor index method and pollutants exceeding the standard multiple to evaluate and analyze the current water quality of the four ports in one river. The results show that the water quality of Xiangjiang River is better than that of the four ports. (3) the coupling model of quantity and water quality of one river and four ports is constructed. Based on the MIKE21 FM model, the coupled model of water quantity and water quality of one river and four ports is constructed according to the hydrographic topographic data collected, and the parameters of the model are determined and verified. The results show that the model can be used for simulation research. (4) A reclaimed water recharge scheme for a river and four ports is proposed. On the premise of Zhuzhou's completion of the 2030 planning goal, the reclaimed water recharge plan was drawn up on the basis of the special dry year, water shortage month, April, and the water recharge amount was 0 ~ 1010 / 15 / 20 respectively. (5) the reclaimed water recharge scheme for the four ports of one river and four ports was simulated. Based on the established model, the reclaimed water recharge scheme is simulated and drawn up, and the optimal reclaimed water recharge scheme in April is determined to be that Xiawan Port and Baishi Port do not replenish Water, Jianning Port and Fengxi Port replenish Water 20g.
【学位授予单位】：西安理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV213.4

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