云南安宁炼油厂西部岩溶区地下水污染防控管理模型

发布时间：2018-01-09 14:21

本文关键词：云南安宁炼油厂西部岩溶区地下水污染防控管理模型　出处：《昆明理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：安宁市是云南省重要的粮食产区和工业区,地下水是该市主要的饮用水源和工业水源,随着西南地区经济的加速发展,石油消耗量日益增长,为减少交通运输成本,促进西南地区的经济发展,因此建造了安宁炼油厂。炼油厂位于该市南部,在石油的加工过程中,厂区的重点防渗区一旦发生泄漏极易对地下水环境造成污染,构成了地下水环境显著的潜在污染源,为保证安宁市草铺镇泉点及地下水开采井不受污染,及时准确地掌握厂区周围地下水环境污染控制状况,建立厂区防污监控及应急处理系统是十分必要的。因此征对研究区潜在的环境污染问题以运筹学为基础,结合数值模拟软件GMS建立研究区管理模型,通过在MODFLOW和MT3DMS模型上对给定含水层系统进行建模来模拟地下水流和污染运输过程。然后将验证完成的模拟模型与优化模型耦合,并运用数值模拟软件GMS进行求解,根据不同工况给出不同的治理方案。油污泄漏是地下水水质问题,研究区监测井一旦监测到污染物,采取处理方式是将已污染水抽出处理,其原理即抽取已污染的地下水至地表污水处理池进行处理再排放,通过不断抽取地下水污染物,使得地下水中的污染羽面积减少和污染物溶度降低,并使含水层介质中的污染物通过随地下水运移而去除。在本文中运用嵌入法创建以总抽水量最小为目标函数的管理模型,以此来管理研究区地下水不受污染。本文总结前人资料详细分析现有资料,整理钻孔资料得出研究区有2层岩溶含水层。分析研究区水文地质条件,建立水文地质概念模型,运用GMS对研究区地下水系统进行了数值模拟,建立了相应地下水流场模型,研究区地下水总体向西北青龙哨方向径流。在水流模型的基础上,分析孔组抽水试验数据,得出约束条件、变量实验值,通过建立数学模型,再运用嵌入法把数学模型与数值模型中的水流模型及其溶质运移耦合,建立研究区地下水系统含水层管理模型,求解数学优化模型的可行解即应急处置井的抽水量,综合分析各方案治理效率及其约束条件得出最优的管理方案。对比两种工况下不同治理方案的处理效果,工况一选取3个应急井以500m~3/d抽水,工况二选取的是5个应急处置井以400 m~3/d抽水作为研究区的地下水的石油污染治理方案。
[Abstract]:Anning City is an important grain producing area and industrial area in Yunnan Province. Groundwater is the main drinking water source and industrial water source in the city. With the rapid development of economy in southwest China, oil consumption is increasing day by day. In order to reduce transportation costs and promote economic development in the southwest, the Anning Refinery, located in the southern part of the city, was built during the processing of oil. Once leakage occurs in the key seepage prevention area of the plant, it is easy to cause pollution to the groundwater environment, which constitutes the potential pollution source of the groundwater environment. In order to ensure that the spring spot and the groundwater exploitation well of Caopu town in Anning City are not polluted. It is necessary to grasp the pollution control situation of groundwater around the factory area timely and accurately, and to establish the pollution prevention monitoring and emergency treatment system in the plant area. Therefore, the potential environmental pollution problem in the research area is based on operational research. Combined with the numerical simulation software GMS, the research area management model is established. The groundwater flow and pollution transport process are simulated by modeling a given aquifer system on MODFLOW and MT3DMS models, and then the verified simulation model is coupled with the optimized model. Using the numerical simulation software GMS to solve the problem, according to different working conditions to give different treatment plans. Oil spill is a problem of groundwater quality, once the monitoring well monitored pollutants in the study area. The principle of the treatment is to extract the polluted groundwater to the surface sewage treatment tank for treatment and discharge, and through the continuous extraction of groundwater pollutants. The pollution plume area in groundwater is reduced and the solubility of pollutants is reduced. In this paper, the embedding method is used to establish a management model with the minimum total pumping volume as the objective function. In order to manage the groundwater in the study area without pollution, this paper summarizes the previous data and analyzes the existing data in detail, and draws the conclusion that there are two karst aquifers in the study area, and the hydrogeological conditions of the study area are analyzed. The concept model of hydrogeology is established, and the groundwater system in the study area is numerically simulated by GMS, and the corresponding groundwater flow field model is established. On the basis of the flow model, the pumping test data of the hole group are analyzed, the constraint conditions and the experimental values of variables are obtained, and the mathematical model is established. Then the model of groundwater system aquifer management in the study area is established by coupling the mathematical model with the numerical model and its solute transport. The feasible solution of the mathematical optimization model is the pumping capacity of the emergency disposal well. The optimal management scheme is obtained by synthetically analyzing the treatment efficiency of each scheme and its constraint conditions. The treatment effects of different treatment schemes under two working conditions are compared. The first condition selects three emergency wells to pump water at 500 mm3 / d, and the second condition selects five emergency disposal wells for oil pollution treatment of groundwater in the study area with 400 mm3 / d pumping water.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X523;X742

【相似文献】