Groundwater Pollution Prevention And Control Management Model In The Western Karst Area Of ??Yunnan Anning Refinery

Anning City is an important grain-producing area and industrial area in Yunnan Province,and groundwater is the city's main source of drinking water and industrial water.With the rapid development of the economy in southwest China,oil consumption is growing.In order to reduce transportation costs,and promote economic development in southwest region,therefore built the Anning oil refinery.The refinery is located in the south of the city.In the process of oil processing,the site of the key anti-seepage area in the event of leakage easily on the groundwater environment pollution,constitute a significant potential for the groundwater environment.In order to ensure the Caopu town of Anning City's springs and groundwater exploitation wells from pollution,timely and accurate grasp of the surrounding area of groundwater pollution control situation,the establishment of plant pollution prevention and emergency treatment system is very necessary.Therefore,based on the operational research of the research area,the potential environmental pollution problem is established.The model of the research area is established by the numerical simulation software GMS.The groundwater flow and the pollution transportation are simulated by modeling the given aquifer system on the MODFLOW and MT3DMS models process.Then the simulation model is coupled with the optimization model,and the numerical simulation software GMS is used to solve the problem.According to different working conditions,different treatment schemes are given.Oil spill is the groundwater quality problem.Once the pollutants are monitored by the monitoring wells in research area,the treatment is to take the contaminated water extraction treatment.And the principle which removes contaminated groundwater to the surface of the sewage treatment tank for re-discharge,through continuous extraction of groundwater Contaminants that reduce the amount of contaminated plumage in groundwater and reduce the solubility of contaminants and remove contaminants from the aquifer media by migration with groundwater.In this article,we use the embedded method to create a management model with the minimum total pumping capacity as the objective function,so as to manage the groundwater in research area from pollution.This article summarizes the previous detailed date to analyze the existing data,finishing the drilling data obtained research area has two layers of karst aquifers.The hydrogeological conditions of the research area were analyzed,the concept of hydrogeological geology was established.GMS was used to simulate the groundwater system in research area,and the corresponding groundwater flow field model was established,and the corresponding groundwater in research area was simulated.The groundwater flow in research area was simulated.On the basis of the water flow model,the data of the pumping test of the hole group is analyzed,and the constraint condition and the experimental value of the variable are obtained.Through the establishment of mathematical model,the mathematical model is coupled with the water flow model and its solute transport in the numerical model in research area,the aquifer management model of groundwater system is studied,the feasible solution of the mathematical optimization model is solved,and the pumping capacity of the emergency treatment wells is analyzed.The optimal management scheme is obtained by comprehensive analysis of the efficiency of each scheme and its constraints.Compared with the treatment effect of different treatment schemes under the two conditions,three emergency wells were selected to pump 500m ~3/d,another five emergency wells were selected with 400 m~3/d pumping as the groundwater of the research area Oil pollution control program.