| In order to ensure the normal development of ecological environment,the main function of the study on groundwater migration simulation and monitoring is to unify the treatment of groundwater resources in order to ensure the normal development of ecological environment.At present,due to the leakage of the enterprise sewage pit into the aquifer,the groundwater is seriously polluted,which has caused great and far-reaching negative effects on human life and production practice.Therefore,the construction of groundwater monitoring system in accordance with the specific situation of our country is of great significance for improving the environment,establishing a sustainable development society and maintaining the high-speed development of our country's economy.Firstly,the movement and migration of groundwater in polluted area are studied.It is found that the seepage velocity of groundwater is applicable to Darcy's law.Therefore,the mathematical model and the simulation of solute migration are established.For complex underground polluted aquifers,well groups are set up and simulated by Kingview software,control system is established,good man-machine interface is set up,and groundwater quality is monitored in real time.If a certain water quality parameter is beyond the index range,Then the polluted water is extracted to the surface,and the extraction treatment and remediation technique(Pt)is used in this process.The changes of water quality parameters before and after can be compared and analyzed by real-time curves.Pass by If the extracted groundwater still fails to meet the discharge standard,it needs to be treated in the next step,and the reverse osmosis system is used in this treatment.First,reverse osmosis pretreatment ultrafiltration,then reverse osmosis.Reverse osmosis consists of two stages,because the groundwater treated in this paper is basically up to the standard of water quality parameters after extraction treatment,but a few parameters are still too high,so it is only necessary to carry out primary reverse osmosis treatment.The osmotic fluid enters the regulating pool through the collecting well,and the osmotic fluid in the regulating pool is pumped into the raw water tank through floating lifting pump.After adjusting the pH value by concentrated sulfuric acid,the raw water in the raw water tank is first separated into the first stage membrane group after pressurization by the primary booster pump,and a first stage membrane group is formed after separation.Stage water and first-level concentrated water,in which the first-level concentrated water is discharged directly to the enrichment tank,and then returned to the landfill after the reservoir is filled,and this process is over.The real-time curve generated by the control system can be compared with the previous processing results.The simulation results show that according to the simulated groundwater conditions,the technical effect of extraction treatment is remarkable,the parameters of each parameter are basically up to the standard,and a few of them are still on the high side.The treatment process is simple and economical,easy to operate,and can prevent and control groundwater,but there are still some deficiencies.The insoluble solute can not be extracted,and the solute in the water can not be treated in an all-round way.The designed control system needs to invest a lot of costs,the later monitoring and regular maintenance cost is large,extraction and recharge also have a certain interference to the repair area.The simulation process through reverse osmosis system is convenient in operation,low in energy consumption and high in effluent quality,but this process needs to be carried out.High pressure equipment,membrane group needs to be cleaned regularly.Through research,the technology and method used in this paper can improve the efficiency of the system,at the same time,it can guarantee the scientific rationality of monitoring,and finally make the treated groundwater quality meet the discharge standard. |
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