Study On Environmental Risk Impact Of The Pipeline Transportation Process Of The Desulfurizer Rich And Poor Liquid

The content of H₂S in Marine Gas Field is 4.33%,the content of CO₂ in which is 5.44%,the organic sulfur content can reach 88²56 mg/m³,high content of acid gas;Marine Gas Fi eld area landform is mainly in western Sichuan plain,the region's population density is large t hat about 500⁹40 people per square Kilometer,the Gas Field from Chengdu is about 50 km,this Field is near to densely populated areas in western Sichuan natural gas gathering and desu lfurization technology put forward higher requirements,which determine the environmental i mpact of desulfurization agent once leaked by,including after the characteristics of high sulfu r content in desulfurizing agent and UDS agent of the rich and the poor fluid leakage effect on soil and the groundwater environment.In this study,we set up the possible accident types of pipeline transportation desulphurizer to study the environmental impact of the accident risk.The liquid leakage rate under the accident state is calculated,the maximum liquid leakage rate pipe is determined,and the independent design experiment device is used to simulate the leakage of the full pipe diameter of the desulphurizer poor and rich liquid pipeline,and the leakage situation is found after 15s and the pipe truncation valve of the leakage pipe section is closed.The degree and scope of environmental impact caused by the leaking of the rich and poor liquid of the desulfurizer to the soil and the ground water,and the environmental risk prevention and control measures for the pipeline transportation process are put forward according to the research conclusions.The results showed that:1.The desulfurizer wealth effect on soil fluid leakage is mainly manifested in the change of physicochemical properties of soil heavy metals in soil increased,the metal content of sulfur compounds,effect of soluble total salt content and soluble cation c ontent,heavy metals and promote Jin Shuyuan migration in soil;desulfurizer leakage on surfa ce soil?within 20cm?significantly affected the ability of desulfurization rich solution;effect o f soil is greater than that of lean solution.2.Desulfurization agent liquid has a little effect on t he groundwater leakage between the rich and the poor;3.Desulfurization agent leaked on Soi l and groundwater system in the influence of element migration mainly dual role of the outsid e world and precipitation on Soil and groundwater rich liquid,resulting in soil element migrat ion in groundwater,in this process,a large number of migration is not obvious.There are still elements in soil,soil internal migration is obvious,and the adsorption capacity of soil is stron ger.According to the conclusion,specific environmental risk prevention and control measures are put forward from the aspects of organization management and hardware facilities protection.