Simulation system for monitoring and analyzing dynamic releasing of pollutants in soil filling materials under leaching state

Abstract

The invention discloses a simulation system for monitoring and analyzing the dynamic releasing of pollutants in soil filling materials under a leaching state. The simulation system consists of eight subsystems, including a sample container external subsystem, a sample container internal subsystem, a high-pressure air supply subsystem, a leaching liquid pH (Potential of Hydrogen) value regulation and control subsystem, a water and air feeding pipeline subsystem, a sensor circuit subsystem, a computer control terminal subsystem and a leaching liquid organic matter separation subsystem, wherein amonitoring and analysis system is characterized in that the high-pressure air supply subsystem and the leaching liquid pH value regulation and control subsystem provide certain pressure gas and leaching liquid with a certain pH value for the sample container internal subsystem through the water and air feeding pipeline subsystem; pressure in the sample container internal subsystem, heavy metal pollutant concentration in the leaching liquid and the pH value signal of the leaching liquid are independently transmitted to the computer control terminal subsystem through the sensor circuit subsystem; and meanwhile, after parts of leaching liquid are separated and purified through the leaching liquid organic matter separation subsystem, organic matter analysis is further carried out, and therefore, the dynamic real-time monitoring and analysis of heavy metal pollutant and organic pollutant releasing in solid wastes can be realized. The system has the advantages of being convenient in operation, high in intelligentizing, good in dynamic leaching simulation effect and high in accuracy.

Description

technical field [0001] The invention belongs to the technical field of monitoring and analyzing reconstructed soil pollutants, and in particular relates to a simulation system for monitoring and analyzing the dynamic release of pollutants in soil fillings in a leaching state. Background technique [0002] Coal gangue is a rock with low carbon content and higher hardness than coal associated with the formation of coal. The carbon content is generally 20-30%, and the fracture is brown. Some also contain a small amount of coal. The calorific value is average It can reach 1000-3000 kcal / kg, and it mainly comes from the process of coal mining and washing. In recent years, with the strengthening of mechanization in the coal mining process and the increase in the proportion of coal washing, my country has become one of the countries with the largest cumulative stockpiles and annual emissions of coal gangue in the world. However, the current utilization rate of coal gangue in my co...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the existing laboratory simulation device in the research process of filling and reconstruction of soil pollutant migration law, when the actual depth of landfill is relatively deep, then the simulation device cannot simulate the corresponding soil column height, and the simulation device The coupled temperature

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