Numerical simulation of filtration water migration from a solid municipal waste dispossal site through ground protective structures
DOI:
https://doi.org/10.7242/1999-6691/2024.17.2.14Keywords:
municipal solid waste (MSW) landfill, filtration processes, numerical modeling, three-dimensional modelingAbstract
The paper studies numerically he processes of pollutant migration from the municipal solid waste (MSW) landfill and discusses the obtained results. Pollution of the natural environment with residues of substances and products resulting from the human household and industrial activities is one of the most urgent problems both in Russia and all over the world. In economically developed countries, in which waste management strategies are implemented to minimize garbage accumulation, priority is given to neutralization and recycling technologies, The beneficial effect of such strategy is a significant reduction of the waste volume. In Russia, despite the positive dynamics in the use of new waste management technologies, the main method of their treatment is disposal at MSW landfills. On the territory of Russia, along with the MSW landfills operated and built in accordance with environmental requirements, there are a large number of unauthorized landfills, which are of serious hazard to the environment. This raises the question of assessing the impact of such facilities on the environment. To study the characteristics of the pollutant distribution and determine the waste migration parameters, the archival data from a set of field and laboratory studies in the area of the existing MSW disposal site were used. A numerical model was constructed to describe the hydrodynamics of the migration of substances in the soil and soil layer forming the base of a solid waste disposal facility. The process of pollutant spreading is described in terms of dry residue. The model takes into account such factors as convective transport, diffusion and geological composition of the base of the waste disposal site, which have a significant impact on the pollutant migration.
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