Forecasting the environmental effects of air pollution with landfill gas in residential areas

Abstract

In the article the prediction of ecological consequences of contamination of components of the landfill gas air to a residential building, located on the territory close to the landfill. A method for calculating the dispersion of landfill gas taking into account the influence of the building, based on the numerical solution of differential equations, heat transfer, Reynolds, exponential distribution, supplemented by corresponding models of turbulence, initial and boundary conditions. The technique allows to take into account the spatial heterogeneity of landfills and rolling pins as the source of the pollutant, as well as the process of penetration of polluted air into the interference. Performed software implementation and verification of the method on the example of the range “Novoselki” (Saint Petersburg) and the adjacent warehouse buildings and residential complex for the most unfavourable wind conditions taking into account the averaging over time. The ecological and toxicological analysis of landfill gas taking into account its main components, and also the analysis of carcinogenic and noncarcinogenic risk at chronic influence on the abstract person living in the room in which the air polluted by landfill gas penetrates is carried out. The results can be used to determine the amount of maximum permissible emissions of landfill gas components, the scale moat sanitary protection zones of landfills and dumps, detecting the identification of the most polluted places on the street and indoors, the health risk assessment of residents as a result of chronic action of toxic substances, the syndrome of “sick building” caused by penetration of contaminated air into the room through openings in the walling, the solution of applied problems of ecological safety of construction, housing and communal services and public health.