SAFETY BARRIERS AND THEIR USE IN DESIGN OF MUNICIPAL SOLID WASTE LANDFILLS

The article discusses the conceptual framework and the possibility of using safety barriers in the design of MSW landfills. Their existing classifications are evaluated, as well as the experience of their application at present. The article presents the safety concept based on a systematic description of various types of barriers (multibarriers) using the example of barriers for MSW landfills. The international experience in using safety barriers, as well as their application in the design of MSW landfills in Russia, is considered. It is proposed to use on a wide scale the doctrine of geochemical barriers, which is an achievement of the Russian science. Options are considered for creating artificial geochemical barriers that have proven to be effective in neutralizing hazardous waste from the metallurgical and mining industries, allowing us to increase the effectiveness of geoenvironment protection and to reduce the cost of arranging landfills. A schematic diagram of the expected hazard assessment method, the so-called “bow tie” method is presented and the possibility of its application for assessing the risks of environmental impact on the landfill and the landfill on the geological environment is considered.