Analysis of the State of the Municipal Solid Waste Landfill in Ivano-Frankivsk, Ukraine, the Composition of the Leachate, and Promising Technologies for its Treatment

The characteristics of the hydrogeology of the municipal solid waste landfill in Ivano-Frankivsk are given. Accumulation of waste in landfills causes environmental problems due to pollution of the atmosphere, water resources, and soil. It was established that there is practically no contamination of the water horizon with infiltrate. Commissioning of the leachate pipeline, which feeds part of the leachate to the city's treatment facilities, solves the problem of the accumulation of leachate at the landfill, however, creates an additional burden on these facilities. The composition of the infiltrate was analyzed. It was confirmed that the main harmful pollutants of infiltrates are oil products, nitrogen -containing compounds, dyes, humic compounds, and heavy metals. The main methods of cleaning of infiltrates abroad and in Ukraine are characterized. Based on the analysis of the available impurities, for the purification of the infiltrate, it is proposed to use the technology of physical -electrochemical wastewater treatment, which includes their treatment in electrocoagulators and the separation of coagulated impurities in a thin -layer settling tank. Our studies showed that during infiltrate purification up to normative indicators of its discharge to treatment plants are not reached and it is worth using additional treatment of the infiltrate with oxidizers. As a result of exploratory studies, it is proposed to carry out additional treatment with hypochlorite ions, which can be obtained during the electrolysis of the infiltrate on an inert anode. Cleaning the infiltrate using the described technology will reduce environmental pollution, which means increasing the level of environmental safety of the solid waste landfill.