Introduction: One of the products of municipal and other waste landfills is landfill leachate. Proper handling with it is extremely important for the environment, while at the same time it represents a large part of the operator's costs. Purpose: We wanted to present a set of potentially useful technologies that have already been sufficiently researched to be applicative on the leachate of the selected landfill. At the same time, we wanted to present a cost estimate that is a comparison of technologies already in use on the selected landfill, the technologies that could be used, and the technologies used in similar landfills. Methods: The main focus was put on the treatment of leachate before the release into the environment, therefore, on the cleaning technology. Based on the leachate monitoring data of the selected landfill site and among the range of potentially useful technologies, we tried to find technology or rather a group of compatible technologies that could be used at the selected landfill site for non-hazardous municipal waste. At the same time, we also wanted to examine the effects of the treatment of mixed municipal waste on the leachate. Results: When reviewing the monitoring of landfill leachate in the period from 2007 to 2016 (10 years) it was found that individually there are parameters that do not meet the requirements of the legislation, and at the same time these parameters cause a threat of greater importance and could affect the functioning of the potentially selected technologies. The most commonly exceeded parameters observed are chromium (eight times over the ten-year period) and the individual parameters of sulphide, nickel and the total amount of detergents. It is not possible to speak about the impact of the treatment of mixed municipal waste, since the period of disposal of this type of waste is too short to show the effects on the leachate in the context of the monitorings that are still being implemented. Discussion and conclusion: Current technologies that are potentially useful in the field of waste water treatment, specifically in the field of leachate management, do not offer an independent, comprehensive solution. We offered few technologies or their combination that could be appropriate to use on chosen landfill. We chose recirculation or reverse osmosis combined with physical - chemical technologies.
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