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Waste treatment is considered one of the critical environmental issues. Waste should be understood not only as a source of pollution but as a raw material. Nevertheless, we need well-sorted waste for recovery. Separate collection of municipal waste is an activity in which components of municipal waste are separated. It is based on the conscious activity of citizens, who primarily sort the relevant raw materials. At present, the citizen is obliged to sort waste by law in Slovakia, and the municipality is obliged to create conditions for separation by a suitable system. By obtaining current data, it will be possible to anticipate the development of waste management and propose modifications so that as much waste as possible is separated. This paper is focused on the analysis of the development of selected types of municipal waste, for analysis was selected locality in Slovakia with different types of urbanization. Specifically, we will focus on plastics, paper, metals, and glass. By comparing the obtained data, we will determine the scheme of the probability of waste development for the following years. The obtained data will also serve to analyze further the waste management framework in Slovakia and the world. [ABSTRACT FROM AUTHOR]

In over 38 percent of the groundwater drinking water sources in Slovakia, iron and manganese concentrations exceed the recommended levels set by Regulation of the Slovak Republic No. 247/2017 on Drinking Water [1]. Iron and manganese are not considered health hazards, although micro-environments may be supported in wells and distribution systems which harbor microorganisms. The main concern with these metals is the turbidity and color imparted by the oxidized forms that rarely goes unnoticed by the consumer [2]. The objective of the study was to compare removal of dissolved iron and manganese from water by using the natural zeolite - clinoptilolite mined in the territory of Slovakia with imported filtration material - Birm. Obtained results from experiments carried out in the groundwater in locality Kolárovo and Čičov indicate that Klinopur-Mn can be used for removal of iron and manganese in water treatment process (contact manganese removal). This material is comparable with imported Birm. [ABSTRACT FROM AUTHOR]