The first stage of treatment is coagulation, which is the process of solidifying suspended solids in water. To do this, special chemical compounds are added to the water to cause the pollutant particles to clump together. The water is then discharged into tanks where the pollutants sink to the bottom.<\/p>\n\n\n\n The next stage of treatment is filtration. The water flows through layers of sand, gravel and other materials that trap the remaining contaminants.<\/p>\n\n\n\n The water is then disinfected to eliminate bacteria and other pathogenic microorganisms. Chlorine or ozone is usually used for disinfection.<\/p>\n\n\n\n The final stage of purification is treatment, i.e. the addition of suitable chemical compounds to the water to improve its taste, odour and physicochemical properties.<\/p>\n\n\n\n The film ends with a scene showing a Warsaw resident opening the water tap. The water is clean and fresh, ready to drink.<\/p>\n\n\n\n A promotional video for the Municipal Water and Sewerage Company in Warsaw may also contain additional information about the water treatment processes. For example, it can explain how the various equipment and installations at the treatment plant work. It can also present figures on the volume of water supplied to the city's residents and the quality of the water that is supplied.<\/p>\n\n\n\n![\"promotional](\"https:\/\/www.produkcja-filmowa.pl\/wp-content\/uploads\/2024\/03\/PP_02-2.jpg\")
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