SISTEM ZA PREČIŠĆAVANJE PIJAĆE VODE SA POVEĆANOM TVRDOĆOM I KONCENTRACIJOM AMONIJAKA, GVOŽĐA, MANGANA 

Water is one of the most important universal solvents for gerat number of substances. Despite the fact that it is found in nature in huge quantities, there is almost no completely clean water in nature. The purest water in the nature is in glaciers, snow and possibly rainwater, although this water contains also a certain amount of impurities. Water in natural springs (underground and surface springs) is more or less loaded with minerals that can be non-toxic or very toxic. In order to use it as drinking water, it is necessary that such water (chemically and bacteriologically) be in accordance with the standards and Guidance which defines the maximum allowed concentrations of certain mineral compounds and bacteria in drinking water.