Installation for purification of inland surface waters from nitrate nitrogen

Abstract

The application concerns an installation for purifying inland surface waters from nitrate nitrogen and phosphate phosphorus, characterized in that it comprises at least one mechanical filter consisting of at least a coarse impurity filter (1) and a column with a sand-gravel and / or zeolite bed (7), between which a feed pump (4) with a set of valves (3, 5) is installed, and comprising two ion exchange filtration columns (9) with an ion exchange resin bed, connected in a twin configuration and supplied with a reagent from at least one reagent storage tank (8).