A 5,000 m3/day gravity deironing plant "Kristall B" produced by "Polymerconstruction", a Byelorussian manufacturer, was started up in Tula region.
The plant functions without any backwash pumps, its power is no more than 0.1 KW, and the cleaning water consumption is max. 1 % of the plant flow.
With the plant, iron and dissolved gas are removed without any chemicals, by simplified aeration and biological method. Iron bacteria catalyze the iron oxidation process and facilitate the formation of hard dissoluble iron (Fe3+) from dissoluble iron (Fe2+). Then the iron is removed by filtration.