METHOD FOR CLEANING GROUND WATER FROM IRON AND OTHER IMPURITIES Russian patent published in 1999 - IPC

FIELD: domestic water supply systems. SUBSTANCE: filter bed is divided into three parts. Mechanical suspensions, iron, and other impurities are separated in first part. Then water-air mixture is exposed to vibrations and fed to second part of filter bed wherein iron and other metals are oxidized to insoluble phase. Third part of bed that functions as fine filter holds insoluble oxides. EFFECT: improved service life and efficiency of plants, augmented oxidation and cleaning process. 2 cl, 1 ex