PLANT FOR PURIFICATION OF WATER FROM FERRUM AND MANGANESE Russian patent published in 1999 - IPC

FIELD: treatment of subsurface water used for water supply systems. SUBSTANCE: plant includes pavilion and surface casing of water well, aeration unit and circular reservoir having upper chamber where flushing device is arranged, center chamber for filter medium and lower chamber for purified water. Circular reservoir is mounted in pavilion of water well together with aeration unit and is brought in communication with surface casing through solenoid valve in the course of flushing. Solenoid valve is fitted above surface casing in hollow section of circular reservoir. Aeration unit is provided with radial ports and check valve fitted under radial ports. EFFECT: reduction of expenses for purification of subsurface water. 5 cl, 2 dwg