PURIFYING METHOD FOR GROUND WATER CONSISTING IN ELIMINATION OF FERRUM AND MANGANESE AND SMALL-SCALE INSTALLATION FOR ITS IMPLEMENTATION Russian patent published in 2012 - IPC C02F1/64 C02F1/74 C02F101/20 C02F103/06 

FIELD: water purification.

SUBSTANCE: invention refers to reactant purification of the ground waters with rich in ferrum and manganese and can be used for water supply in small settlements, recreation facilities, country houses, country estates and farms. The suggested method includes aeration of the initial water with its further alkalizing. These processes progress in the aeration tank that incorporates an aeration device, a mixer, and a contact area. In order to intensify mixing of the chemical agent with water, the compressed air from the compressor is fed into the aeration tank. For the sake of additional oxidation sodium hypochlorite is introduced providing the necessary contact time and further extraction of the ferrous and ferric iron and manganese compounds by filtering by means of two-ply loading. The suggested small-scale installation contains a coarse mesh filter 1, an aeration tank 3, a compressor 6, a dosing unit for the alkalizing chemical agent 2, a booster pump 7, a dosing unit for the oxygen carrier 8, a forcing catalyst cage 9, a forcing deironing filter 10, a fine filter 11, a tank with clean water 12, the third stage pump 13, and certain valves.

EFFECT: removing of high ferrum (no more than 20 mg/l) and manganese (no more than 2.0 mg/l) concentrations from the ground water if there is hydrogen sulphide, carbon dioxide, a high oxidation characteristic in the water, in the low temperature conditions, in case of a low pH (no more than 6.5) and alkalescency (no more than 2+[Fe²⁺]/28).

2 cl, 1 dwg, 2 tbl, 2 ex