PLANT FOR PURIFYING UNDERGROUND AND SEWAGE WATER Russian patent published in 2008 - IPC C02F1/00 C02F1/74 

FIELD: chemistry.

SUBSTANCE: plant consists of working valves 1 - 8, 11,12, valve-sample collection tap 9, pressure filter 15 with a heavy load, filtering load 22, holding tank 16, pressure holding pump 17, pressure valve for releasing air 13, and a supply pipe 25, which is an ascending arm at the same time, providing for an air gap in the holding tank 16. Injector 24 with a calibrated opening for water aeration and reverse valve 18 for air intake, are fitted on filter 15, between the upper and lower flanges of which are fitted with piezometer 14 for controlling complete filling of the filter with initial water. Electromagnetic valve 19 is inserted into the plat in the working network, for regulating operation for which automated control system 10 is connected to the electrodes of capacitor 16. Pressure regulator 20 for maintaining constant rate of filtration is fitted in front of electromagnetic valve 19.

EFFECT: provision for uninterrupted purification of water with high rate of filtration without use of chemical ingredients; elimination of the possibility of mixing purified water with initial water and simplification of the construction.

3 cl, 1 dwg