INSTALLATION FOR BIOLOGICAL PURIFICATION OF SEWAGE Russian patent published in 2004 - IPC

FIELD: purification of sewage.

SUBSTANCE: the invention presents an installation for household and industrial sewage purification. The offered installation contains: some bodies made in the form of tanks including an equalizing tank with an aerating system; a primary sedimentation tank with a bin for accumulation of sludge equipped with an aerating system; an aeration tank divided by vertical partitions into stages provided with aeration systems and carrying agents of the attached microflora made in the form of the vertical flat screens; a secondary sedimentation tank with a bin for accumulation of sludge; an aerobic stabilizer with an aeration system and a module of bactericidal treatment of the purified water with an ultraviolet radiation. At that the lateral walls of all tanks are made convex, and the equalizing tank in its lower part additionally contains the carrying agents of the attached microflora of the ammonificating kind. In the upper part of the installation there is a launder type variable selector valve of a sewage, and the aeration system of the equalizing tank is connected through a solenoid valve. Besides the secondary settling tank additionally contains a device for its cleaning and prevention of withdrawal of the floatable particles of the sludge sediment including an aeration system, the floating particles collector and their withdrawal pipeline. The installation ensures an increase of stability and efficiency of sewage purification process.

EFFECT: the invention ensures an increase of stability and efficiency of sewage purification.

3 cl, 1 dwg