DENITRIFICATION FLOTATING PLANT Russian patent published in 2009 - IPC C02F3/12 C02F1/24 

FIELD: sewage treatment facilities.

SUBSTANCE: invention is related to devices for purification of household and industrial sewage waters. Denitrification flotating plant includes flotating settling tank equipped with hydrophobic nozzle in the form of capronic or lavsan fiber bristle brushes fixed in cassettes in the whole area of cross section of flotating settling tank vertically with pitch equal to diameter of bristle brushes, with height of cassettes of at least 1 m. Inlet of initial sewage water and utilities for inlet of recirculating sewage water are located above cassettes with bristle nozzle. Plant is equipped with detector of nitrates content in water installed in inlet pipeline of purified sewage water recirculation. Plant is equipped by solution tank of concentrated solution of nitrates and batcher of this solution that communicates to pipeline of purified sewage water recirculating flow inlet; under cassettes with bristle nozzle regeneration bubblers are installed, which communicated to system of air supply through magnet valve controlled by controller. Inside flotating settling tank there are nozzles for inlet of initial sewage water and recirculating flow of purified sewage water that are located tangentially to shell of flotating settling plant body.

EFFECT: reduction of power intensity, simplified operation, exclusion of foam product contamination by reagents.

2 cl, 1 dwg