Patent ID: 6090277
Filing Date: 2000-07-18
Classification: C02F,Y02W,Y10S

Abstract:
A reactor for the depuration of polluted waste waters which comprises: a) a tank (1, 100) into which the polluted waste waters are input and depurated, within said tank there are a number of cavitation oxygenizers (5, 6, 11) fed by pressurized re-circulated water (7) and set horizontally on at least one plane (4) close to the bottom of the tank, these oxygenizers being made up of first oxygenizers (5) that expel water and atmospheric air and second oxygenizers (6) that expel water and air plus sludge and foam sucked in in the higher region of the tank, both these numbers of oxygenizers (5,6) being set so as to cause a first turbulent motion (F1, F2) sensibly parallel to the lateral walls of the tank (1, 100), and a second turbulent motion (F3, F4) along the vertical planes of the tank in such a way as to cause the global circulation of the liquid in the tank and the formation of three zones, a first upper zone into which the air is transferred along with the sludge and foam, a second intermediate zone in which the reaction and flotation takes place and a third one, lower than said plane (4) in which the depurated water gathers; b) a pump (8) that sucks the depurated water into a region (9) in the third zone in order to return it into said second zone and at least one pipe (T4) with the lower end opening into the same said region (9) and with the upper end opening within the second zone so as to cause a first part circulation of liquid biomass within said second zone.