HYDROPNEUMATIC AERATOR WITH FLAT-JET AERATING PLUME Russian patent published in 2014 - IPC B03D1/14 C02F7/00 C02F3/18 

FIELD: process engineering.

SUBSTANCE: invention relates to biological purification of effluents and can be used for aeration in aeration tanks and in flotation cleaning, dressing of minerals, particularly, in pulp aeration devices. Aerator comprises housing, inner web, nozzle to be fitted in said web and provided with aligned spaced apart rectangular cross-section channels to feed fluid and to discharge gas-fluid plume, air feed pipe and fluid discharge pipe. Nozzle inlet channel height-to-width, a:d, varies from 1.5:12 to 6:12. It features similar magnitude of outlet channel height-to-width ratio, b:d. Inlet channel length-to-height, L:h, ratio varies from 22:1.5 to 22:6, similarly, varies the L:b ratio. Air gap length-to-channel total length ratio, l:H, makes 16:60.

EFFECT: higher oxidation capacity, lower power consumption per unit air volume, higher saturation with air oxygen.

2 dwg, 1 tbl