AERATION SYSTEM Russian patent published in 2003 - IPC

FIELD: biological treatment of sewage water; applicable in saturation of liquids with gases, for instance, in saturation of sludge mixture with oxygen. SUBSTANCE: aeration system has aerator with air duct or many aerators with many successively communicated air duct section. For local protection of aerator or many sections from hydrophenumatic impacts installed inside air duct or its part, or inside the first and/or the last section of air duct or its part, or in each of many sections of air duct where removable air damper is arranged along their axes. EFFECT: provided local protection of aerator or many sections from hydropneumatic impacts due to installation of air damper inside air duct. 5 cl, 28 dwg