Abstract: Biological treatment with the small-bubble aeration (air artificial supply) for oxidizing waste water components in a unit for integrated waste water biological treatment includes a reservoir with a waste water receiving chamber, an aerotank chamber, a secondary settling tank and an activated sludge stabilizer. The receiving chamber is communicated through an air-lift to the aerotank chamber and includes a primary filter and a device for blowing off the filter, float-type level guages and an air-lift for transferring waste water, an air-lift for transferring a grease film into the aerotank chamber. The receiving chamber, the aerotank chamber and the activated sludge sterilizer are provided with aerators. The aerotank chamber and the secondary settling tank is supplied from at least two compressors, the chamber of the activated sludge stabilizer is provided with an intermediate partition forming an additional chamber for stabilizing sludge.

Abstract: This invention relates to units combining biological treatment with the small-bubble aeration (air artificial supply) process for oxidizing waste water components. It is intended for integrated waste water biological treatment. The technical objective of the proposed invention is to develop and provide a unit for integrated waste water biological treatment, which has a simple in operation and compact design, high reliability, long service life and is environmentally safe. Also, this is the technical effect including high treatment quality of any volumes of waste water supplied to the unit, especially in cases of so-called volleys having peak volumes.