FIELD: aeration systems in sewage purification; technologies of sewage purification.
SUBSTANCE: the invention is pertaining to technologies of sewage purification and may be used for biological purification of sewage at sewage treatment plants of municipal economy. The aeration system in the aerotank includes at least two zones located over the corresponding sections of the aerotank bottom, one of the zones is a zone of nitrification, and the other is a zone of denitrification. In the zone of nitrification are located pneumatic aerators gathered in the corresponding modules and placed in a benthic part of the corresponding section of the bottom of the aeration tank. At least in each zone there is a group of aerators formed from the pneumatic aerators. The group of aerators located in the zone of nitrification is formed from the porous tubular aerators, and the group of aerators located in the zone of denitrification is formed from the perforated tubular aerators. At that within the limits of each of the mentioned groups the aerators gathered in the aerating modules and are located in the corresponding benthic parts of the aeration tank with a capability of formation in it of a broad strip of aeration. The technical result is an increase of intensity of the sewage purification with an increase of the speed of the biological purification process.
EFFECT: the invention ensures an increased intensity of the sewage purification and increased speed of the biological purification process.
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