FIELD: technological process.
SUBSTANCE: invention may be realised in operation of different treatment plants and in operation of small household sewage water treatment plants. Method of biological treatment of sewage water by means of active sludge in suspended condition includes supply of sewage water in activation reservoir with simultaneous supply of air in the same reservoir. Temperature of air that is supplied to activation reservoir is measured depending on ambient air temperature. If ambient air temperature is positive, air supplied to activation reservoir is cooled down to at least temperature equal to temperature of sewage water, and in case of negative temperature of ambient air, air that is supplied to activation reservoir is heated up to the temperature that is at least equal to temperature of sewage water.
EFFECT: simplification of sewage water treatment method and reduction of economical expenses for its implementation with increase of extent of sewage water treatment.
7 cl, 1 dwg
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