FIELD: chemistry, water purification.
SUBSTANCE: invention refers to biological sewage treatment with activated sludge, and is applied as local treatment facilities in cottages, detached buildings or groups of buildings, drive-up public catering establishments. Invention concerns biological sewage treatment system containing integrated units: sewage receiver, aeration tank, secondary sedimentation tank, sludge regenerator. In addition the system is supplied with denitrifier partitioned from aeration tank and accommodating sewage receiver. This design of the system including is equipped sewage receiver enables to localise sewage denitrification over space and time that makes its continuous, that is effective, and adheres to one place that is important for existence, functioning and reproduction of microorganism community of activated sludge providing denitrification.
EFFECT: higher process efficiency.
2 dwg
