Integrated treatment device for low-carbon-nitrogen-ratio domestic sewage in villages and towns

The utility model discloses an integrated treatment device for low-carbon-nitrogen-ratio domestic sewage in villages and towns, which comprises a box body, and a first regulation denitrification tank, a second regulation denitrification tank, an anaerobic tank, a first anoxic tank, a second anoxic tank, a first aerobic tank, a second aerobic tank and a sedimentation tank are sequentially arranged in the box body at intervals, the first adjusting denitrification tank is provided with a water inlet, an outer reflux inlet and an inner reflux inlet, the second adjusting denitrification tank is provided with a lifting pump for lifting liquid into the anaerobic tank, and the second aerobic tank is provided with a denitrification liquid reflux pipe connected with the inner reflux inlet of the first adjusting denitrification tank; the sedimentation tank is provided with a sludge return pipe which is connected with an outer return port of the first adjusting denitrification tank. A regulating tank for regulating water