Nitric oxide tail gas treatment device

The utility model provides a nitric oxide tail gas treatment device which is good in treatment effect and convenient for resource recycling, and relates to the technical field of nitric oxide tail gas treatment. The nitric oxide tail gas treatment device comprises a mixing tank, a water absorption device and an alkali absorption device, the mixing tank is provided with a tail gas inlet, an oxygen inlet and a mixed gas outlet; the water absorption device comprises a plurality of water absorption towers, the plurality of water absorption towers are sequentially connected with the air inlet of the water absorption tower at the next stage through the tower top air outlet of the water absorption tower at the previous stage to form a multi-stage absorption structure, and the alkali absorption device comprises a plurality of alkali absorption towers; the plurality of alkali absorption towers are sequentially connected with the air inlets of the alkali absorption towers at the next stage through the tower top air out