Amine liquid degradation product harmless treatment device

The utility model discloses a harmless treatment device for amine liquid degradation products. The harmless treatment device comprises an evaporative crystallization part and a photosynthetic bacteria decomposition part, the evaporative crystallization part comprises an evaporative crystallizer; the photosynthetic bacteria decomposition part comprises a decomposition tank and a light source, photosynthetic bacteria are filled in the decomposition tank with a closed structure, the decomposition tank is provided with a crystalline amine liquid input port, a finished liquid output port and an exhaust port, the crystalline amine liquid input port is connected with a crystalline amine liquid output pipeline of the evaporative crystallization part, and the finished liquid output pipeline is connected with a finished liquid output pipeline of the evaporative crystallization part. The finished liquid output port is connected with the finished liquid output pipeline, the exhaust port located at the top of the decompos