High-nitrogen digestive juice wastewater treatment system and treatment method

The invention discloses a high-nitrogen digestive juice wastewater treatment system and a high-nitrogen digestive juice wastewater treatment method, and relates to the technical field of biological treatment of high-nitrogen digestive juice wastewater. The device comprises a main bioreactor and an alkali liquor storage cylinder located on the left side of the main bioreactor; an auxiliary bioreactor is arranged on the right side of the main bioreactor, a sedimentation tank is arranged on the right side of the auxiliary bioreactor, air blowers are arranged right in front of the main bioreactor and the auxiliary bioreactor, and perforated aeration pipe frames are fixedly communicated with the rear parts of the air blowers; sludge pumps are arranged right behind the main bioreactor and the auxiliary bioreactor, a sewage pipeline I communicated with the main bioreactor and the auxiliary bioreactor is arranged between the main bioreactor and the auxiliary bioreactor, and a sewage pipeline II connected with the aux