Wastewater ammonia nitrogen removal system with adjustable pressure

The invention discloses a pressure-adjustable wastewater ammonia nitrogen removal system which comprises a first dosing pipeline mixer, a water inlet is communicated with a water inlet header pipe through a liquid conveying pipe with a first valve and a water inlet pump, and a water outlet is communicated with a first conveying pipe provided with a first pH online detector. Two partition plates are arranged in the box body in the longitudinal direction and used for dividing the box body into a positive pressure area, a negative pressure area and an air stripping area in sequence. The positive pressure area water inlet is communicated with the first conveying pipe, and the top air outlet is connected with a first exhaust pipe with a second valve; a top water inlet of the negative pressure area is communicated with the positive pressure area through a second conveying pipe with a third valve, and the top is communicated with an air exhaust mechanism; a water inlet of the air stripping area is communicated with