Automatic off-line gas-water combined-washing membrane bioreactor (MBR)

An automatic off-line gas-water combined-washing membrane bioreactor (MBR) comprising:

• a PLC automation control cabinet,
• a MBR reactor,
• a MBR membrane assembly arranged in the MBR reactor, and
• a rotating hood arranged at the top of the MBR reactor,
• wherein,
• an annular guide rail is arranged at the top of the MBR reactor, with the rotating hood rotatably arranged on the annular guide rail,
• a lifting device capable of lifting the MBR membrane assembly to elevate it to the inside of the rotating hood is arranged above the MBR reactor,
• a washing pipe network is arranged on an inner wall of the rotating hood, which is provided with an external interface at an outer side of the rotating hood,
• the external interface is connected with a gas washing pipe and a water washing pipe by a three-way change valve,
• the gas washing pipe is externally connected with a gas pump, and the water washing pipe is externally connected with a water pump,
• the three-way change valve is a magnetic exchange valve,
• the gas pump, the water pump and the three-way change valve are all connected with the PLC automation control cabinet,
• the washing pipe network is provided with several nozzles obliquely pointing to the inside of the rotating hood, and
• the nozzles can produce a reactive thrust to drive the rotating hood to rotate along the annular guide rail when ejecting gas or water.