Filter unit, membrane reactor, column reactor and manufacturing method thereof

The invention discloses a filter unit, a membrane reactor, a column reactor and a manufacturing method thereof. The filter unit comprises filter membrane components and an aeration component, whereinthe filter membrane components are internally provided with water collecting channels; the number of the filter membrane components is many, the filter membrane components are arranged around the aeration component or arranged at two sides of the aeration component; the aeration component is internally provided with an air inflation channel, the aeration component is an inflatable elastic component, the aeration component is provided with multiple deformable ports, the aeration has a conventional state and an inflated state, in the conventional state, the deformable ports are closed, in the inflated state, the aeration component inflates, the deformable ports are opened. According to the filter unit, when the inflation channel in the aeration component is inflated, the deformable ports areopened, air enters sewage through the deformable ports from the inflation channel to brush the filter membrane component, when the inflation in the inflation channel is stopped, the filter membrane component returns to the conventional state, and the deformable ports are closed again, so that the sewage can be prevented from entering the inflation channel and blocking the inflation channel without inflating the inflation channel all the time.