Microbial sewage treatment system and sewage treatment method

The invention discloses a microbial sewage treatment system and a sewage treatment method. The system includes a microbial combination tank, an aeration system, a sludge collection system, a sludge transportation system and a recovery system. The recovery system includes a regeneration recovery tank, which is divided into an upper part and a lower part by an electromagnetic disk, a filter materialis installed at the upper part for phosphorus recovery, and an aeration device and a magnetic powder recovery mechanism are installed at the lower part to recover magnetic powder. The sludge collection system realizes the collection of magnetic activated sludge, and the sludge transportation system realizes reflux transportation of magnetic activated sludge outside the tank. The system adopts themagnetic field induced HAP crystallization method to enhance phosphorus removal, and utilizes the dual purposes of the magnetic field to realize simultaneous recovery of phosphorus and magnetic powder. While an original sewag