Sewage treatment device with sludge reduction and phosphorus resource recovery characteristics

The utility model discloses a sewage treatment device with sludge reduction and phosphorus resource recovery characteristics. The sewage treatment device comprises a sequencing batch reactor, an anaerobic reactor, a micro-aerobic reactor and a phosphorus recovery pool, the sequencing batch reactor, the anaerobic reactor and the micro-aerobic reactor are sequentially connected in the sludge flowing direction to form a loop, and the sludge outlet end of the micro-aerobic reactor is connected and communicated with the sludge inlet end of the sequencing batch reactor; the upper part of the anaerobic reactor is communicated with the input end of the phosphorus recovery tank, and the output end of the phosphorus recovery tank is communicated with the sludge inlet end of the sequencing batch reactor; therefore, the scheme can adapt to low-carbon sewage, strengthen the nitrogen and phosphorus removal effect, strengthen the sludge source reduction effect, realize phosphorus resource recovery and practically solve the