A/O-MBBR PROCESS-BASED INTEGRATED SEWAGE TREATMENT DEVICE AND SEWAGE TREATMENT METHOD

摘要

Disclosed are an A/O-MBBR process-based integrated sewage treatment device and a sewage treatment method. The sewage treatment device comprises a clarification tank, an anoxic tank, a first-stage aerobic tank, a second-stage aerobic tank and a sedimentation tank which are sequentially connected via an overflow structure. A power structure is provided at the bottom of the sedimentation tank. The power structure is connected to the clarification tank via a return pipe. The return pipe is provided with a phosphorus removal agent access port and a pipe mixer. The pipe mixer is located downstream of the phosphorus removal agent access port. The anoxic filler in the anoxic tank is a combined filler, and is formed by combination of a polyurethane filler and a plastic spherical shell wrapping same. A carbon source agent access port is provided in a water inlet baffle of the anoxic tank. The aerobic fillers in the two aerobic tanks are respectively a high-density polyethylene MBBR filler and a PPC biological carrier. The components are installed in a housing, and the housing is made of a glass steel material. The sewage treatment device and the sewage treatment method use an A/O-MBBR pure biofilm process, have a strong impact resistance, and are supplemented with a chemical dephosphorization and carbon source feeding device, which can effectively enhance the removal of nitrogen and phosphorus contaminants.