The invention discloses a multistage AO-MBBR (anaerobic-
moving bed biofilm reactor) technological
sewage treatment device with an adjustable
stage number and a treatment method implemented by the aidof the multistage AO-MBBR technological
sewage treatment device, and belongs to the technical field of
sewage treatment. The multistage AO-MBBR technological
sewage treatment device comprises a firstbiochemical reaction basin, a second biochemical reaction basin, a
sedimentation basin, a
phosphorus removal filter basin and a water inlet main
pipe. A
first insertion groove, a second
insertion groove, a third
insertion groove and a fourth
insertion groove are formed in an inner basin wall of the first biochemical reaction basin; a fifth insertion groove, a sixth insertion groove, a seventh insertion groove and an eighth insertion groove are formed in a basin wall of the second biochemical reaction basin, and the first biochemical reaction basin is communicated with the second biochemical reaction basin; the
sedimentation basin is communicated with the second biochemical reaction basin, a water via net is arranged at a communicated position of the
sedimentation basin and the second biochemical reaction basin, a
sludge sedimentation hopper and a
sludge discharge pipe are arranged in the sedimentation basin, the
sludge discharge pipe is arranged at the bottom of the sludge sedimentation hopper, and the sedimentation basin is further communicated with the
phosphorus removal filter basin. The multistage AO-MBBR technological
sewage treatment device and the treatment method have the advantages that multistage AO systems which are serially connected with one another are formed, the locations of insertion plates can be adjusted, accordingly, the multistage AO-MBBR technological
sewage treatment device and the treatment method are high in adaptability to domestic sewage with different levels of
pollution load,
effluent treatment procedures are pertinent, and sewage treatment effects can be guaranteed.