Treatment method of breeding wastewater

The invention relates to the technical field of water treatment, and discloses a treatment method of aquaculture wastewater. The invention relates to a culture wastewater treatment method, which comprises: S1, pretreatment: carrying out solid-liquid separation on culture wastewater to remove waste residue, feeding the separated waste liquid into a phosphorus removal unit, and adding a phosphorus removal agent to obtain phosphorus-containing sludge and pretreatment wastewater; s2, biochemical treatment: the pretreated wastewater sequentially passes through an SND-AO-MBR reactor and a denitrification filter to be subjected to a denitrification reaction, and biochemical treatment waste liquid is obtained; s3, advanced treatment: the biochemical treatment waste liquid enters a catalytic oxidation unit to be subjected to oxidation treatment, and the treated water body is obtained. According to the breeding wastewater treatment method provided by the invention, the content of main pollutants CODCr, NH3-N and TN in