Advanced treatment and recycling method for filature production wastewater

The invention relates to an advanced treatment and recycling method for filature production wastewater. The method is characterized by comprising the following steps: (A) removing the floats, grease and suspended solids from the filature production wastewater by a first-level pretreatment unit consisting of a grid net and an oil separation sedimentation tank; (B) sequentially feeding the effluent of the oil separation sedimentation tank into a second-level biological treatment unit consisting of an anoxic tank, a plug-flow aeration tank and a secondary sedimentation tank to remove most of the organic pollutants; and (C) further treating the effluent after the second-level biological treatment by a third-level advanced treatment unit, wherein through advanced purifying treatment, the effluent quality meets the water quality requirement in filature production, the effluent is recycled to filature production, and thus the recycling of the filature production wastewater is realized. By adopting the advanced treat