Cyanide-containing wastewater treatment system

The utility model discloses a cyanide-containing wastewater treatment system which comprises a first adjusting tank, a primary cyanide breaking tank, a secondary cyanide breaking tank, a broken cyanide sedimentation tank, a second adjusting tank, a primary flocculation tank, a secondary flocculation tank, a sedimentation tank, a UF (ultrafiltration) membrane coagulation suction filter and a discharge pool which are sequentially communicated through a pipeline, wherein a first pump is arranged on a pipeline between the first adjusting tank and the primary flocculation tank; and a second pump is arranged on a pipeline between the second adjusting tank and the primary flocculation tank. The cyanide-containing wastewater treatment system disclosed by the utility model realizes the advantages of simple treatment method and good cyanide content treatment efficiency by combining a chemical two-level cyanide breaking method and a physical-chemical sedimentation method.