Advanced treatment system for cyanide-containing wastewater

The utility model discloses an advanced treatment system for cyanide-containing wastewater. The advanced treatment system comprises a regulating reservoir, a first-stage reaction tank, a third-stage reaction tank and multiple-effect clarification treatment equipment which are connected in sequence, the first-stage reaction tank is connected with a sulfuric acid dosing device and a sodium sulfite dosing device, and a 1 # PH meter is also arranged in the first-stage reaction tank; and the third-stage reaction tank is connected with a PFS dosing device. According to the utility model, cyanogen is removed by adopting a sodium sulfite oxidation method, heavy metal arsenic in the wastewater is removed by adopting the PFS, and solid-liquid separation is carried out by adopting the multi-effect clarification treatment equipment, so that the deep treatment of the cyanogen-containing wastewater is realized, and the treatment effect is good. 本实用新型公开一种含氰废水深度处理系统，包括依次连接的调节池、一级反应槽、三级反应槽、多效澄清处理设备；一级反应槽连接硫酸加药装置及亚硫酸钠加药装置，一级反应