含氰废水处理技术

Treatment Technology of Cyanide Wastewater

含氰废水处理工艺很多，综合国内外工艺和技术，提出Ａ／Ａ／Ｏ多级生化处理工艺，对复杂的含氰废水具有很强的实用范围。该工艺在水中投加絮凝剂，用溶气气浮法处理，进入厌氧水解并进入Ａ／Ｏ生化，沉淀出水，达标排放。该工艺有效地解决进水的负荷冲击，确保出水达标。

There are many methods to treat cyanide wastewater.This paper synthesizes the methods and technology both inside and outside China,and puts forward a multistage biochemical treatment process called A/A/O,which is suitable for the complex cyanide wastewater.In this method,after adding flocculation agent,the wastewater is treated by the process of dissolved-air floatation,and then enters the process of anaerobic hydrolyzation and A/O biochemical reaction.The effluent from the sedimentation tank can meet the standard and be discharged.This method can effectively resist the shock loading in influent,ensure the quality of the effluent,and realize the objective of total control of pollutants.