Abstract:

The practical treatment of atrazine processing wastewater by neutralization and anaeroxic-anoxic-oxic（A²O） process is introduced.According to the wastewater quality,the biochemical treatment process,alkaline pyrolysis and the three-effect evaporation desalination pretreatment +A²O，have been used for treating atrazine processing wastewater.When the influent mass concentrations of atrazine and COD_Cr are 36.0 mg/L and 2 000 mg/L,respectively,the treated effluent mass concentrations are below 1.0 mg/L and 300 mg/L,respectively.The engineering practice indicates that the average removal rates of atrazine and COD_Cr are 98.8%-99.6% and 83.1%-91.2% respectively.And,the effluent quality is far better than the third grade standard of Integrated Wastewater Discharge Standard（GB 8798—1996）.

Key words: atrazine, wastewater, alkaline pyrolysis, A²O

摘要：

采用碱性热解+三效蒸发除盐预处理+A²O 生化处理工艺处理阿特拉津生产废水。在进水阿特拉津为36.0 mg/L、COD_Cr为2 000 mg/L 时，处理后出水阿特拉津≤1.0 mg/L、COD_Cr≤300 mg/L。工程实践表明：阿特拉津和COD_Cr的去除率分别达到98.8%~99.6%和83.1%~91.2%，出水指标远低于污水综合排放标准（GB 8798—1996）中的三级标准。

关键词: 阿特拉津, 废水, 碱性热解, A2O