阿特拉津生产废水处理工艺设计及运行

Design and operation of the treating technology for atrazine processing wastewater

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、CODCr为2 000 mg/L时,处理后出水阿特拉津≤1.0 mg/L、CODCr≤300 mg/L。工程实践表明:阿特拉津和CODCr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。

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 CODCr 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 CODCr 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）.