“氧化·脱色·絮凝”协同法处理含吡啶酮废水

"Oxidation,Decoloration and Flocculation" Cooperation Method to Dispose Pyridine-2-Ketone Production Wastewater

根据染料中间体吡啶-2-酮生产废水的特点,提出了利用“氧化、脱色和絮凝”三位一体的物化方法处理这种废水;探究了搅拌速度、絮凝反应时间、pH值、药剂用量、废水浓度和温度对COD去除率和脱色率的影响,得出了最佳工艺条件.研究结果表明,在常温下,两性聚丙烯酰胺NDPAM用量35 mg/L,氧化交联剂PDO用量0.55 mL/L,pH=5.7,搅拌速度80 r/m in,絮凝时间为15 m in和静止时间为30 m in的条件下,COD的去除率和脱色率均达到98%,处理后的废水达到了可生化的指标范围.并对处理成本和絮凝动力学机理进行了探讨.

According to the characteristics of pyridine-2-ketone production waste water, we used a new physical chemistry method to dispose the waste water. The effects of the velocity of mix-round, pHs, the quality of medicament, the concentration of waster water and temperature on the COD and chromaticity removal rate were investigated, and the optimum process conditions were found out. Testing results showed that the optimum conditions： the quality of floeculants was 35 mg/L, regimenting agent was 0.55 mg/L, pH =5.7, the velocity of mix-round was 80 r/min, the time of flocculation was 15 rain, the time of stewing was 30 rain, the rate of the COD and chromaticity could reach 98 %. After processing, the waste water achieves the biochemistry scope. The process cost and the flocculation dynamics mechanism were also discussed.