超临界水氧化处理毒死蜱产生的缩合废水

Treatment of Wastewater from Production of Chlorpyrifos by Supercritical Water Oxidation

采用连续流超临界水氧化技术处理毒死蜱生产废水,研究了反应温度、压力、停留时间及过氧量4个因素对处理毒死蜱生产废水效果的影响。结果表明:温度、压力、停留时间和过氧倍数均对超临界水氧化的污染物转化进程产生影响,其中温度对有机氮的转化影响最为显著,温度大于450℃,有机氮转化完全,COD、TN的去除率分别大于99%和90%,而氨氮转化去除的反应条件较为苛刻,与同步脱氮技术相结合,可实现COD、氨氮等污染物的高效去除和达标排放。

Continuous supercritical water oxidation was used to treat with wastewater from production of chlorpyrifos.Studied four factors of chlorpyrifos production wastewater treatment effect such as the reaction temperature,pressure,residence time and the oxygen multiples.The results show that the temperature,pressure,residence time and the oxygen multiples are impact on pollutants of supercritical water oxidation process,the temperature effect on organic nitrogen transformation is the most significant,temperature higher than 450 ℃,organic nitrogen into completely,the removal rate of COD,TN is greater than 99% and 90% respectively,and the removal efficiency of ammonia nitrogen conversion reaction conditions are harsh,combined with simultaneous denitrification technology,can realize high removal of COD and ammonia nitrogen pollutants and emissions standards.