污染控制技术及原理
唐文伟,曾新平,胡中华.芬顿试剂和湿式过氧化氢氧化法处理乳化液废水研究[J].环境科学学报,2006,26(8):1265-1270
芬顿试剂和湿式过氧化氢氧化法处理乳化液废水研究
- Study of Fenton's reagent and wet hydrogen peroxide oxidation for treatment of emulsified wastewater
- 基金项目：
- 作者
- 单位
- 唐文伟
- 同济大学化学系, 上海 200092
- 曾新平
- 同济大学生命科学与技术学院, 上海 200092
- 胡中华
- 同济大学化学系, 上海 200092
- 摘要：研究了常温下芬顿试剂氧化乳化液废水的特性,当进水COD为50540mg·L-1,常温下芬顿试剂氧化的最佳条件为H2O2/COD的质量浓度比为2.0,Fe2+/COD的质量浓度比为0.075时,其COD去除约91%;常温下芬顿试剂氧化乳化液废水时存在明显的诱导期,用表观一级模型分别解释了快速和慢速的反应过程.另外,进一步研究了以H2O2替代部分或全部空气即湿式过氧化氢氧化工艺的氧化能力,湿式双氧水氧化可显著降低亚铁投量(Fe2+投量为50mg·L-1),150℃时COD去除率为82.4%;以少量的双氧水(H2O2/COD=0.05)为引发剂,在120℃下COD去除率达52.0%,催化效果显著.
- Abstract：Fenton's reagent was applied to treat emulsified wastewater at room temperature. The optimal conditions for the treatment were investigated. As a result, when the COD is 50540mg·L-1 in the inflow, the optimal parameters were 2.0 and 0.075 for H2O2 /COD (w/w) and Fe2+ /COD (w/w), respectively. The COD could be removed by approximately 91%. An inductive period was observed in the process. Apparent kinetics of first order was used to explain fast and slow oxidation process, respectively. Furthermore, the role of H2O2 was studied in the wet air oxidation process, where the air air was replaced partially or completely by H2O2. The dosage of ferrous ion (50mg·L-1 Fe2+) was significantly decreased due to the addition of H2O2; the removal efficiency for COD is 82.4% at 150 ℃. The COD removal reached 52.0% at 120 ℃ by using H2O2 (H2O2 /COD=0.05) as the initiator, suggesting an effectively catalytic oxidation.
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