San Sebastián Martínez Nora, Fíguls Fernández Josep, Font Segura Xavier, Sánchez Ferrer Antoni
Escola Universitària Politècnica del Medi Ambient, Rbla Pompeu Fabra 1, Mollet del Vallès, 08100, Barcelona, Spain
J Hazard Mater. 2003 Aug 1;101(3):315-22. doi: 10.1016/s0304-3894(03)00207-3.
The pre-oxidation of an extremely polluted pharmaceutical wastewater (chemical oxygen demand (COD) value of 362,000mg/l) using the Fenton's reagent has been systematically studied using an experimental design technique. The parameters influencing the COD removal of the wastewater, namely temperature, ferrous ion and hydrogen peroxide concentrations have been optimized to achieve a COD global reduction of 56.4%. The total range of the proposed experimental design, however, could not be tested because under some conditions (hydrogen peroxide concentration over 5M) the Fenton's reaction became violent and could not be controlled, probably due to the high exothermic effect associated with COD oxidation. For the tested conditions, the optimal values of hydrogen peroxide and ferrous ion concentration were 3 and 0.3M, respectively, whereas temperature only showed a mild positive effect on COD removal. In addition, during the first 10min of Fenton's reaction, more than 90% of the total COD removal can be achieved.Fenton's reaction has proved to be a feasible technique for the pre-oxidation of the wastewater under study, and can be considered a suitable pre-treatment for this type of wastewaters.
采用实验设计技术，对一种污染极其严重的制药废水（化学需氧量（COD）值为362,000mg/l）进行芬顿试剂预氧化处理进行了系统研究。对影响该废水COD去除率的参数，即温度、亚铁离子浓度和过氧化氢浓度进行了优化，使COD总去除率达到56.4%。然而，所提出的实验设计的整个范围无法进行测试，因为在某些条件下（过氧化氢浓度超过5M），芬顿反应变得剧烈且无法控制，这可能是由于与COD氧化相关的高放热效应。对于测试条件，过氧化氢和亚铁离子浓度的最佳值分别为3M和0.3M，而温度仅对COD去除显示出轻微的积极影响。此外，在芬顿反应的前10分钟内，可实现总COD去除率的90%以上。芬顿反应已被证明是对所研究废水进行预氧化的一种可行技术，可被视为这类废水的一种合适预处理方法。
