Vilve Miia, Hirvonen Arja, Sillanpää Mika
Laboratory of Applied Environmental Chemistry, University of Kuopio, Mikkeli, Finland.
J Hazard Mater. 2009 May 30;164(2-3):1468-73. doi: 10.1016/j.jhazmat.2008.09.058. Epub 2008 Sep 25.
This study presents the efficiency of Fenton process in the degradation of organic compounds of nuclear laundry water. The influence of Fe(2+) and hydrogen peroxide ratio, hydrogen peroxide dose, pH and treatment time were investigated. The degradation of non-ionic surfactant and other organic compounds was analysed as COD, TOC and molecular weight distribution (MWD). The most cost-effective degradation conditions were at H(2)O(2)/Fe(2+) stoichiometric molar ratio of 2 with 5 min mixing and H(2)O(2) dose of 1000 mg l(-1). With the initial pH of 6, the reductions of COD and TOC were 85% and 69%, respectively. However, the removal of the organic compounds was mainly carried out by Fenton-based Fe(3+) coagulation rather than Fenton oxidation. Fenton process proved to be much more efficient than previously performed ozone-based oxidation processes.
本研究展示了芬顿法降解核洗衣废水有机化合物的效率。研究了Fe(2+)与过氧化氢的比例、过氧化氢剂量、pH值和处理时间的影响。通过化学需氧量（COD）、总有机碳（TOC）和分子量分布（MWD）分析了非离子表面活性剂和其他有机化合物的降解情况。最具成本效益的降解条件是H(2)O(2)/Fe(2+)化学计量摩尔比为2，混合5分钟，H(2)O(2)剂量为1000 mg l(-1)。初始pH值为6时，COD和TOC的去除率分别为85%和69%。然而，有机化合物的去除主要是通过基于芬顿的Fe(3+)混凝而非芬顿氧化进行的。事实证明，芬顿法比之前进行的基于臭氧的氧化法效率高得多。
