Lapertot Milena, Pulgarín César, Fernández-Ibáñez Pilar, Maldonado Manuel I, Pérez-Estrada Leonidas, Oller Isabel, Gernjak Wolfgang, Malato Sixto
Laboratory of Environmental Biotechnology, ENAC, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland.
Water Res. 2006 Mar;40(5):1086-94. doi: 10.1016/j.watres.2006.01.002.
In this paper, we present the photo-Fenton treatment in a solar pilot-plant scale of several EU priority hazardous substances (Alachlor, Atrazine, Chlorfenvinphos, Diuron and Isoproturon) dissolved in water. The results have been evaluated not only from the point of view of contaminant disappearance and mineralisation, but also of toxicity reduction and enhancement of biodegradability. Degradation was monitored by total organic carbon, pesticide concentration by HPLC-UV, inorganics released by ion chromatography, and biodegradability by the Zahn-Wellens (Z-W) test. The total volume of the solar photoreactor, composed of compound parabolic collectors with a total area of 4.16m2, was between 70 and 82 L. The treatment was shown to be effective, mineralising all of the pesticides tested, both alone and in mixtures. In order to find out the conditions for biocompatibility using the photo-Fenton reaction as a pre-treatment step, wastewater inoculated with unacclimated municipal sludge containing pesticides after certain degradation time was evaluated by the Z-W test. Biodegradability was enhanced (70% considered biodegradable) by the photo-Fenton treatment after 12-25min. It may be concluded that the photo-Fenton treatment consistently enhances biodegradability of wastewater containing pesticides.
在本文中，我们展示了在太阳能中试规模下对溶解于水中的几种欧盟优先管控有害物质（甲草胺、阿特拉津、毒虫畏、敌草隆和异丙隆）进行光芬顿处理的情况。研究结果不仅从污染物去除和矿化的角度进行了评估，还从毒性降低和生物降解性增强的角度进行了评估。通过总有机碳监测降解情况，通过高效液相色谱 - 紫外检测农药浓度，通过离子色谱检测释放的无机物，并通过赞恩 - 韦伦斯（Z - W）试验检测生物降解性。太阳能光反应器的总体积由总面积为4.16平方米的复合抛物面集热器组成，介于70至82升之间。结果表明该处理方法有效，能使所有单独及混合测试的农药实现矿化。为了找出将光芬顿反应作为预处理步骤时的生物相容性条件，通过Z - W试验对在特定降解时间后接种了含农药的未驯化城市污泥的废水进行了评估。经过12 - 25分钟的光芬顿处理后，生物降解性得到增强（70%被认为具有生物降解性）。可以得出结论，光芬顿处理能持续提高含农药废水的生物降解性。
