【摘要】 为解决焦化废水的传统生化处理工艺出水水质不达标且难以深度处理的问题,采用磁纳米Fe₃O₄类芬顿法、芬顿氧化法分别对其进行降解,并利用Fe₃O₄-H₂O₂类芬顿体系能够磁力回收的特性多次进行重复使用。通过单因素分析获得了类芬顿法的最佳反应条件,在此条件下重复使用Fe₃O₄进行试验并使系统稳定运行,结果表明对COD和挥发酚的去除率分别在67.9%和97.8%以上;传统芬顿法进行参数优化后对COD和挥发酚的去除率分别为68.04%和98.48%,两种方法均能稳定有效处理焦化废水。通过经济性分析,类芬顿法由于其特有的重复性在成本方面存在巨大潜力,与传统芬顿法相比具有十分广阔的应用前景。更多还原

【Abstract】 To solve the problems that the biochemical effluent from traditional processes in the treatment of coking wastewater could not meet the standard,and it was hard for advanced treatment,the biochemical effluent of coking wastewater was degraded using Fe₃O₄ magnetic nanoparticles Fenton-like method and Fenton method,respectively,and Fe₃O₄-H₂O₂ was reused because it could be recycled by magnetic separation.The optimum reaction conditions were obtained through single factor analysis method.Under this condition,Fe₃O₄ was reused,and the system was operated stably.The removal rates of COD and volatile phenol were above 67.9% and 97.8%,respectively.After the parameter optimization,the traditional Fenton method could remove COD and volatile phenol by 68.04% and 98.48%,respectively.Both of the methods could treat coking wastewater stably and effectively.After the economic analysis,the Fenton-like method has great potential in cost-saving because of its special repeatability and wider application prospects than the traditional Fenton method.更多还原