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利用太阳能使有机污染物降解以改善水环境质量已引起环境保护工作者的重视。扩展有机物降解中光谱响应范围，充分利用太阳能是需要研究解决的关键问题。以偶氮染料（刚果红、甲基橙）为目标物，对自然光源下，应用草酸铁／过氧化氢体系的降解过程进行了试验研究。以一级反应动力学方程为基础，对影响反应的主要因素进行了分析，并与应用ＴｉＯ２、ＷＯ３为催化剂的试验进行比较。结果表明，通过日光／草酸铁／过氧化氢的作用，可有效地净化含染料废水。
The use of solar energy to degrade organic pollutants to improve water quality has caused environmental protection workers attention. Expanding the range of spectral response in the degradation of organic matter and making full use of solar energy are the key issues to be solved. Azo dyes (Congo red, methyl orange) as the target, the natural light source, the application of oxalate / hydrogen peroxide system degradation process were studied. Based on the first-order reaction kinetics equation, the main factors influencing the reaction were analyzed and compared with those using TiO2 and WO3 as catalysts. The results show that the dye-containing wastewater can be effectively purified by the action of sunlight / oxalic acid / hydrogen peroxide.