Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
J Environ Health Sci Eng. 2013 Dec 19;11(1):31. doi: 10.1186/2052-336X-11-31.
Due to the presence of non-biodegradable and toxic compounds, textile wastewater is difficult to treat by conventional methods. In the present study, Electrochemical Fenton (EF) and Chemical Fenton (CF) processes were studied and compared for the treatment of real textile wastewater. The effects of electrical current, ferrous ion, hydrogen peroxide concentration and reaction time on the removal efficiencies of COD and color were investigated. All the experiments were carried out at pH = 3.
Both EF and CF processes were mostly efficient within hydrogen peroxide concentration of 1978 mg/L (H2O2: COD ~ 1.1). The highest COD and color removal efficiencies were 70.6% and 72.9% respectively which were obtained through the EF process in 350 mA electrical current, 1978 mg/L hydrogen peroxide and 60 minutes reaction time. Furthermore, the operational costs of EF and CF processes were 17.56 and 8.6 US$ per kilogram of the removed COD respectively.
It was concluded that the electrochemical Fenton process was more efficient than the chemical Fenton process in the degradation of textile wastewater. Likewise, Although EF process imposed higher operational costs than the CF; it dramatically decreased the reaction time to gain the highest degradation efficiency.
由于存在不可生物降解和有毒化合物，纺织废水很难通过传统方法处理。在本研究中，研究并比较了电化学芬顿（EF）和化学芬顿（CF）工艺，用于处理实际纺织废水。考察了电流、亚铁离子、过氧化氢浓度和反应时间对 COD 和颜色去除率的影响。所有实验均在 pH = 3 下进行。
EF 和 CF 工艺在过氧化氢浓度为 1978 mg/L（H2O2：COD≈1.1）时效率最高。通过在 350 mA 电流、1978 mg/L 过氧化氢和 60 分钟反应时间下的 EF 工艺，分别获得了 70.6%和 72.9%的最高 COD 和颜色去除率。此外，EF 和 CF 工艺的运行成本分别为每去除 1 公斤 COD 17.56 美元和 8.6 美元。
研究表明，在纺织废水降解方面，电化学芬顿工艺比化学芬顿工艺更有效。虽然 EF 工艺的运行成本高于 CF 工艺，但它大大缩短了反应时间，获得了最高的降解效率。
