【摘要】 采用UV/Fenton联合氧化法处理糖精钠工业废水,首先单因素实验研究了H₂O₂浓度、FeSO₄浓度、初始pH值和反应时间对糖精钠废水处理效果的影响,并利用响应面优化实验得到了最优条件:反应时间110 min,pH值为6,FeSO₄用量为5 g/L,H₂O₂用量为78 mL/L。响应面实验的结果表明,影响因子的显著性为H₂O₂用量>FeSO₄用量>反应时间>初始pH值;FeSO₄用量和H₂O₂用量的交互作用显著;数学模型回归性较好。以最优条件处理后的糖精钠废水COD去除率为89.8%,BOD去除率为72.7%,TOC去除率为79.2%,同时,色度、悬浮物和氨氮去除率分别达到98.4%,90.9%,98.6%,BOD/COD比值由0.24提高到0.64,糖精钠废水可生化性得到了很大提高,为后续进入工业园区污水处理厂生化处理奠定了基础。更多还原

【Abstract】 UV/Fenton combined oxidation method was used to treat saccharin sodium industrial wastewater. The single-factor experiment was conducted to study the effects of H₂O₂ concentration, FeSO₄ concentration, initial pH value and reaction time on the treatment effect of saccharin sodium industrial wastewater, and the optimal conditions were obtained by response surface optimization experiment: the reaction time of 110 min, pH value of 6, FeSO₄ dosage of 5 g/L and H₂O₂ dosage of 78 mL/L. The response surface experiment showed that, the significance of the influence factor followed H₂O₂ dosage >FeSO₄ dosage>reaction time >initial pH value, the interaction of FeSO₄ and H₂O₂ was significant and the regression of mathematical model was good. With optimal conditions, after treatment for saccharin sodium wastewater, the removal rate COD, BOD and TOC can reach 89.8%,72.7% and 79.2% respectively, at the same time, the removal rate of chromaticity, suspended solids and ammonia nitrogen reach 98.4%, 90.9% and 98.6% respectively, BOD/COD ratio has increased from 0.24 to 0.64 and saccharin sodium wastewater can improve the biochemical greatly, laying foundation for subsequent into the biochemical treatment of industrial park sewage treatment plant.更多还原