UV/H2O2法降解乙酸影响因素的研究

通过采用UV/H₂O₂法，以乙酸为研究对象，高压汞灯为光源，在温度为（35±2）℃、曝空气量为0.8 L/min的条件下，研究了UV/H₂O₂技术对500 mL浓度为8 mmol/L的乙酸溶液进行的光降解反应。考察了各种因素对UV/H₂O₂降解乙酸的影响。实验表明，H₂O₂浓度为15 mmol/L、pH值为3.4时，乙酸降解效果最佳，此时，在240 min内，乙酸、TOC和COD的去除率可分别达到98%、98%和97%，体系中乙酸完全矿化。利用UV/H₂O₂法对实际糠醛废水进行了降解，效果良好。

Study on Photodegradation of Acetic Acid by UV/H2O2 Processes

While the UV lamp (400W) was lamp-house and acetic acid was an object of research, the photodegradation reaction of 500 mL of 8 mmol/L acetic acid was investigated under the airflow rate of 0.8 L/min and temperature of (35±2)℃ by UV/H₂O₂ methods. All kinds of influencing factors were investigated. According to the results, the optimal H₂O₂ effect was obtained when the amount of H₂O₂ is 15 mmol/L, and the initial pH of reaction solution was 3.4. At this condition, the disposal rates of acetic acid, TOC and COD in the reaction solution respectively reached 98%, 98% and 97% within 240 min, acetic acid was completely mineralized in the reaction system. The UV/H₂O₂ method was also very well for the degradation of the real furfural wastewater had been proved by the experiments.