介质阻挡放电-微曝气降解苯酚影响因素的研究

Study on the Factors Influencing Phenol Degradation in Water by Dielectric Barrier Discharge/Micro-aeration

以苯酚模拟有机废水,采用介质阻挡放电等离子体-微曝气对苯酚废水进行实验研究,并采用响应面分析法对苯酚降解影响因素:苯酚初始浓度、放电电压、气体流量及处理时间等进行优化。实验结果表明:苯酚初始浓度为40.41 mg/L,气体流量为150.38 m L/min,放电电压为34.71 k V,处理时间为29.71 min,苯酚降解率达到最高值74.21%。

The simulated phenol organic wastewater was degraded by dielectric barrier discharge plasma - micro aeration, and effects of initial concentration, discharge voltage, flow rate, process time on degradation rate of phenol wastewater were investigated. Dielectric barrier discharge plasma-micro aeration experimental results were analyzed and optimized adopting response surface methodology （RSM）, and results showed that the optimal process parameters for this method were initial concentration of 40.41 mg/L, discharge voltage of 34.71 kV, flow rate of 150.38 mL/min, and process time of 29.71 rain, and the highest phenol removal efficiency 74.21% could be achieved under these conditions.