高压脉冲电晕放电等离子体降解废水中苯酚

A preliminary study of pulsed high-voltage corona discharge plasma for the degradation of phenol in aqueous solution

考察了多种因素对高压脉冲电晕放电低温等离子体法降解水中苯酚效果的影响 .提高脉冲电压峰值和放电频率、延长放电时间等均可大大提高降解效果 .自由基清除剂如正丁醇和缓冲剂如硼酸盐的存在均会显著降低降解效果 .1 0 0mg·L- 1苯酚废水溶液放电处理 1 80min ,最高降解率达 67 3 % .当放电处理 42 0min时 ,废水的TOC下降 83 8% .

Effects of some factors were studied on the degradation of phenol in aqueous solution with pulsed high\|voltage corona discharge plasma. The degradation of phenol could be raised considerably by increasing the peak voltage and discharge frequency and by prolonging the discharge time. The existence of radical scavenger such as n\|butanol and buffer such as borate could decrease the degradation of phenol. The maximum degradation of 100?mg·L -1 phenol solution was 67 3% after discharging for 180?minutes. The TOC of wastewater decreased by 83 8% when discharge time was 420?minutes.