非平衡等离子体水处理反应器的优化设计及性能评价

摘要：为进一步改善非平衡等离子体水处理反应器的性能，提高有机污染物的降解效率，在单因素实验的基础上，对反应器的整体结构进行了优化设计，并对优化后反应器的性能进行了定性评价。正交实验结果表明：影响降解效率的主次因素为气高、液高、气体流量；针高度为4mm、电极间距为17mm、气体流量为96ml/min时甲基橙的降解效果最佳。用40目不锈钢网作地电极、采用正脉冲放电能提高放电效率；预处理溶液中放置不锈钢阻挡网有助于提高臭氧的利用率。降解率随溶液初始的增加而降低，重复实验表明实验误差小于3.5%。
关键词：反应器,优化设计,性能评价
Optimization design and performance evaluation of the non-thermal plasmas reactor for wastewater treatment
ZHANG yan-zong, CHEN hong-gang, ZHENG jingtang
(State key Laboratory of Heavy Oil Processing, China University of Petroleum, DongYing 257061)

Abstract: In order to improve performance of the non-thermal plasmas reactor and enhance degradation rate of organic contaminants, the monolithic construction of reactor was optimized on the basis of single factor experiments and a qualitative evaluation. The results of the orthogonal experiment show that primary and secondary factors influencing degradation rate are the gaseous height, the liquid height and the gas flows. The best removal results for methyl orange is obtained when the needles height is 5mm, electrode gap is 13mm and the gas flow is 96ml/min. Discharge efficiency can be improved when positive pulse was applied to the high voltage electrode and ground electrode was made of stainless steel net with 40 mesh. The utilization factor of ozone can be increased while the countercheck nets of stainless steel were placed in the pretreatment aqueous solution. The degrading rate is reduced with the augmentation of initial solution concentration. The repeated test indicates that experiment error is less than 3.5%.
Keywords: Reactor; Optimization design; performance evaluation