非平衡等離子體水處理反應(yīng)器的優(yōu)化設(shè)計(jì)及性能評價(jià)

摘要：為進(jìn)一步改善非平衡等離子體水處理反應(yīng)器的性能，提高有機(jī)污染物的降解效率，在單因素實(shí)驗(yàn)的基礎(chǔ)上，對反應(yīng)器的整體結(jié)構(gòu)進(jìn)行了優(yōu)化設(shè)計(jì)，并對優(yōu)化后反應(yīng)器的性能進(jìn)行了定性評價(jià)。正交實(shí)驗(yàn)結(jié)果表明：影響降解效率的主次因素為氣高、液高、氣體流量；針高度為4mm、電極間距為17mm、氣體流量為96ml/min時(shí)甲基橙的降解效果最佳。用40目不銹鋼網(wǎng)作地電極、采用正脈沖放電能提高放電效率；預(yù)處理溶液中放置不銹鋼阻擋網(wǎng)有助于提高臭氧的利用率。降解率隨溶液初始的增加而降低，重復(fù)實(shí)驗(yàn)表明實(shí)驗(yàn)誤差小于3.5%。
關(guān)鍵詞：反應(yīng)器,優(yōu)化設(shè)計(jì),性能評價(jià)
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