多通道介质阻挡放电反应器特性及净化甲醛研究  

Characteristic of Multi-Channel Dielectric Barrier Discharge Reactor and Its Aapplication in HCHO Purification

作　　者：徐跃武[1] 孙亚兵[1] 杨海峰[1] 冯景伟[1] 周晓霞[1] 

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,南京210093

出　　处：《河南科学》2008年第11期1327-1329,共3页Henan Science

基　　金：水处理与水环境修复教育部工程研究中心开放基金资助课题(WTWER0709)

摘　　要：采用介质阻挡放电反应器净化室内空气过程中会产生大量臭氧,易造成二次污染,为了降低介质阻挡放电反应器净化空气时产生的臭氧浓度,设计了一种多通道介质阻挡放电空气净化装置,并对其放电特性、产生的臭氧浓度以及对甲醛的净化效率进行了实验研究.实验结果表明,在放电间隙为2.0mm时臭氧的浓度达到最大值(0.55mg/m3),随着反应器放电小单元组数的增多,臭氧浓度及击穿电压都呈现了下降的趋势;甲醛的净化效率随着输入电压的增大而呈上升趋势,当输入电压为90V,甲醛初始质量浓度为0.15 mg/m3时,其净化效率达到了97.8%.这种把放电区分成多个小结构单元的空气净化装置,具有对甲醛净化效率高、产生臭氧少的优点.Large amount of ozone was produced in the application of dielectric barrier discharge reactor for indoor air cleaning, which led the secondary pollution of the treated air. In order to decrease the amount of the produced ozone in air cleaning using dielectric barrier discharge reactor, a multi-channel dielectric barrier discharge indoor air cleaner was designed. The characteristic of discharge,the concentration of the produced ozone, the purification efficiency of HCHO with the newly designed multi-channel dielectric barrier discharge indoor air cleaner were investigated. The results showed that the concentration of the produced ozone got to maximum （0.55 mg/m^3） when the discharge space was 2.0 mm. Both the produced ozone concentration and breakup voltage declined when the amount of the discharge units increased. The purification efficiency of HCHO increased with increasing applied voltage. The purification efficiency of HCHO reached 97.8 % when the applied voltage was 90 V and the initial concentration of HCHO was 0.15 mg/m^3. Higher HCHO purification efficiency and small quantity of ozone production were the virtue of the newly designed muhi-channel dielectric barrier discharge air cleaner, which separated the discharge plate into many small units.

关 键 词：多通道介质阻挡放电 放电单元 臭氧 甲醛 

分 类 号：X505[环境科学与工程—环境工程]