放电长度对DBD放电特性及H2S降解的影响  

作　　者：周伟[1] 梁旭 朱礼想 王梓鑫 沈欣军[1] 

机构地区：[1]沈阳工业大学环境与化学工程学院,辽宁沈阳110870

出　　处：《环境保护与循环经济》2021年第8期23-27,共5页environmental protection and circular economy

基　　金：沈阳市科技计划项目(20-206-4-01);辽宁省“兴辽英才计划”项目(XLYC1908034);辽宁省2020年度科学研究项目(LFGD2020001);辽宁“百千万人才工程”培养项目(2018921006)。

摘　　要：研究了DBD放电装置中放电长度对其放电特性及对H_(2)S去除效果的影响,并探讨了H_(2)S初始浓度、停留时间以及臭氧浓度等工艺参数对H_(2)S去除效果的影响。结果表明,放电长度为30 cm时,放电效果最佳;能量密度增大,O_(3)浓度同样也增大,在同一能量密度情况下,放电长度越长,O_(3)浓度越高;放电长度大小对H_(2)S去除率影响显著,3种放电长度下的H_(2)S去除率均呈上升趋势,但处理能力均不相同;H_(2)S初始浓度越小,停留时间越长,其去除率越高,处理效果越好;O_(3)浓度大小与H_(2)S去除率关系密切,O_(3)浓度降低,H_(2)S去除率增大。The effect of discharge length on the discharge characteristics and H_(2)S removal efficiency in DBD discharge unit was studied,and the influence of process parameters such as H_(2)S initial concentration,residence time and ozone concentration on H_(2)S removal efficiency was discussed.The results show that when the discharge length is 30 cm,the discharge effect is best.When the energy density increases,the ozone concentration also increases.At the same energy density,the longer the discharge length,the higher the ozone concentration.The discharge length has a significant effect on the H_(2)S removal rate.The H_(2)S removal rate under the three discharge lengths all shows an increasing trend,but the processing capacity is different.The smaller the initial concentration of H_(2)S,the longer the residence time,the higher the removal rate and the better the treatment effect.The concentration of ozone is closely related to the H_(2)S removal rate.The H_(2)S removal rate increases with the decrease of ozone concentration.

关 键 词：DBD放电装置 放电长度 工艺参数 

分 类 号：X51[环境科学与工程—环境工程]