摘要
恶臭污染物的危害已引起世界各国的广泛关注。选取恶臭污染物的典型代表硫化氢(H2S)气体,采用介质阻挡放电低温等离子体反应器在常温常压下对H2S气体进行去除,考察了在高频放电条件下,H2S去除率与放电电压、频率、浓度、停留时间、湿度、和放电间隙、占空比的关系。实验结果表明,较高的放电电压、较长的停留时间、较大的放电间隙有利于提高H2S去除,合适的湿度、放电频率、脉冲调制有利于提高反应器的效率。反应器参数与电源的有效匹配对于提高H2S去除率及节能降耗十分重要。
Odorous pollutants have got the worldwide attentions. Hydrogen sulfide was chosen as aim pollutants to be destructed. A series of experiments were performed in a non-equilibrium plasma reactor to remove hydrogen sulfide from a gaseous influent at room temperature and atmospheric pressure by dielectric barrier discharge （DBD） plasma. Under the condition of high-frequency discharge, the relationship between hydrogen sulfide abatement efficiency and applied voltage, frequency, concentration,residence time,humidity,duty cycle and discharge gap was discussed. The experimental results showed that higher applied voltage ,longer residence time and bigger discharge gap were benefit for the abatement of hydrogen sulfide. Under the same conditions, appropriate humidity, frequency and duty cycle were benefit for the reactor efficiency. It was very important that the matching between power supply and reactor parameters.
出处
《环境科技》
2010年第2期15-18,共4页
Environmental Science and Technology
关键词
低温等离子体
硫化氢
介质阻挡放电
Non-thermal plasma
Hydrogen sulfide
Dielectric barrier discharge （DBD）
