摘要
为了研究水处理中对于介质阻挡放电(DBD)的放电功率和处理效果的很多影响因素,搭建了可实现双介质阻挡放电的实验平台。实验结果表明:相同实验参数下,放电时间越长则放电功率越大,尤其是放电前60 s内放电功率上升最明显,当120 s左右放电稳定时,放电功率可达到初始放电功率的2倍左右;当空气间隙固定时,液面高度与放电功率呈非线性关系,电源电压较小时,液面高度越小则放电功率越大,随着电源电压的升高,液面高度的影响减小;另一影响放电功率的重要因素是初始电导率,相同输出电压下,高电导率液体可以得到更大的放电功率;但是,放电功率相同时,初始电导率越低则越有利于化学反应的进行,其处理效果也越好。通过研究水处理中介质阻挡放电在各参数尤其是液体参数变化时的放电功率变化和处理效果差异,可对将介质阻挡放电应用到污水处理中的相关理论有所完善,亦可供设计、优化介质阻挡放电水处理装置有所参考。
In dielectricbarrierdischarge （DBD） water treatment, there are lots of factors influencing the discharge power and treatment effect. To investigate these factors, we established a platform for doubledielectric barrier discharge expe riments. The results show that, under the same conditions, the plasma power increases with discharge time. Discharge power grows most obviously in the initial 60 seconds, and after 120 seconds, it gets stable at about 2 times as much as its initial value. When the air gap is fixed, there is nonlinear relationship between liquid surface height and discharge power： under a relatively low applied voltage, discharge power decreases with increasing liquid surface height, but this effect weakens with the increase of applied voltage. The initial conductivity of liquid is another important factor influencing the discharge power： under the same output voltage, high conductivity liquid will have high discharge power; but with the same discharge power, lower initial conductivity benefits chemical reaction, as well as the treatment effect. Researching the effect of parameters of DBD in water treatment, especially the liquid parameters, on power changes and treatment ef fect will improve the related theory about DBD applications in sewage treatment, and provide references for the design and optimization of DBD water treatment equipment.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2014年第1期187-193,共7页
High Voltage Engineering
基金
输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512711204)
中央高校基本科研业务费(CDJRC10150010
CDJZR11150002)
国家"111"计划(B08036)~~
关键词
介质阻挡放电
DBD
水处理
靛蓝胭脂红
脱色率
Lissajous图
电导率
dielectric barrier discharge
DBD
water treatment
Indigo carmine
decoloring rate
Lissajous figure
elec-trical conductivity
