Polycyclic aromatic hydrocarbons (PAHs) in soil are not only detrimental to environment but also to human health. Double dielectric barrier discharge (DDBD) plasma reactor used for the remediation of pyrene contaminated soil was studied. The performance of DDBD reactor was optimized with influential parameters including applied voltage, type of carrier gas, air feeding rate as well as pyrene initial concentration. The analysis of variance (ANOVA) results showed that input energy had a great effect on pyrene remediation efficiency followed by pyrene initial concentration, while, the effect of air feeding rate was insignificant. More specifically, the remediation efficiency of pyrene under air, nitrogen and argon as carrier gas were approximately 79.7, 40.7 and 38.2% respectively. Pyrene remediation efficiency is favored at high level of applied voltages and low level of pyrene initial concentration (10 mgkg⁻¹) and air feeding rate (0.85 L/min). Moreover, computation of the energy efficiency of the DDBD system disclosed that an optimal applied voltage (35.8 kV) and higher initial pyrene concentration (200 mgkg⁻¹) favored the high energy efficiency. A regression model predicting pyrene remediation under DDBD plasma condition was developed using the data from a face-centered central composite design (FCCD) experiment. Finally, the residual toxicity analysis depicted that the respiratory activity increased more than 21 times (from 0.04 to 0.849 mg O₂ g⁻¹) with a pyrene remediation efficiency of 81.1%. The study demonstrated the DDBD plasma technology is a promising method not only for high efficiency of pyrene remediation, but also recovering biological function without changing the physical-chemical properties of soil.

土壤中的多环芳烃（PAHs）不仅对环境有害，而且对人体健康也有害。研究了用于修复pyr污染土壤的双电介质阻挡放电（DDBD）等离子体反应器。DDBD反应器的性能通过影响参数进行了优化，包括施加电压，载气类型，空气进料速率以及rate的初始浓度。方差分析（ANOVA）结果表明，输入能量对pyr的修复效率有很大影响，其次为initial的初始浓度，而进气速率的影响不明显。更具体地，在空气，氮气和氩气作为载气的情况下，respectively的修复效率分别约为79.7％，40.7％和38.2％。^-1）和空气进给速度（0.85 L / min）。此外，对DDBD系统的能量效率的计算揭示，最佳施加电压（35.8kV）和较高的初始initial浓度（200mgkg ^-1）有利于高能量效率。使用来自以面心为中心的中央复合设计（FCCD）实验的数据，开发了预测DDBD等离子体条件下pyr修复的回归模型。最后，残留毒性分析表明，呼吸活动增加了21倍以上（从0.04增至0.849 mg O ₂ g ^-1），re的修复效率为81.1％。研究表明，DDBD等离子体技术不仅是high修复的高效方法，而且在不改变土壤理化性质的情况下恢复生物学功能是一种很有前途的方法。