脉冲电晕放电等离子体耦合土壤颗粒去除废水中盐酸四环素  

Removal of Tetracycline HCl in Wastewater by Pulsed Corona Discharge Plasma Coupled with Soil Particles

作　　者：汪超 王铁成[1,2] 屈广周 梁东丽[1,2] 呼世斌 WANG Chao;WANG Tiecheng;QU Guangzhou;LIANG Dongli;HU Shibin(College of Natural Resources and Environment,Northwest Agriculture and Forestry University,Yangling 712 I00,China;Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China,Ministry of Agriculture,Yangling 712100,China)

机构地区：[1]西北农林科技大学资源环境学院,杨凌712100 [2]农业部西北植物营养与农业环境重点实验室,杨凌712100

出　　处：《高电压技术》2018年第9期3076-3082,共7页High Voltage Engineering

基　　金：陕西省自然科学基金(K3320215185);江西省持久性污染控制与资源循环利用重点实验室开放基金(ES201780295);中央高校基本科研业务费(2452017106);陕西省留学人员科技活动择优资助项目~~

摘　　要：为了提高脉冲电晕放电等离子体（pulsed corona discharge plasma,PCDP）的能量利用效率,发挥土壤颗粒（soil particles,SP）的吸附性能,通过实验研究了PCDP放电、SP吸附以及PCDP-SP耦合3种体系中盐酸四环素（tetracycline·HCl,TC）的去除效果及能量利用效率;考察了TC初始浓度、SP粒径、SP质量和脉冲峰值电压对PCDP-SP耦合体系去除废水中TC的影响;分析了H2O2、O3和·OH等活性物质在体系中的作用。结果表明：PCDP-SP耦合体系可有效去除废水中的TC,处理明显优于SP吸附和PCDP放电体系分别单独处理的效果;加入SP后可大大提高PCDP-SP耦合体系处理TC的能量利用效率;随着TC初始浓度的降低、SP粒径的减小和脉冲峰值的电压升高,TC去除率增加;SP质量对TC的处理有显著影响,但当SP添加量增加到一定值后,TC的去除率变化不大;H2O2、O3和·OH是PCDP-SP耦合体系中的主要活性物种,TC经过这些活性物种作用后被降解为CO2、H2O等小分子物质。In order to improve the energy yield of pulsed corona discharge plasma（PCDP）, and to utilize the adsorption property of soil particles（SP）, we analyzed the removal effects and energy yields of tetracycline·HCl（TC） in three systems（PCDP, SP and PCDP-SP）. Moreover, we investigated the effects of TC initial concentration, soil particle size, soil quality and pulse peak voltage on TC removal, and analyzed the roles of H2O2, O3 and ·OH in the PCDP-SP system. The results show that PCDP combined with SP can effectively remove the TC in wastewater, and the removal efficiency is higher than SP adsorption and PCDP alone. The energy yields of PCDP are improved by adding the SP. As the pulse peak voltage increases and the SP size and TC initial concentration decrease, the removal efficiencies of TC increase. Soil quality has a significant effect on TC removal. However, the removal efficiency of TC has not increased obviously when the SP quality reaches some value. H2O2, O3 and ·OH play crucial roles in TC removal in PCDP-SP system, and TC is degraded to CO2 and H2O by H2O2, O3 and ·OH active species.

关 键 词：脉冲电晕放电 等离子体 土壤颗粒 抗生素 废水处理 

分 类 号：X703[环境科学与工程—环境工程]