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采用接触辉光放电反应器降解罗丹明B,考察降解过程中脱色、矿化以及毒性变化.实验结果表明,Na2SO4为电解质时,降解60 min后,8.0 mg/L罗丹明B脱色率为77.72％,但TOC去除率仅为5.12％,抑制率则从初始27.02％上升至72.86％.Fe2+为0.3 mmol/L时,放电30 min,脱色率接近100％,矿化率为50.12％,抑制率则从60.21％减小到14.70％.NaCl为电解质时,放电30 min,脱色率接近100％,TOC去除率为48.09％,抑制率在前5 min升高然后逐渐降低到3.07％.一定浓度的Fe2+或Cl-不仅能有效加快罗丹明B溶液的脱色率、矿化率,且能降低降解液的毒性.“,”The decolorization,mineralization and toxicity change of Rhodamine B (RB) in aqueous solution with contact glow discharge electrolysis (CGDE) were investigated.With Na2SO4 as the electrolyte,after 60 min CGDE treatment,the decolorization efficiency of 8.0 mg/L RB was 77.72％ and the TOC removal was 5.12％.However,the inhibition rate increased from the initial 27.02％ to 72.86％.With 0.3 mmol/L Fe2+ in presence of solution,the decolorization efficiency was close to 100％ after 30 min treatment and 50.12％ of TOC was removed.The inhibition rate decreased from 60.21％ to 14.70％.With NaCl as electrolyte,after 30 min treatment,the decolorization efficiency was close to 100％ and 48.09％ of TOC was removed.The inhibition rate abruptly decreased to 3.07％.The presence of Fe2+ or Cl-not only accelerated the decolorization and mineralization of RB,but also decreased the toxicity of the degradation solution,which provided fundamental data for the practical application.