固体强酸催化类Fenton反应降解有机废水

Degradation of Organic Wastewater by Like-Fenton's Process Using Solid Supper Acid

制备出了Gd3+-SO42-/TiO2(GST)、SO42-/TiO2-Al2O3(STA)、Gd3+-SO42-/TiO2-Al2O3(GSTA)、SO24-/TiO2(ST)四种固体强酸,并分别用其对1 000 mg/L的甲基橙溶液和垃圾焚烧发电厂渗滤液进行降解。实验结果表明:120 min内4种溶液对甲基橙的降解率均达到90%以上,其中GST的降解效率达到95%;30 min内对垃圾渗滤液的COD去除效率为25%～45%,其中GSTA的降解率较高,达到45%;对垃圾渗滤液的NH4-N的去除率最高也达到30%。由此可见,固体强酸催化类Fenton反应对有机废水具有较优的处理效果,可用于此类废水的预处理或深度处理。

Solid supper acid Gd3 ＋ - SOl-/TiO2 （ GST）, SOl-/TiO2 - Al2O3 （ STA ）, Gd3 ＋ - SO42- / TiO2 -Al2O3 （GSTA） ,SO42-/TiO2 were prepared in this work, and were used to degrade 1000 mg/L methyl orange （MeO） and leachate from municipal solid waste incinerator plant. The experimental re- suits indicated that more than 90% MeO was degraded within 120 min, and nearly 95% MeO was de- graded when using GST as solid supper acid. Besides, the removal efficiency of the COD of the leachate was between 25% -45% within 30 min, while GSTA achieved the highest removal efficiency of 45%. The removal efficiency of NH4-N of the leachate was about 30%. The resuilts also revealed that the organic wastewater can be treated by this like-Fenton＇ s process using solid supper acid as pre-treatment or depth-treatment.