Fenton试剂在处理高岭土选矿废水中的应用研究

Application of Fenton reagent in the treatment for kaolin processing waste water

介绍了Fenton试剂处理难降解有机废水的作用机理,初步探讨了H2O2投加量、硫酸亚铁用量及反应时间对水样处理效果的影响。结果表明:仅H2O2作用时,色度去除率达到98%以上,处理后水样色度小于5;在硫酸亚铁投加量为150mg/L时,氧化后废水的COD质量浓度只有29.62mg/L;水样甲醛在反应10min时去除率超过99%,反应2h后无机离子浓度大大降低。

The present paper has introduced the authors＇ research on the working mechanism of processing the non-degradable organic waste water by using Fentun reagent, and the effect of H2O2 dosage input, the amount of FeSO4·TH2O used and the reaction time in the waste water left over from kaolin clay processing. The characteristics of the waste water after Fenton oxidation can be seen as follows： Only under the influence of H2O2, the removing rate of chronla carl be increased to 98% , while the ohruma of oxidized waste water remains less than 5. When thc FeSO4·7H2O has increased to 150 mg/L, the COD concentration can reach 29.62 mg/L via treatment. When the reaction lasts as long as 10 mill, over 99% formaldehyde can be removed. Moreover, two hours later the concentration of inorganie ions would have been greatly reduced.