Fenton法处理造纸废水反渗透浓水的研究

Treatment of Concentrated Papermaking Wastewater from Reverse Osmosis by Fenton Process

关键词:  造纸废水  反渗透浓水  Fenton氧化法

Key Words:papermaking wastewater  RO concentrated water  fenton process

摘要:采用Fenton法处理造纸反渗透(RO)浓水,通过正交实验确定了Fenton反应各种因子的影响大小,探讨了H₂O₂浓度、Fe²⁺浓度、反应时间和体系pH值等条件对COD_Cr去除效果的影响,实验结果表明，采用Fenton高级氧化法处理RO浓水,当体系pH值为4、H₂O₂浓度为5 mmol/L、Fe²⁺浓度为2.5 mmol/L、反应时间1.5 h时，COD_Cr去除率可以超过60%,出水COD_Cr可降低至100 mg/L以下,可满足造纸废水排放标准的要求。

Abstract:The advanced treatment of concentrated papermaking wastewater from reverse osmosis by Fenton process was studied. Effect of several factors, such as nH₂O₂/nFe²⁺, H₂O₂ dosage, Fe²⁺ dosage, reaction time and pH on the removal of COD_Cr was discussed. The results of study showed that under the optimum condition of pH=4, H₂O₂=5 mmol/L, Fe²⁺=2.5 mmol/L, COD_Cr reduced to less than 100 mg/L and the removal ratio was over 60%.