高铁酸钾-Fenton联合氧化处理制革综合废水  

Potassium ferrate-Fenton combined oxidation treatment of comprehensive tannery wastewater

作　　者：范荣桂 关怀远 张玛格 FAN Rong-gui;GUAN Huai-yuan;ZHANG Ma-ge(College of Environmental Science and Engineering,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学环境科学与工程学院,辽宁阜新123000

出　　处：《化学研究与应用》2023年第6期1475-1480,共6页Chemical Research and Application

摘　　要：针对制革综合废水中COD和Cl^(-)偏高的问题,采用单因素和正交实验方法,研究了高铁酸钾和Fenton单独及联合氧化处理制革综合废水。结果表明:与单独使用高铁酸钾或Fenton氧化相比,高铁酸钾-Fenton联合氧化具有相互促进作用,能显著提高制革废水中COD和Cl^(-)的去除效果,有利于后续的生物处理与废水回用。综合考虑处理效率和经济成本,得到联合氧化的最佳工艺条件:高铁酸钾氧化废水初始pH=9,K2 FeO4投加量为5 g·L^(-1),反应时间30 min;Fenton氧化pH=3,H2 O2投加量为12.5 mL·L^(-1),反应时间60 min;此条件下,制革综合废水的COD和Cl^(-)去除率分别为88.36%和86.96%。Aiming at the problems of high COD and Cl^(-)in the comprehensive tanning wastewater,the single and combined oxidation of potassium ferrate-Fenton were used to treat the comprehensive tannery wastewater by single and orthogonal factor experiments.The results showed that compared with the single use of potassium ferrate or Fenton oxidation,the combined oxidation of potassium ferrate and Fenton had a mutually reinforcing effect,which can significantly improve the removal effect of COD and Cl^(-)in tannery wastewater,which was beneficial to the subsequent biological treatment and wastewater reuse.Considering the treatment efficiency and economic cost,the optimal process conditions of potassium ferrate-Fenton were proposed:potassium ferrate oxidation wastewater initial pH of 9,K2 FeO4 dosage of 5 g·L^(-1),and the reaction time of 30 min;Fenton oxidation pH of 3,H2 O2 dosage of 12.5 mL·L^(-1),and the reaction time of 60 min;under this condition,the removal rates of COD and Cl^(-)in the wastewater were 88.36%and 86.96%,respectively.

关 键 词：制革废水 高铁酸钾 FENTON 联合氧化 

分 类 号：O614.8[理学—无机化学]