摘要：

采用Fenton氧化-铁炭内电解组合工艺,对高COD、高盐含量、难降解的紫外线吸收剂生产废水进行了预处理实验研究。结果表明,Fenton氧化-铁炭内电解组合工艺的处理效果优于单独使用其中一种工艺。当单独使用Fenton氧化和铁炭内电解处理时,COD的去除率最高分别为43.2%和48.6%;而采用两者的组合工艺时,在硫酸亚铁的投加量为0.022 mol/L,m(H2O2)∶m(Fe2+)=5,铁炭投加质量浓度为25 g/L时,COD的去除率可达到76.3%(此时COD<3 500 mg/L),色度达到50倍,为后续进一步处理提供了基础。

关键词: Fenton氧化, 铁炭内电解, 紫外线吸收剂废水

Abstract:

The combined process of Fenton oxidation-iron carbon internal electrolysis has been used for pretreating the wastewater from ultraviolet absorbent production.The experimental research on the treatment of wastewater from ultraviolet absorbent production,which is of higher COD,higher salinity and difficult to be biodegrated,is carried out.The results show that the treatment effectiveness of the combination process of Fenton oxidation and internal electrolysis is superior to any process by using either of them.When Fenton oxidation or iron carbon internal electrolysis is used individually,the highest COD removing rate is 43.2% and 48.6%,respectively.While the combined process is used,the COD removing rate is 76.3%,when the FeSO₄·7H₂O dosage is 0.022 mol/L,m(H₂O₂)∶m(Fe²⁺)=5,and the mass concentration of iron carbon dosages is 25 g/L(this time,the COD is less than 3 500 mg/L),and chromaticity reaches 50 times.Basis established for further treatment of wastewater from ultraviolet absorbent production has been offered.

Key words: Fenton oxidation, iron-carbon internal electrolysis, wastewater from ultraviolet absorbent production

中图分类号: 

• X703.1