双阳极电Fenton法处理纺织印染废水
The treatment of textile-dyeing wastewater by double anode electro-Fenton process
姜跃 1曾慧卿 1徐莹 1夏波 1冯斐1
作者信息
- 1. 南昌大学资源与环境学院,江西 南昌 330031
- 折叠
摘要
针对传统工艺处理纺织印染废水效率低、成本高等问题,研究了采用双阳极电Fenton法处理纺织印染废水的工艺条件,以江西省某纺织印染企业之废水为研究对象,通过单因素控制变量法,分析各因素对其处理效果的影响.结果表明:在柱状活性炭(Ф=4 mm)投加量为400 g/L,电解电压为10 V,H2O2:Fe2+(摩尔比)为20:1,FeSO4·7H2O投加量为1.6 g/L,电解质(NaCl)投加量为1 g/L的条件下,双阳极电Fenton体系的处理效果最佳,反应3 h后,COD去除率为90.46%,色度去除率为98.99%,UV254去除率为98.85%.将铁泥作为双阳极电Fenton体系之铁源,在pH为2,投加量为1.46 g/L,其他条件相同,COD去除率为90.05%,色度去除率为98.17%,UV254去除率为98.28%.双阳极电Fenton体系能够有效处理纺织染料废水,对废水的色度、UV254和COD均有较高的去除率,铁泥作为铁源构建双阳极电Fenton体系为铁泥资源化利用提供了一个新的选择.
Abstract
Aimed at the problems of low efficiency and high cost of conventional treatment of textile-dyeing wastewater,the process conditions of double anode electro-Fenton method were studied.This paper,taking a textile-dyeing wastewater of dyeing enterprises in Jiangxi Province as the research object,through single factor control variable method to analyze the influence of each factor on its treatment effect.The results showed that:the double anode electro-Fenton process achieved the best treatment effect under the conditions of amount of column carbon(Ф=4 mm)was 400 g/L,electrolysis voltage of 10 V,H2O2:Fe2+(molar ratio)of 20:1,FeSO4·7H2O dosage of 1.6 g/L and electrolyte(NaCl)dosage of 1 g/L.After 3 hours of reaction the removal rate of COD was 90.46%,the removal rate of color was 98.99%,and the removal rate of UV254 was 98.85%.Iron sludge was used as the iron source for double anode electro-Fenton system,and under the conditions of pH=2 and iron sludge dosage of 1.46 g/L and other conditions unchanged,the removal rate of COD was 90.05%,the removal rate of color was 98.17%,and the removal rate of UV254 was 98.28%.Double anode electro-Fenton method can effectively treat textile-dyeing wastewater,and has a higher removal rate of UV254,chroma and COD.Using iron sludge as the iron source for double anode electro-Fenton process presents a new alternative for the reusability of iron sludge.
关键词
纺织印染废水/双阳极电Fenton/铁泥回用Key words
textile-dyeing wastewater/double anode electro-Fenton/iron sludge reuse引用本文复制引用
出版年
2024
NETL
NSTL
万方数据