催化铁内电解法处理印染废水的研究
|
摘要
利用催化铁内电解法对酸性品红模拟印染废水进行处理,采用循环伏安法评价了酸性品红在铜电极和石墨电极上的电化学特性,结果表明催化铁内电解法与传统铁炭内电解法降解污染物的反应机理不同,通过对比发现,催化铁内电解法可以明显改善铁炭内电解法在碱性条件下的处理效果。单因素实验结果表明,进水pH为3,反应时间为1.5 h,铁铜质量比为6,不加入电解质时,对144 mg/L酸性品红模拟废水去除率能达到97.7%。废水中存在电解质时,可提高处理效果,去除率能达到99.5%;废水中加入过量铁铜填料对处理效果的改善并不明显。
The catalyzed iron inner electrolysis process has been used for treating acid fuchsin simulated dyeing wastewater,and the electro-chemical characteristics of acid fuchsin on copper electrode and graphite electrode are evaluated by cyclic voltammetry. The results show that the reaction mechanisms of catalyzed iron inner electrolysis process and traditional iron inner electrolysis process for the degradation of pollutants are different. It is found that the catalytic iron inner electrolysis process can obviously improve the treatment effect of iron carbon inner electrolysis process under alkaline conditions. It is found through single-factor experiments that when influent pH is 3,reaction time 1.5 h,mass ratio of iron-copper 6,and without adding electrolyte,the removing rate of acid fuchsin simulated wastewater, whose mass concentration is 144 mg/L,can reach 97.7%. The existence of electrolyte in wastewater can improve the treatment effect and,as a result,the removing rate can reach 99.5%. Adding excessive iron copper fillings to the wastewater does not have obvious improvement in treatment effects.
The catalyzed iron inner electrolysis process has been used for treating acid fuchsin simulated dyeing wastewater,and the electro-chemical characteristics of acid fuchsin on copper electrode and graphite electrode are evaluated by cyclic voltammetry. The results show that the reaction mechanisms of catalyzed iron inner electrolysis process and traditional iron inner electrolysis process for the degradation of pollutants are different. It is found that the catalytic iron inner electrolysis process can obviously improve the treatment effect of iron carbon inner electrolysis process under alkaline conditions. It is found through single-factor experiments that when influent pH is 3,reaction time 1.5 h,mass ratio of iron-copper 6,and without adding electrolyte,the removing rate of acid fuchsin simulated wastewater, whose mass concentration is 144 mg/L,can reach 97.7%. The existence of electrolyte in wastewater can improve the treatment effect and,as a result,the removing rate can reach 99.5%. Adding excessive iron copper fillings to the wastewater does not have obvious improvement in treatment effects.
引文
[1]Stolz A.Basic and applied aspects in the microbial degradation of azo dyes[J].Applied Microbiology and Biotechnology,2001,56(1):69-80.
[2]徐文英,周荣丰,马鲁铭,等.催化铁内电解处理难降解废水的方法:中国,1167627[P].2004-09-22.
[3]何为,唐先忠,王守绪,等.线性扫描伏安法与循环伏安法实验技术[J].实验科学与技术,2005,3(增刊1):126-128.
[2]徐文英,周荣丰,马鲁铭,等.催化铁内电解处理难降解废水的方法:中国,1167627[P].2004-09-22.
[3]何为,唐先忠,王守绪,等.线性扫描伏安法与循环伏安法实验技术[J].实验科学与技术,2005,3(增刊1):126-128.