摘要
采用异相类Fenton反应处理染料废水,并以均相Fenton反应为对照,考察废水初始p H值、催化剂投加量、H2O2投加浓度和反应时间对处理效果的影响,测定了反应过程中铁离子和剩余H2O2浓度的变化情况。结果表明,对于试验用实际染料废水,均相Fenton反应适宜的p H范围为3～8,七水合硫酸亚铁投加量为2 g/L,H2O2投加浓度为20 mmol/L,反应时间为2 h时,COD去除率与色度去除率最高能达到59.39%和97.71%;异相类Fenton反应在废水初始p H=3时处理效果最佳,黄铜矿投加量为9 g/L,H2O2投加浓度为20 mmol/L,反应时间4 h时,COD去除率与色度去除率分别为56.03%和93.79%。均相和异相类Fenton反应处理染料废水过程中生成的·OH能降解有机污染物。
The dyeing wastewater was treate by Fenton-like oxidation to investigate the effects of wastewater initial p H,catalyst dosage,H_2O_2 dosage and reaction time by contrasting with that of Fenton reaction. And the variation of iron concentration and H_2O_2 dosage in Fenton and Fenton-like process were also explored. Experimental results showed that under condtions of the p H range of Fenton oxidation from 3 to 8,at ferrous sulfate dosage of 2 g/L,H_2O_2 dosage of 20 mmol/L and reaction time 2 h,COD removal is 59. 39% and decolorization is 97. 71% in Fenton reaction. At chalcopyrite dosage of 9 g/L,H_2O_2 dosage of 20 mmol/L,p H = 3 and reaction time 4 h,COD removal is 56. 03% and decolorization is 93. 79% in Fenton-like reaction. It was also found that the · OH ion which is generated by Fenton and Fenton-like reaction in treating the dyeing wastewater could degradate organic pollutants.
出处
《金属矿山》
CAS
北大核心
2016年第11期167-172,共6页
Metal Mine
基金
国家自然科学基金资助项目(编号:21277023)
作者简介
邓东升（1993-），女，硕士研究生。
通讯作者陈泉源（1962-），男，教授，博士研究生导师。
