| 用H2O2/Fe^3＋处理高浓度含甲醛废水的研究 |
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| 引用本文： | 黄力群,;张杰,;田宁宁,;彭应登.用H2O2/Fe^3＋处理高浓度含甲醛废水的研究[J].环境污染治理技术与设备,2009(7):1274-1278. |
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| 作者姓名： | 黄力群 ;张杰 ;田宁宁 ;彭应登 |
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| 作者单位： | [1]湘潭大学化工学院,湘潭411105; [2]北京市环境科学研究院,北京100037 |
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| 摘 要： | 研究采用H2O2/Fe^3＋催化氧化处理高浓度含甲醛废水,探讨了双氧水和催化剂投加量、反应pH及反应温度等操作条件对处理效果的影响,并通过酸溶解回用失活催化剂。结果表明,较优的操作条件为：H2O2/COD（质量比）=2.2～2.6,Fe^3＋/H2O2（摩尔比）=0.048～0.058,反应pH1.80～2.68,反应温度50℃,反应时间40 min;在上述操作条件下,甲醛去除率达到99%以上,COD去除率达到85%以上。失活的催化剂可通过稀酸溶解后循环使用,其效果与三价铁盐作催化剂的基本相同。采用H2O2/Fe^3＋处理含甲醛废水具有比采用H2O2/Fe^2＋较优的效果。
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| 关 键 词： | H2O2 Fe3+ 类Fenton 甲醛废水处理 |
Treatment of wastewater containing high concentration of formaldehyde with H2O2/Fe^3＋ |
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| Institution: | Huang Liqun, Zhang Jie, Tian Ningning, Peng Yingdeng ( 1. College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China ; 2. Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China) |
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| Abstract: | In this work, hydrogen peroxide and ferric ion were used for the treatment of formaldehyde-containing wastewater. Influence of operating conditions on the treatment efficiency was investigated. The results showed that the optimal operating conditions were as follows： H2O2/COD （wt） = 2.2 -2.6, Fe^3＋/H2O2 （mol） = 0. 048 - 0. 058, pH 1.80 - 2.68, 50 ℃ and 40 min. Under above conditions formaldehyde removal efficiency was over 99% and COD removal efficiency was over 85%. The used catalyst could be regenerated by dissolving it in dilute acid, and the treatment efficiency of the regenerated catalyst was comparable to the ferric salt. The treatment efficiency of formaldehyde-containing wastewater with hydrogen peroxide and ferric ion was better than that with hydrogen peroxide and ferrous ion. |
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| Keywords: | H2O2 Fe^3＋ Fenton-like formaldehyde-containing wastewater treatment |
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