Industrial Water Treatment. Study status and development trends in the wastewater treatment by electro-fenton method

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1 Industrial Water Treatment Vol.29 No.10 Oct Fenton ( ; ) [ ] -Fenton -Fenton [ ] -Fenton; ; [ ] X703.1 [ ] A [ ] X(2009) Study status and development trends in the wastewater treatment by electro-fenton method Ban Fuchen 12 Liu Jiongtian 1 Cheng Lin 2 Zhang Peize 2 (1. School of Resources & Civil Engineering Northeastern University Shenyang China; 2. School of Municipal and Environmental Engineering Shenyang Jianzhu University Shenyang China) Abstract: Various types of electro-fenton methods and the present status of their application to water treatment in China and abroad are summarized. It is pointed out that electro-fenton method is suitable for treating highly concentrated and toxic wastewater. This kind of treatment is rapid economic and highly efficient. Its existing problems and development trends are put forward laying a foundation for its advanced study. Key words: electro-fenton; refractory wastewater; hydroxyl free radicals Fenton 1 -Fenton EF-Fe 3+ (FeRe) Fenton H 2 O 2 Fe 2+ Fe 2+ EF-FeRe ph <2.5 4 Fenton FeRe Fenton Fe 2+ H 2 O 2 Fe 2+ Fenton : Fenton -Fenton ; 1.2 EF-H 2 O 2 -FeO x Fenton EF-H 2 O 2 -FeO x -Fenton(EF) H 2 O 2 Fe 2+ EF 5-6 EF-FeRe H 2 O 2 Fe 2+ EF- H 2 O 2 [ ] (2009A600); ( ) 1

2 (10) Fe 2+ H 2 O 2 COD >80% Fenton 98%; Fe 2+ H 2 O 2 Fe EF-H 2 O 2 -FeRe COD >80% EF-H 2 O 2 -FeRe H 2 O 2 Fenton Fe 2+ H 2 O 2 Fe 2+ Fenton HO Fe 3+ Fe 3+ : Fe 2+ Fe 2+ H 2 O 2 COD >80% 95% Fenton 1.17 /m 3 M. Panizza 10 H 2 O 2 Fe 2+ H 2 O 2 Fe 2+ COD mg/l Fe 2+ 3 mmol/l 1.4 UV-EF UV-EF Fenton CO EF H 2 O Fe 2+ UV Fe 3+ Fe 3+ ph 2.2 Fe (OH ) 2 + Fe (OH) 2+ UV Fe 2+ HO H 2 O 2 Y. Hsiao 12 Fe 2+ H 2 O 2 Pt 1.5 Fenton (FSR) Fenton Fe 3+ FSR Fe 2+ H 2 O 2 Fenton Fe 3+ Fenton Fe FSR Fenton EF Fe 3+ Fe 2+ HO COD TOC Fenton Fe H 2 O 2 H 2 O H 2 O 2 EF HO FSR Fe 2+ H 2 O 2 ph 1 6~9 2 EF h COD 87% 89% E. Guivarch 11 EF-H 2 O 2 -FeRe (RVC) Fe 3+ O 2 ma/cm 2 5 V > 98%COD >70% EF EF 2

3 (10) : -Fenton H 2 O 2 Fe 2+ Fenton Fenton B. Enric 15 ph=3 Fe 2+ H 2 O 2 TiO min A/m 2 -Fenton 2.5 Shanshan Chou Fenton EF Fe 2 (SO 4 ) 3 Fe(OH) 3 Fe 2+ COD 91% 93% Fenton Y. Hsiao Fe 2+ H 2 O 2 EF Fe mmol/l Fenton H 2 O 2 phph 6.6 ma/cm 2 17 H 2 O min 94% 10 V EF 57 A/m 2 Fenton : 1 h COD >90% 95% COD 800 mg/l COD Fe(OH) % 82.8% 18 IrO 2 /Ta 2 O 5 Fe 2+ Fenton V( ) V( / )= V COD 84% 0.10 m 3 /h Fe mg/l 90 min COD Fenton >90% 50% E. Brillas EF -Fenton (1)EF M. A. Oturan 23 EF HO : ph >90% EF : %~70% Fe (24-D) I= (2) EF 100 ma 240 min2 4-D TOC 76% Fenton EF B. Boye 24 EF ph=3.0 E. Brillas 25 EF-FeRe 4- (3) 26 EF HO H 2 O 2 3

4 (10) [4] (12):1-3. HO H 2 O 2 [5] Brillas ECalpe J CCasado J. Mineralization of 24 -D by advanced electrochemical oxidation processes [J]. Water Res.2000 Fe 2+ H 2 O 2 34(8): H 2 O 2 [6] EF (6): H 2 O 2 EF HO H 2 O 2 [8] (4) Fe 2+ (2): EF ; Fe 2+ (1): Fe 2+ a packed bed flow reactor with electrogenerated Fenton s reagent [J]. Journal of Applied Electrochemistry199323(9): EF EF [J] (5): :(1) EF [14] (3): EF [15] Enric B Eva M Roser S et al. Aniline degradation under electrochemical and photocatalytic conditions[j]. Advanced Oxidation HO ;(2) ( Fe 2+ ) Technology19994(1): EF [16] Chou ShanshanHuang Yaohui Lee Shennanet al. Treatment of ;(3) high strength hexamine-containing wastewater by electro -Fenton method[j].water Res (3): H 2 O 2 ; [J] (4): (4) H 2 O 2 EF ;(5) [J] (3): Fenton [19] Oturan M APeiroten J Chartrin P et al. Complete destruction of p-nitrophenol in aqueous medium by electro-fenton method[j]. [ ] [1] Gallard Hde Laat JLegube B. Influence du ph sur la vitesse d'oxydation de composes organiques par Fe /H 2O 2 Mecanismes reactionnels et modilications[j]. New Journal of Chemistry (3): [2] Kang Y WHwang K Y. Effect of reaction conditions on the oxidation efficiency in the Fenton process[j]. Water Res (10): [J] (2): [3]. -Fenton [J] (5): Fenton [J].. [J]. [7]. [J] (1): [J] (3): [9]. Fenton [J]. : [10] Panizza MCerisola G. Removal of organic pollutants from industrial wastewater by electrogenerated Fenton s reagent [J].Water Res (16): [11] Guivarch E Trevin SLahitte C. Degradation of azo dyes in water by electron-fenton process[j]. Environ. Chem. Lett [12] Hsiao Y Nobe K. Hydroxylation of chlorobenzene and phenol in [13]. Electro-Fenton. [J]. [17]. Fenton [18]. IrO 2/Ta 2O 5- Fenton Environmental Science and Technology200034(16): [20] Oturan M A Oturan N Lahitte C et al. Production of hydroxyl radicals by electrochemically assisted Fenton s reagent application to the mineralization of an organic micropollutant pentachlorophenol[j]. Journal of Electroanalytical Chemistry (1): [21]. Fenton [J] (5): [22]. -Fenton [23] Oturan M A. An ecologically effective water treatment technique using electrochemically generated hydroxyl radicals for in situ 4

5 Industrial Water Treatment Vol.29 No.10 Οct.2009 ( ) [ ] DSA [ ] ; ; [ ] X703.1 [ ] A [ ] X(2009) Development of the research on the application of electro-flotation technology to the treatment of oil-bearing wastewater Li Zhijian Fu Zhenghui (College of Resource and EnvironmentShaanxi University of Science & Technology Xi an China) Abstract: The mechanisms of electro-floatation and its technological characteristics and applications to the treatment of oil-bearing wastewater are briefly discussed. Recent investigations on the effects of the influential factors plate materials energy consumption and processing units of electro-floatation are reviewed and the application foreground of DSA electrode and high-frequency pulse power supply to electro-floatation technology is introduced. Its feasibility in oil-bearing wastewater treatment is discussed and some problems existing and the development trend of electro-floatation technology are indicated. Key words: electroflotation; oil-bearing wastewater; dimension stable anode 1 destruction of organic pollutants:application to herbicide 24-D [J]. Journal of Applied Electrochemistry (4): [24] Boye B Brillas E Deign M M. Electrochemical degradation of the herbicide 4-chloro-2 -methylphenoxyacetic acid in aqueous medium by peroxi-coagulation and photoperoxi-coagulation [J]. Journal of Electroanalytical Chemistry200354(4): [25] Brillas E Sauleda R Casado J. Degradation of 4-chlorophenol by anodic oxidation electro-fenton photoelectro-fenton and peroxi-coagulation processes[j]. Electrochem. Soc (3): [26]. -Fenton [ ] (1976 )2007 : banfc@163.com. -Fenton [J]. [ ] ( ) [J] (6): [27] (4): [28]. [J] (9): [29]. -Fenton [J]. : 20047(4): [30]. -Fenton [J] (6): [31]. -Fenton [J] (12):

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