三维电极电Fenton氧化法处理染料废水
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摘要
采用三维电极电Fenton氧化法处理实际染料废水,探究了染料废水处理效果的影响因素。实验结果表明:以钌铱镀层钛电极为阳极、不锈钢板为阴极、粉末活性炭为颗粒电极,在粉末活性炭投加量为2.0 g/L、电流密度为0.5 mA/mm2、极板间距为3 cm、pH为2.0、硫酸亚铁投加量为0.50 g/L的最优工艺条件下,反应2 h后COD、TOC、氨氮、色度的去除率达到最大,分别为62.80%、41.15%、42.48%和95.00%;粉末活性炭作为颗粒电极可使染料废水COD去除率提高18个百分点;重复使用10次的处理效果与第2次基本持平。
The actual dye wastewater was treated by electro-Fenton oxidation process with three-dimensional electrode,and the factors affecting the treatment effect were explored. The experimental results showed that:When the titanium electrode with ruthenium-iridium plating was used as anode,the stainless steel plate was used as cathode,and powdered activated carbon(PAC)was used as particle electrode,the maximum removal rate of COD,TOC,ammonia nitrogen and chroma were 62.80%,41.15%,42.48% and 95.00% respectively under the optimal conditions of PAC dosage 2.0 g/L,current density 0.5 mA/mm2,plate spacing 3 cm,p H 2.0,ferrous sulfate dosage 0.50 g/L and reaction time 2 h;PAC as a particle electrode can increase the COD removal rate of the dye wastewater by 18 percentage points;and the treatment effect of 10-time reused PAC was basically the same as that of the second-time reused PAC.
The actual dye wastewater was treated by electro-Fenton oxidation process with three-dimensional electrode,and the factors affecting the treatment effect were explored. The experimental results showed that:When the titanium electrode with ruthenium-iridium plating was used as anode,the stainless steel plate was used as cathode,and powdered activated carbon(PAC)was used as particle electrode,the maximum removal rate of COD,TOC,ammonia nitrogen and chroma were 62.80%,41.15%,42.48% and 95.00% respectively under the optimal conditions of PAC dosage 2.0 g/L,current density 0.5 mA/mm2,plate spacing 3 cm,p H 2.0,ferrous sulfate dosage 0.50 g/L and reaction time 2 h;PAC as a particle electrode can increase the COD removal rate of the dye wastewater by 18 percentage points;and the treatment effect of 10-time reused PAC was basically the same as that of the second-time reused PAC.
引文
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[16]周键,王三反.单极性三维电极电解处理含钴废水[J].化工环保,2014,34(5):438-442.
[17]THIRUGNANASAMBANDHAM K,SIVAKUMARV,MARAN J P.Response surface modelling and optimization of treatment of meat industry wastewater using electrochemical treatment method[J].J Taiwan Inst Chem Eng,2015,46:160-167.
[18]张显峰,王德军,赵朝成,等.三维电极电催化氧化法处理废水的研究进展[J].化工环保,2016,36(3):250-255.
[2]ZHENG T L,WANG Q H,SHI Z N,et al.Advanced treatment of wet-spun acrylic fiber manufacturing wastewater using three-dimensional electrochemical oxidation[J].J Environ Sci,2016,50:21-31.
[3]LI X Y,XU J,CHENG J P,et al.TiO2-SiO2/GACparticles for enhanced electrocatalytic removal of acid orange 7(AO7)dyeing wastewater in a three-dimensional electrochemical reactor[J].Sep Purif Technol,2017,187:303-310.
[4]周抗寒,周定.复极性固定床电解槽内电极电位的分布[J].环境化学,1994,13(4):318-322.
[5]周抗寒,周定.用涂膜活性炭提高复极性电解槽电解效率[J].环境科学,1994,15(2):38-40.
[6]JUNG K W,HWANG M J,PARK D S,et al.Performance evaluation and optimization of a fluidized three-dimensional electrode reactor combining pre-exposed granular activated carbon as a moving particle electrode for greywater treatment[J].Sep Purif Technol,2015,156:414-423.
[7]CHU H Q,WANG Z,LIU Y.Application of modified bentonite granulated electrodes for advanced treatment of pulp and paper mill wastewater in three-dimensional electrode system[J].J Environ Chem Eng,2016,4(2),1810-1817.
[8]DOMINI C E,HIDALGO M,MARKEN F,et al.Comparison of three optimized digestion methods for rapid determination of chemical oxygen demand:closed microwaves,open microwaves and ultrasound irradiation[J].Anal Chim Acta,2006,561(1/2):210-217.
[9]北京市化工研究院.化学需氧量的测定重铬酸盐法:GB 11914-1989[S].北京:中国标准出版社,1989.
[10]中国纺织大学.水质色度的测定:GB 11903-1989[S].北京:中国标准出版社,1989.
[11]沈阳市环境监测中心站.水质氨氮的测定:HJ 535-2009[S].北京:中国环境科学出版社,2009.
[12]赵泽华,张后虎,许彬,等.三维电催化氧化技术处理草铵膦农药废水[J].环境工程学报,2017,11(1):93-97.
[13]KURT U,APAYDIN O,GONULLU M T.Reduction of COD in wastewater from an organized tannery industrial region by electro-Fenton process[J].J Hazard Mater,2007,143(1/2):33-40.
[14]YU F K,ZHOU M H,YU X M.Cost-effective electro-Fenton using modified graphite felt that dramatically enhanced on H2O2 electro-generation without external aeration[J].Electrochim Acta,2015,163:182-189.
[15]WANG C,HUANG Y K,ZHAO Q,et al.Treatment of secondary effluent using a three-dimensional electrode system:COD removal,biotoxicity assessment,and disinfection effects[J].Chem Eng J,2014,243:1-6.
[16]周键,王三反.单极性三维电极电解处理含钴废水[J].化工环保,2014,34(5):438-442.
[17]THIRUGNANASAMBANDHAM K,SIVAKUMARV,MARAN J P.Response surface modelling and optimization of treatment of meat industry wastewater using electrochemical treatment method[J].J Taiwan Inst Chem Eng,2015,46:160-167.
[18]张显峰,王德军,赵朝成,等.三维电极电催化氧化法处理废水的研究进展[J].化工环保,2016,36(3):250-255.
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