铁碳微电解协同芬顿氧化降解Cu-EDTA的研究
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- 论文作者：周东方 ; 胡勇有 ; 党亚攀 ; 陈元彩 ; 程建华
- 年：2016
- 作者机构：华南理工大学环境与能源学院工业聚集区污染控制与生态修复教育部重点实验室;
- 论文关键词：微电解 ; 芬顿 ; Cu-EDTA ; 调控策略 ; 氧化降解
- 会议召开时间：2016-12-01
- 会议录名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会论文集
- 语种：中文
- 分类号：X703
- 学会代码：HJKP
- 会议名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会
- 会议地点：中国福建厦门
- 主办单位：中国环境科学学会
- 学会名称：中国环境科学学会
- 页数：9
- 文件大小：1950k
- 原文格式：D
- 会议级别：全国
摘要
微电解(IE)协同芬顿(Fenton)氧化工艺能有效地处理Cu-EDTA类废水。在本文中,采用批式实验探讨了微电解协同芬顿工艺处理Cu-EDTA主要的影响因素的影响规律,提出了基于经验方程和ORP参数的调控策略。结果表明,IEF反应体系不仅能有效去除铜,同时还能降解EDTA。铁屑投加量为30~50 g/L,Fe/C为2:1~4:1,Fe(Ⅱ)/H_2O_2为1:3~1:5和p H为2~4时,有利于IEF体系氧化降解Cu-EDTA。基于经验方程和ORP调控,分别可以在一定范围内有效地调节IE和Fenton工艺中各个运行参数的变化。在铁屑投加量为30g/L,Fe/C为3:1,初始pH为3.0,Fe(Ⅱ)/H_2O_2为1:4以及IE、Fenton反应时间各为20min的最佳优化运行条件下,Cu~(2+)、TOC和EDTA的去除率分别为99.6%、80.3%和83.4%。IEF反应体系氧化降解Cu-EDTA的作用过程是电化学氧化还原、絮凝、吸附共沉淀以及羟基自由基氧化等协同作用,其中Cu-EDTA的降解主要是由羟基自由基的氧化作用去除。
引文
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[2]R.S.Juang,S.W.Wang,Electrolytic recovery of binary metals and EDTA from strong complexed solutions[J].Water Res.34(2000)3179-3185.
[3]H.B.Zeng,S.S.Liu,B.Y.Chai,et al.,Enhanced Photoelectrocatalytic Decomplexation of Cu-EDTA and Cu Recovery by Persulfate Activated by UV and Cathodic Reduction[J].Environmental science&technology(2016).
[4]X.Zhao,L.B.Guo,J.H.Qu,Photoelectrocatalytic oxidation of Cu-EDTA complex and electrodeposition recovery of Cu in a continuous tubular photoelectrochemical reactor[J].Chem.Eng.J.239(2014)53-59.
[5]A.C.Alder,H.Siegrist,W.Gujer,et al.,Behaviour of NTA and EDTA in biological wastewater treatment[J].Water Res.24(1990)733-742.
[6]F.G.Kari,W.Giger,Speciation and fate of ethylenediaminetetraacetate(EDTA)in municipal wastewater treatment[J].Water Res.30(1996)122-134.
[7]M.E.Sillanp??,Distribution and fate of chelating agents in the environment[J].ACS symposium series,Oxford University Press,2005,pp.226-233.
[8]B.N?rtemann,Biodegradation of EDTA[J].Appl.Microbiol.Biotechnol.51(1999)751-759.
[9]H.Zhang,L.J.Xiang,D.B.Zhang,et al.,Treatment of landfill leachate by internal microelectrolysis and sequent Fenton process[J].Desalination and Water Treatment 47(2012)243-248.
[10]C.H.Huang,M.X.Cao,J.H.Luo,et al.,Treatment of Pharmaceutical Wastewater by Micro-Electrolysis and Fenton Oxidation Process[J].Advanced Materials Research,Trans Tech Publ,2012,pp.1622-1625.
[11]S.H.Lan,F.Ju,X.W.Wu,Treatment of wastewater containing EDTA-Cu(II)using the combined process of interior microelectrolysis and Fenton oxidation–coagulation[J].Sep.Purif.Technol.89(2012)117-124.
[12]金洁蓉,铁粉还原-Fenton氧化处理络合铜废水的研究[J].环境工程学报4(2010).
[13]林国俊,铁碳微电解-Fenton氧化处理含镍废水研究[J].环境工程学报33(2015).
[14]鞠峰,铁屑内电解法处理EDTA溶液中络合铜离子[J].环境科学学报31(2011)897-904.
[15]R.F.Yu,H.W.Chen,W.P.Cheng,et al.,Monitoring of ORP,p H and DO in heterogeneous Fenton oxidation using n ZVI as a catalyst for the treatment of azo-dye textile wastewater[J].Journal of the Taiwan Institute of Chemical Engineers 45(2014)947-954.
[16]J.H.Fan,L.M.Ma,The pretreatment by the Fe–Cu process for enhancing biological degradability of the mixed wastewater[J].J.Hazard.Mater.164(2009)1392-1397.
[17]X.Y.Yang,Interior microelectrolysis oxidation of polyester wastewater and its treatment technology[J].J.Hazard.Mater.169(2009)480-485.
[18]L.M.Wu,L.B.Liao,G.C.Lv,et al.,Micro-electrolysis of Cr(VI)in the nanoscale zero-valent iron loaded activated carbon[J].J.Hazard.Mater.254(2013)277-283.
[19]L.Fan,J.R.Ni,Y.J.Wu,et al.,Treatment of bromoamine acid wastewater using combined process of micro-electrolysis and biological aerobic filter[J].J.Hazard.Mater.162(2009)1204-1210.
[20]F.Ju,Y.Y.Hu,Removal of EDTA-chelated copper from aqueous solution by interior microelectrolysis[J].Sep.Purif.Technol.78(2011)33-41.
[21]X.B.Zhang,W.Y.Dong,F.Y.Sun,et al.,Degradation efficiency and mechanism of azo dye RR2 by a novel ozone aerated internal micro-electrolysis filter[J].J.Hazard.Mater.276(2014)77-87.
[22]C.Tizaoui,N.Grima,Kinetics of the ozone oxidation of Reactive Orange 16 azo-dye in aqueous solution[J].Chem.Eng.J.173(2011)463-473.
[23]Y.X.Gao,M.Yang,J.Y.Hu,et al.,Fenton's process for simultaneous removal of TOC and Fe 2+from acidic waste liquor[J].Desalination 160(2004)123-130.
[24]高迎新,张昱,杨敏,Fenton反应中氧化还原电势的变化规律[J].环境化学23(2004)135-139.