Fenton试剂深度处理脱墨浆废水的反应动力学研究
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摘要
研究了以Fenton试剂为氧化剂,以聚丙烯酰胺(PAM)为絮凝剂对脱墨浆造纸废水氧化絮凝的深度处理方法,并对其氧化机理及动力学进行了分析。通过一系列单因素实验研究结果表明,Fenton氧化过程中各个影响因素对CODCr去除率均有不同的影响,综合比较各个实验结果发现,当体系中FeSO_4投加量为0.5 g/L、n(H_2O_2)∶n(Fe~(2+))=1.5∶1、初始pH值=3.0、反应时间35 min时,氧化絮凝后CODCr去除率达到55.1%。以一级反应动力学方程为模型,对研究中氧化过程进行了多因素的动力学分析。通过多元回归分析模拟得到反应速率常数k的表达式为k=0.273[H_2O_2]-0.067[Fe~(2+)]0.594。
Advanced treatment wastewater from papermaking using deinked pulp as raw material was studied with the oxidation-flocculation method by Fenton's reagent as oxidant and PAM as flocculant,and the oxidation mechanism and kinetics were analyzed. According to the results from a series of single-factor experiments,it was found that the various influence factors in the oxidation process had different effects on CODCrremoval efficiency. From the experimental results,a desirable CODCrremoval rate of 55. 1% was obtained after oxidation-flocculation at FeSO_4 dosage 0. 5 g/L,molar ratio n( H_2O_2)∶n( Fe~(2+)) = 1. 5∶1,initial pH = 3. 0 and reaction time t = 35 min. A multi-factor kinetic of oxidation process analysis was carried out by using first-order model reaction rate constant k was expressed as k = 0. 273[H_2O_2]-0. 067[Fe~(2+)]0. 594 through multiple regression analysis.
Advanced treatment wastewater from papermaking using deinked pulp as raw material was studied with the oxidation-flocculation method by Fenton's reagent as oxidant and PAM as flocculant,and the oxidation mechanism and kinetics were analyzed. According to the results from a series of single-factor experiments,it was found that the various influence factors in the oxidation process had different effects on CODCrremoval efficiency. From the experimental results,a desirable CODCrremoval rate of 55. 1% was obtained after oxidation-flocculation at FeSO_4 dosage 0. 5 g/L,molar ratio n( H_2O_2)∶n( Fe~(2+)) = 1. 5∶1,initial pH = 3. 0 and reaction time t = 35 min. A multi-factor kinetic of oxidation process analysis was carried out by using first-order model reaction rate constant k was expressed as k = 0. 273[H_2O_2]-0. 067[Fe~(2+)]0. 594 through multiple regression analysis.
引文
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[25]He Li.Study on the Treatment of Landfill Leachate By Fenton+Enhanced SBR Method[D].Xi'an:Chang'an University,2013.何丽.Fenton+强化SBR法处理城市垃圾渗滤液的研究[D].西安:长安大学,2013.
[2]Lu X G,Li F,Yan P P,et al.The Removal of Deinking Wastewater Using Neutralization,Activated Carbon,and Hydrogen Peroxide Oxidation[J].Advanced Materials Research,2013,779/780:1547.
[3]Balea A,Monte M C,De l F E,et al.Application of cellulose nanofibers to remove water-based flexographic inks from wastewaters[J].Environmental Science&Pollution Research,2017,24(5):1.
[4]SHI Chang-wei.Treatment of Deinking Wastewater with Coagulation Process[J].China Pulp&Paper,2012,31(2):40.史长伟.混凝沉淀法处理脱墨废水的研究[J].中国造纸,2012,31(2):40.
[5]HUANG Xin,FENG Wen-ying.Research Progress of Natural Biological Degradability of Wastewater[J].Paper and Paper Making,2016,35(5):29.黄馨,冯文英.造纸废水自然生化降解性的研究进展[J].纸和造纸,2016,35(5):29.
[6]MO Li-huan,ZHOU Zhi-ming,WANG Yu-feng.Advanced Treatment of Pulping Effluent by Ultrasonic Strengthened Fenton Process[J].China Pulp&Paper,2012,31(1):23.莫立焕,周志明,王玉峰.超声波强化Fenton试剂深度处理制浆中段废水[J].中国造纸,2012,31(1):23.
[7]Ribeiro M C M,Starling M C V M,Le2o M M D,et al.Textile wastewater reuse after additional treatment by Fenton's reagent[J].Environmental Science&Pollution Research International,2016,24(7):1.
[8]Begum A,Agnihotri P,Mahindrakar A B,et al.Degradation of endosulfan and lindane using Fenton's reagent[J].Applied Water Science,2017,7(1):207.
[9]WU Yanyu,ZHOU Shaoqi,QIN Fanghui,et al.Oxidation and coagulat ion of humic subs tances from landfi ll leachate by Fenton's reagent[J].Journal of the Chemical Industry and Engineering Society of China,2009,60(10):2609.吴彦瑜,周少奇,覃芳慧,等.Fenton试剂对垃圾渗滤液中腐殖质的氧化/混凝作用[J].化工学报,2009,60(10):2609.
[10]Yoon J,Cho S,Cho Y,et al.The characteristics of coagulation of fenton reaction in the removal of landfill leachate organics[J].Water Science&Technology,1998,38(2):209.
[11]Yun W K,Hwang K Y.Effects of reaction conditions on the oxidation efficiency in the Fenton process[J].Water Research,2000,34(10):2786.
[12]Deng Y.Physical and oxidative removal of organics during Fenton treatment of mature municipal landfill leachate.[J].Journal of Hazardous Materials,2007,146(1/2):334.
[13]Fajerwerg K,Debellefontaine H.Wet oxidation of phenol by hydrogen peroxide using heterogeneous catalysis Fe-ZSM-5:a promising catalyst[J].Applied Catalysis B Environmental,1996,10(4):L229.
[14]Centi G,Perathoner S,Torre T,et al.Catalytic wet oxidation with H2O2 of carboxylic acids on homogeneous and heterogeneous Fentontype catalysts[J].Catalysis Today,2000,55(1):61.
[15]Shen Tong.Research on Degradation of Refractory Organics in Heterogeneous Fenton system With Au-Fe[D].Harbin:Harbin Institute of Technology,2013.沈彤.Au-Fe3O4构建的非均相Fenton体系处理难降解有机物的研究[D].哈尔滨:哈尔滨工业大学,2013.
[16]WANG Juan,YANG Zai-fu.Application of Fenton Oxidation Technology in Wastewater Treatment[J].Environmental Science&Technology,2011,34(11):104.王娟,杨再福.Fenton氧化在废水处理中的应用[J].环境科学与技术,2011,34(11):104.
[17]LI Shao-feng,HUANG Jun-li,TAO Hu-chun.Treatment of some reactive dyes by Fenton reagent[J].Journal of Harbin University of Civil Engineering and Architecture,2001,34(5):76.李绍峰,黄君礼,陶虎春.Fenton试剂降解水中活性染料的研究[J].哈尔滨建筑大学学报,2001,34(5):76.
[18]Neyens E,Baeyens J.A review of classic Fenton's peroxidation as an advanced oxidation technique.[J].Journal of Hazardous Materials,2003,98(1/3):33.
[19]Bautista P,Mohedano A F,Gilarranz M A,et al.Application of Fenton oxidation to cosmetic wastewaters treatment.[J].Journal of Hazardous Materials,2007,143(1):128.
[20]ZHAO Deng,ZHANG An-long,LUO Qing,et al.Deep Treatment of Papermaking Wastewater by Fenton-Flocculation Process[J].Paper&Paper Making,2013(3):58.赵登,张安龙,罗清,等.Fenton-絮凝工艺深度处理造纸废水[J].纸和造纸,2013(3):58.
[21]TANG You-min,GUAN Bao-hong,WU Zhong-biao.Mechanism and kinetic of methyldopa removal by Fenton's reagent[J].Environmental Science,2008,29(5):1271.汤优敏,官宝红,吴忠标.Fenton去除废水中甲基多巴的机制及动力学[J].环境科学,2008,29(5):1271.
[22]Guedes A M,Madeira L M,Boaventura R A,et al.Fenton oxidation of cork cooking wastewater—overall kinetic analysis[J].Water Research,2003,37(13):3061.
[23]ZHA Fugeng,ZHANG Mingxu,XU Meijuan.Optimization and kinetic study of Fenton process for treatment of landfill leachate[J].Chinese Journal of Environmental Engineering,2014(7):2837.查甫更,张明旭,徐美娟.Fenton法处理垃圾渗滤液的参数优化及反应动力学模型[J].环境工程学报,2014(7):2837.
[24]QI Peishi,ZHAO Junjie,LIU Yunzhi,et al.Kinetics of advanced treatment of high-viscosity petrochemical wastewater with oxidation by Fenton's reagent[J].Ciesc Journal,2011(2):490.祁佩时,赵俊杰,刘云芝,等.Fenton试剂深度处理稠油石化废水的反应动力学[J].化工学报,2011(2):490.
[25]He Li.Study on the Treatment of Landfill Leachate By Fenton+Enhanced SBR Method[D].Xi'an:Chang'an University,2013.何丽.Fenton+强化SBR法处理城市垃圾渗滤液的研究[D].西安:长安大学,2013.