MnO<sub>2</sub>催化O<sub>3</sub>处理准好氧矿化垃圾床渗滤液尾水中难降解有机物

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Abstract

A large number of refractory organics residual in semi-aerobic aged refuse biofilter (SAARB) leachate, ozone/manganese-dioxide (O₃/MnO₂) process was used to catalytically decompose organics from SAARB treated landfill leachate. Effects of ozone dosage, MnO₂ dosage and initial pH on the removal of organic substances and reaction kinetics were investigated. UV-Vis and 3D-EEM tests were applied to investigate the transformation mechanism of recalcitrant organics in O₃/MnO₂ process. In addition, the phase change of MnO₂ before and after reaction and its catalytic mechanism were investigated by SEM, EDS, XRD and XPS. Results showed that when the ozone dosage of 18.92mg/min, initial pH of 3 and reaction time of 20min, compared to the ozone alone treatment, the O₃/MnO₂ peroxide treatment was significantly improved with 2mg/L MnO₂ addition. The removal efficiencies of COD, UV₂₅₄, and CN by 24.66%, 4.95%, and 12.57%, respectively, and the chromophore was most easily attacked by ozone. UV-Vis spectra and 3D-EEM spectrum were both illustrated that O₃/MnO₂ process can significantly decrease the aromaticity degree, molecular weight and condensation degree of organic substances in wastewater, which degradation efficiency of benzene ring compounds was improved significantly and also greatly proved biodegradability of leachate effluent. Meanwhile, After O₃/MnO₂ process, MnO₂ has not shown the change of the peak value of the new valence state, and Mn(Ⅳ) played a dominate role in the catalytic process. In order to promote the selectivity of hydroxyl radical and the catalytic performance, indicating that the mechanism of O₃/MnO₂ process was MnO₂ catalyzed O₃ to generate hydroxyl radicals and transformed into hydrated manganese dioxide, which changed the physicochemical properties of the catalyst surface.

Key words： O₃/MnO₂ semi-aerobic aged refuse biofilter UV-Vis 3D-EEM landfill leachate

Received: 13 April 2018

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	Articles by authors
	DENG Yu-nan
	CHEN Wei-ming
	LUO Zi-yin
	CUI Yu-qi
	LI Qi-bin

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DENG Yu-nan,CHEN Wei-ming,LUO Zi-yin等. Removal of refractory organics from SAARB treated landfill leachate by O₃/MnO₂ process[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(11): 4130-4140.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I11/4130

[1]	熊建英,郑正.垃圾填埋场渗滤液溶解性有机质特性及其去除技术综述[J]. 环境化学, 2015,34(1):44-53.
[2]	方芳,刘国强,郭劲松,等.渗滤液中DOM的表征及特性研究[J]. 环境科学, 2009,30(3):834-839.
[3]	李鸿江,赵由才,柴晓利,等.矿化垃圾反应床处理垃圾渗滤液出水中的水溶性有机物[J]. 环境污染与防治, 2008,30(11):4-8.
[4]	何水晶.连续进水条件下准好氧矿化垃圾床处理渗滤液的试验研究[D]. 成都:西南交通大学, 2008.
[5]	Han Z Y, Liu D, Li Q B. A removal mechanism for organics and nitrogen in treating leachate using a semi-aerobic aged refuse biofilter[J]. Journal of Environmental Management, 2013,114(2):336-342.
[6]	Katsoyiannis A I., Canonica S, Ursvon G. Efficiency and energy requirements for the transformation of organic micropollutants by ozone, O3/H2O2 and UV/H2O2[J]. Water Research, 2011,45:3811-3822.
[7]	王春雨,侯永江,刘璇,等.不同晶型二氧化锰催化臭氧化降解亚甲基蓝废水[J]. 环境工程学报, 2017,11(2):908-914.
[8]	竹湘锋.有机废水的催化臭氧氧化研究[D]. 杭州:浙江大学, 2005.
[9]	Andreozzi R,Insola A,The kinetic of Mn(Ⅱ)/Catalyzed Ozonation of Oxalic Acid in Aqueous Solution[J]. Water Research, 1992,17:917-921.
[10]	陈炜鸣,张爱平,李民,等.O3/H2O2降解垃圾渗滤液浓缩液的氧化特性及光谱解析[J]. 中国环境科学, 2017,37(6):2160-2172.
[11]	蒋国斌,寇月,李启彬,等.导气管管径对准好氧生物反应器填埋场碳氮污染物转化的影响[J]. 环境科学学报, 2017,37(4):1427-1435.
[12]	张爱平,李民,陈炜鸣,等.臭氧降解村镇垃圾中转站渗滤液中有机污染物的试验研究[J]. 环境科学学报, 2017,37(2):694-702.
[13]	郑可,周少奇,沙爽,等.臭氧氧化反渗透浓缩垃圾渗滤液动力学[J]. 环境科学, 2011,32(10):2966-2970.
[14]	Qi C, Liu X, Lin C, et al. Activation of peroxymonosulfate by microwave irradiation for degradation of organic contaminants[J]. Chemical Engineering Journal, 2017,315:201-209.
[15]	王兵,税奕瑜,刘璞真,等.臭氧在柱式反应器中的强化传质过程[J]. 环境工程学报, 2017,11(2):760-768.
[16]	郑可.臭氧氧化法处理反渗透浓缩垃圾渗滤液[D]. 广州:华南理工大学, 2012.
[17]	袁建梅,杨德敏.非均相催化臭氧化深度处理钻井废水的效能研究[J]. 工业水处理, 2014,34(8):36-40.
[18]	黄行康.二氧化锰的制备、结构表征及其电化学性能[D]. 厦门:厦门大学, 2007.
[19]	Tizaoui C, Bouselmi L, Mansouri L, et al. Landfill leachate treatment with ozone and ozone/hydrogen peroxide systems[J]. Journal of Hazardous Materials, 2007,140(1/2):316-324.
[20]	Kang K H, Shin H S, Park H. Characterization of humic substances present in landfill leachates with different landfill ages and its implications[J]. Water Research, 2002,36(16):4023-4032.
[21]	崔东宇,何小松,席北斗,等.堆肥腐熟前后胡敏酸与富里酸的还原容量比较[J]. 中国环境科学, 2015,35(7):2087-2094.
[22]	Chen W, Westerhof P, Leenheer J A, et al.Fluorescence excitation-emission matrix regional integration to quantify spectra for dissolved organic matter[J]. Environmental Science & Technology, 2003,37(24):5701-5710.
[23]	贾陈忠,王焰新,张彩香,等.垃圾渗滤液中溶解性有机物组分的三维荧光特性[J]. 光谱学与光谱分析, 2012,32(6):1575-1579.
[24]	He X S, Xi B D, Gao R T, et al. Insight into the composition and degradation potential of dissolved organic matter with different hydrophobicity in landfill leachates[J]. Chemosphere, 2016,144:75-80.
[25]	Andy B, Michael C. Fluorescence of leachates from three contrasting landfills[J]. Water Research, 2004,38:2605-2613.
[26]	Guo J H, Dong Y T, Zhang D Y. Dissolved Silica Adsorbed onto MnO2 in Catalyzing the Decomposition of H2O2:Molecular Structural Rearrangement Revealed by FTIR, SEM-EDX and XRD[J]. Agricultural Science & Technology, 2017,18(10):1912-1915.
[27]	Wang Y, Sun H, Ang H M, et al. Facile synthesis of hierarchically structured magnetic MnO2/Zn Fe2O4 hybrid materials and their performance in heterogeneous activation of peroxy monosul fate[J]. ACS Appl Mater Interfaces, 2014,6(22):19914-19923.
[28]	Jiang J, Zhang X, Sun P, et al. ZnO/BiOI Heterostructures:Photo induced Charge-Transfer Property and Enhanced Visible-Light Photocatalytic Activity[J]. Journal of Physical Chemistry C, 2011, 115(42):20555-20564.
[29]	Xiao W, Wang D, Lou X W. Shape-Controlled Synthesis of MnO2 Nanostructures with Enhanced Electrocatalytic Activity for Oxygen Reduction[J]. Journal of Physical Chemistry C, 2009,114(3):1430-1434.
[30]	Du Y, Ma W, Liu P, et al. Magnetic Co Fe2O4 nanoparticles supported on titanate nanotubes (Co Fe2O4/TNTs) as a novel hetero geneous catalyst for peroxymonosulfate activation and degradation of organic pollutants[J]. Journal of Hazardous Materials, 2016,308:58-66.
[31]	Kang M, Park E D, Kim J M, et al. Simultaneous removal of particulates and NO by the catalytic bag filter containing MnOx catalysts[J]. Korean Journal of Chemical Engineering, 2009,26(1):86-89.
[32]	Yao Y, Cai Y, Wu G, et al. Sulfate radicals induced from peroxymonosulfate by cobalt manganese oxides (Co(x)Mn(3-x)O4) for Fenton-Like reaction in water.[J]. Journal of Hazardous Materials, 2015,296:128.
[33]	Ma J, Graham N J D. Preliminary Investigation of Manganese-Catalyzed Ozonation for the Destruction of Atrazine[J]. Ozone Science & Engineering, 1997,19(3):227-240.
[34]	Meng Y, Song W, Huang H, et al. Structure-property relationship of bifunctional MnO2 nanostructures:highly efficient, ultra-stable electrochemical water oxidation and oxygen reduction reaction catalysts identified in alkaline media[J]. Journal of the American Chemical Society, 2014,136(32):11452-11464.