二次飞灰理化特性及其Pb和Cu赋存形态
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摘要
利用高温管式电炉,分别收集了1000, 1150和1250℃条件下的二次飞灰,并利用XRF、EDX、XRD等手段对二次飞灰的理化特性及其重金属Pb和Cu的赋存形态进行了分析.结果表明:二次飞灰主要由重金属氯化物组成,重金属Pb和Cu的质量百分比分别为8.92%～10.11%和3.74%～5.73%;二次飞灰微观形貌分为不规则形状聚合体和多孔团絮集合体2种;二次飞灰极易吸潮,干燥的二次飞灰呈棕黄色,吸潮后逐渐变为黄色,最后变为糊状的蓝色浆体.
The physicochemical properties of the second fly ash and its speciation of Pb and Cu were analyzed by using XRF, EDX,XRD on samples of second fly ashes collected under temperature of 1000, 1150 and 1250℃ from high temperature rube furnaces.The results show that second fly ash was mainly composed of heavy metal chloride, and the mass percentages of heavy metals of Pb and Cu were 8.92%～10.11% and 3.74%～5.73%, respectively. The microscopic morphology of second fly ash was irregular shaped polymer and porous cluster flocculation. The second fly ash could absorb moisture easily. The dry second fly ash was brownish-yellow originally, gradually became yellow after absorbing moisture, and finally turned into a paste of blue slurry.
The physicochemical properties of the second fly ash and its speciation of Pb and Cu were analyzed by using XRF, EDX,XRD on samples of second fly ashes collected under temperature of 1000, 1150 and 1250℃ from high temperature rube furnaces.The results show that second fly ash was mainly composed of heavy metal chloride, and the mass percentages of heavy metals of Pb and Cu were 8.92%～10.11% and 3.74%～5.73%, respectively. The microscopic morphology of second fly ash was irregular shaped polymer and porous cluster flocculation. The second fly ash could absorb moisture easily. The dry second fly ash was brownish-yellow originally, gradually became yellow after absorbing moisture, and finally turned into a paste of blue slurry.
引文
[1]Meawad A S,Bojinova D Y,Pelovski Y G.An overview of metals recovery from thermal power plant solid wastes[J].Waste Management,2010,30(12):2548-2559.
[2]李建陶,曾鸣,杜兵,等.垃圾焚烧飞灰药剂稳定化矿物学特[J].中国环境科学,2017,37(11):4188-4194.Li J T,Zeng M,Du B,et al.Mineralogical characteristics of MSWI fly ash stabilized by chemical reagents[J].China Enviromental Science,2017,37(11):4188-4194.
[3]宗达,蔡云舒,唐武,等.垃圾焚烧飞灰处置及资源化利用技术进展[C].北京:中国环境科学学会学术年会,2016.Zong D,Cai Y S,Tang W,et al.Technical progress of disposal and utilization of fly ash from MSW incineration[C].Beijing:China academic journal Electronic publishing house,2016.
[4]熊祖鸿,范根育,鲁敏,等.垃圾焚烧飞灰处置技术研究进展[J].化工进展,2013,32(7):1678-1684.Xiong Z H,Fan G Y,Lu M,et al.Treatment technologies of municipal solid waste incinerator fly ash:A review[J].Chemical Industry and Engineering Progress,2013,32(7):1678-1684.
[5]Feng H W,Fan Z,Ya J C,et al.A comparative study on the heavy metal solidification/stabilization performance of four chemical solidifying agents in municipal solid waste incineration fly ash[J].Journal of Hazardous Materials,2015,300:451-458.
[6]李润东,聂永丰,李爱民,等.垃圾焚烧飞灰熔融过程二噁英分解特性[J].化工学报,2004,55(4):668-672.Li R D,Nie Y F,Li A M,et al.Decomposition characteristics of PCDD/Fs During melting process of municipal solid waste incinerator fly ash[J].Journal of Chemical Industry and Engineering,2004,55(4):668-672.
[7]王琪,田书磊,汪群慧,等.Ca Cl2对垃圾焚烧飞灰热处理特性的影响[J].环境科学研究,2006,19(5):180-183.Wang Q,Tian S L,Wang Q H,et al.The effect of CaCl2 on the heat treatment of MSWI fly ash[J].Research of Environmental Sciences,2006,19(5):180-183.
[8]Fraissler G,J?ller M,Brunner T,et al.Influence of dry and humid gaseous atmosphere on the thermal decomposition of calcium chloride and its impact on the remove of heavy metals by chlorination[J].Chemical Engineering&Processing Process Intensification,2009,48(1):380-388.
[9]Nowak B,Pessl A,Aschenbrenner P,et al.Heavy metal removal from municipal solid waste fly ash by chlorination and thermal treatment[J].Journal of Hazardous Materials,2010,179(1):323-331.
[10]胡小英,田书磊,闫大海,等.氯化剂对垃圾焚烧飞灰中重金属挥发特性的影响[J].中国环境科学,2008,28(7):614-619.Hu X Y,Tian S L,Yan D H,et al.The effect of chlorination agents on the volatilization of heavy metals in fly ash from municipal solid waste incinerator[J].China Enviromental Science,2008,28(7):614-619.
[11]田书磊.垃圾焚烧飞灰重金属热分离工艺及挥发特性研究[D].哈尔滨:哈尔滨工业大学,2007.Tian S L.Thermal-separation process and evaporation mechanism of heavy metal from MSWI fly ash[D].Harbin:Harbin Institute of Technology,2007.
[12]蒋旭光,常威.生活垃圾焚烧飞灰的处置及应用概况[J].浙江工业大学学报,2015,43(1):7-17.Jang X G,Chang W.Review for treatment and application of municipal solid waste incineration fly ash[J].Journal of Zhejiang University of Technology,2015,43(1):7-17.
[13]Sakai S I,Hiraoka M.Municipal solid waste incinerator residue recycling by thermal processes[J].Waste Management,2000,20(2):249-258.
[14]Nishida K,Nagayoshi Y,Ota H,et al.Melting and stone production using MSW incinerated ash[J].Waste Management,2001,21(5):443-449.
[15]Dong J,Chi Y,Tang Y,et al.Partitioning of heavy metals in municipal solid waste pyrolysis,gasification,and incineration[J].Energy&Fuels,2015,29(11):151-209.
[16]文娟.垃圾焚烧飞灰熔融分离过程烟气中重金属迁移规律研究[D].重庆:重庆大学,2008.Wen J.Study on migration of heavy metals of municipal waste incineration fly ash in melting process[D].Chongqing:Chongqing University,2008.
[17]Chang C Y.Behavior of materials under the conditions of roasting MSW incinerator fly ash with chlorinating agents[J].Journal of Hazardous Materials,1999,64(1):75-89.
[18]Jakob A,Stucki S,Kuhn P.Evaporation of heavy metals during the heat treatment of municipal solid waste incinerator fly ash[J].Environmental Science&Technology,1995,29(9):2429-2436.
[19]Gong B,Deng Y,Yang Y,et al.Effects of microwave-assisted thermal treatment on the fate of heavy metals in MSWI fly ash[J].Energy&Fuels,2017,31(11):78-85.
[20]Fujimori T,Takaoka M,Takeda N.Influence of Cu,Fe,Pb,and Zn chlorides and oxides on formation of chlorinated aromatic compounds in MSWI fly ash[J].Environmental Science&Technology,2009,43(21):8053-8059.
[21]曾蒙秀,宋友桂.基于麦夸特算法的X射线衍射物相定量分析的影响因素研究[J].岩矿测试,2012,31(5):798-806.Zeng M X,Song Y G.Study on the influencing factors of the levenberg-marquardt algorithm for X-ray diffraction quantita[J].Rock and Mineral Analysis,2012,31(5):798-806.
[22]Tian S L,Yu M J,Wei W,et al.Investigating the speciation of copper in secondary fly ash by X-ray absorption spectroscopy[J].Environmental Science&Technology,2009,43(24):9084-9088.
[23]Tian S L,Zhu Y C,Meng B B,et al.Chemical speciation of lead in secondary fly ash using X-ray absorption spectroscopy[J].Chemosphere,2018,197:362-366.
[24]Chan C,Jia C Q,Graydon J W,et al.The behaviour of selected heavy metals in MSW incineration electrostatic precipitator ash during roasting with chlorination agents[J].Journal of Hazardous Materials,1996,50(1):1-13.
[2]李建陶,曾鸣,杜兵,等.垃圾焚烧飞灰药剂稳定化矿物学特[J].中国环境科学,2017,37(11):4188-4194.Li J T,Zeng M,Du B,et al.Mineralogical characteristics of MSWI fly ash stabilized by chemical reagents[J].China Enviromental Science,2017,37(11):4188-4194.
[3]宗达,蔡云舒,唐武,等.垃圾焚烧飞灰处置及资源化利用技术进展[C].北京:中国环境科学学会学术年会,2016.Zong D,Cai Y S,Tang W,et al.Technical progress of disposal and utilization of fly ash from MSW incineration[C].Beijing:China academic journal Electronic publishing house,2016.
[4]熊祖鸿,范根育,鲁敏,等.垃圾焚烧飞灰处置技术研究进展[J].化工进展,2013,32(7):1678-1684.Xiong Z H,Fan G Y,Lu M,et al.Treatment technologies of municipal solid waste incinerator fly ash:A review[J].Chemical Industry and Engineering Progress,2013,32(7):1678-1684.
[5]Feng H W,Fan Z,Ya J C,et al.A comparative study on the heavy metal solidification/stabilization performance of four chemical solidifying agents in municipal solid waste incineration fly ash[J].Journal of Hazardous Materials,2015,300:451-458.
[6]李润东,聂永丰,李爱民,等.垃圾焚烧飞灰熔融过程二噁英分解特性[J].化工学报,2004,55(4):668-672.Li R D,Nie Y F,Li A M,et al.Decomposition characteristics of PCDD/Fs During melting process of municipal solid waste incinerator fly ash[J].Journal of Chemical Industry and Engineering,2004,55(4):668-672.
[7]王琪,田书磊,汪群慧,等.Ca Cl2对垃圾焚烧飞灰热处理特性的影响[J].环境科学研究,2006,19(5):180-183.Wang Q,Tian S L,Wang Q H,et al.The effect of CaCl2 on the heat treatment of MSWI fly ash[J].Research of Environmental Sciences,2006,19(5):180-183.
[8]Fraissler G,J?ller M,Brunner T,et al.Influence of dry and humid gaseous atmosphere on the thermal decomposition of calcium chloride and its impact on the remove of heavy metals by chlorination[J].Chemical Engineering&Processing Process Intensification,2009,48(1):380-388.
[9]Nowak B,Pessl A,Aschenbrenner P,et al.Heavy metal removal from municipal solid waste fly ash by chlorination and thermal treatment[J].Journal of Hazardous Materials,2010,179(1):323-331.
[10]胡小英,田书磊,闫大海,等.氯化剂对垃圾焚烧飞灰中重金属挥发特性的影响[J].中国环境科学,2008,28(7):614-619.Hu X Y,Tian S L,Yan D H,et al.The effect of chlorination agents on the volatilization of heavy metals in fly ash from municipal solid waste incinerator[J].China Enviromental Science,2008,28(7):614-619.
[11]田书磊.垃圾焚烧飞灰重金属热分离工艺及挥发特性研究[D].哈尔滨:哈尔滨工业大学,2007.Tian S L.Thermal-separation process and evaporation mechanism of heavy metal from MSWI fly ash[D].Harbin:Harbin Institute of Technology,2007.
[12]蒋旭光,常威.生活垃圾焚烧飞灰的处置及应用概况[J].浙江工业大学学报,2015,43(1):7-17.Jang X G,Chang W.Review for treatment and application of municipal solid waste incineration fly ash[J].Journal of Zhejiang University of Technology,2015,43(1):7-17.
[13]Sakai S I,Hiraoka M.Municipal solid waste incinerator residue recycling by thermal processes[J].Waste Management,2000,20(2):249-258.
[14]Nishida K,Nagayoshi Y,Ota H,et al.Melting and stone production using MSW incinerated ash[J].Waste Management,2001,21(5):443-449.
[15]Dong J,Chi Y,Tang Y,et al.Partitioning of heavy metals in municipal solid waste pyrolysis,gasification,and incineration[J].Energy&Fuels,2015,29(11):151-209.
[16]文娟.垃圾焚烧飞灰熔融分离过程烟气中重金属迁移规律研究[D].重庆:重庆大学,2008.Wen J.Study on migration of heavy metals of municipal waste incineration fly ash in melting process[D].Chongqing:Chongqing University,2008.
[17]Chang C Y.Behavior of materials under the conditions of roasting MSW incinerator fly ash with chlorinating agents[J].Journal of Hazardous Materials,1999,64(1):75-89.
[18]Jakob A,Stucki S,Kuhn P.Evaporation of heavy metals during the heat treatment of municipal solid waste incinerator fly ash[J].Environmental Science&Technology,1995,29(9):2429-2436.
[19]Gong B,Deng Y,Yang Y,et al.Effects of microwave-assisted thermal treatment on the fate of heavy metals in MSWI fly ash[J].Energy&Fuels,2017,31(11):78-85.
[20]Fujimori T,Takaoka M,Takeda N.Influence of Cu,Fe,Pb,and Zn chlorides and oxides on formation of chlorinated aromatic compounds in MSWI fly ash[J].Environmental Science&Technology,2009,43(21):8053-8059.
[21]曾蒙秀,宋友桂.基于麦夸特算法的X射线衍射物相定量分析的影响因素研究[J].岩矿测试,2012,31(5):798-806.Zeng M X,Song Y G.Study on the influencing factors of the levenberg-marquardt algorithm for X-ray diffraction quantita[J].Rock and Mineral Analysis,2012,31(5):798-806.
[22]Tian S L,Yu M J,Wei W,et al.Investigating the speciation of copper in secondary fly ash by X-ray absorption spectroscopy[J].Environmental Science&Technology,2009,43(24):9084-9088.
[23]Tian S L,Zhu Y C,Meng B B,et al.Chemical speciation of lead in secondary fly ash using X-ray absorption spectroscopy[J].Chemosphere,2018,197:362-366.
[24]Chan C,Jia C Q,Graydon J W,et al.The behaviour of selected heavy metals in MSW incineration electrostatic precipitator ash during roasting with chlorination agents[J].Journal of Hazardous Materials,1996,50(1):1-13.