焚烧飞灰结构表征及烧结固化体重金属稳定化

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摘要通过元素分析(XRF)、X-射线衍射分析(XRD)、热重-差热分析(DSC)以及扫描/透射电镜分析(SEM/TEM)对垃圾焚烧(MSWI)飞灰进行了表征,采用成分调控烧结一定比例的MSWI飞灰、粉煤灰和水玻璃混合物固化MSWI飞灰中的重金属,通过理论建模和试验研究了烧结样品中重金属Pb、Cd、Zn的固化机理.Materials Studio能量模拟计算结果表明,重金属Pb、Cd和Zn可取代烧结样品晶相硅灰石结构中的Ca离子,具有能量增益.XRD分析结果证实,重金属掺入后硅灰石的晶格参数发生了相应的变化.Tessier提取试验结果表明,与MSWI原灰相比烧结处理后的固化体残渣晶格态含量增大,说明烧结固化处理后飞灰中的重金属稳定性显著提高.在热处理过程中,混合固化体中的重金属挥发率低于原灰.优化MSWI飞灰、粉煤灰和水玻璃配比,经相对低温(900℃)处理可以获得具有理想强度的飞灰陶粒制品,这一探索为MSWI飞灰资源化制备建筑材料的可行性提供了试验依据.

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	刘锡宇
	曹海琳
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	汪谢庚

关键词 ：生活垃圾焚烧飞灰, 重金属固化, 烧结陶粒, 硅灰石

Abstract：The MSWI fly ash was finely characterized by element analysis, XRD, DSC and TG-MS, SEM and TEM respectively. The solidification mechanism of heavy metals Pb, Cd and Zn in MSWI fly ash was studied through theoretical modelling and experiment by using the mixture of MSWI fly ash, fly ash and water glass with certain proportion of composition control sintering. The energy simulation calculation carried out by Materials Studio instructed that Pb, Cd, and Zn could replace Ca in the cell structure of wollastonite, the main phase in the final products, with energy benefit. The cell parameters of wollastonite were altered accordingly, which was confirmed by XRD analysis. The results of the Tessier extraction test elucidated that the sintered products have significantly large amount of the residue lattice phases, comparing with untreated MSWI fly ash, indicating the substantial improvement of the heavy metals stability in the sintered products. The study also found that the heavy metals had less volatilization ability in the solidified products than in the MSWI fly ash during heat treatment process. The MSWI fly ash ceramists, with satisfying mechanical features, were finally obtained with an optimal ratio of the MSWI fly ash, coal fly ash and sodium silicate solutions after a relatively low temperature treatment (900℃), which provides a feasible process to use MSWI fly ash as building materials.

Key words： MSWI fly ash solidification of heavy metals sintering ceramsite wollastonite

收稿日期: 2022-11-18

PACS:

X705

基金资助:深圳市基础研究(重点项目)(JCYJ20220818102402006)

通讯作者: 曹海琳,教授,caohl@hit.edu.cn E-mail: caohl@hit.edu.cn

作者简介: 刘锡宇(1998-),男,广西贺州人,哈尔滨工业大学硕士研究生,从事生活垃圾焚烧飞灰处置技术的研究.957480285@qq.com.

引用本文:

刘锡宇, 曹海琳, 翁履谦, 汪谢庚. 焚烧飞灰结构表征及烧结固化体重金属稳定化[J]. 中国环境科学, 2023, 43(S1): 160-169. LIU Xi-yu, CAO Hai-lin, WENG Lv-qian, WANG Xie-geng. Delicate characterization of MSWI fly ash and study on stabilization mechanism of heavy metals with sintering solidification. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(S1): 160-169.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2023/V43/IS1/160

[1] Trindade A B, Escobar Palacio J C, Gonzalez A M, et al. Advanced exergy analysis and environmental assesment of the steam cycle of an incineration system of municipal solid waste with energy recovery [J].Energy Conversion and Management, 2018,157(FEB.):195-214.
[2] Verbinnen B, Billen P, Van Caneghem J, et al. Recycling of MSWI bottom ash: A review of chemical barriers, engineering applications and treatment technologies [J].Waste and biomass valorization, 2017, 8(5):1453-1466.
[3] Lu Y, Tian A, Zhang J, et al. Physical and chemical properties, pretreatment, and recycling of municipal solid waste incineration fly ash and bottom ash for highway engineering: a literature review [J].Advances in Civil Engineering, 2020,2020:1-17.
[4] Lindberg D, Molin C, Hupa M. Thermal treatment of solid residues from WtE units: A review [J].Waste Management, 2015,37(mar.): 82-94.
[5] Luo H, Cheng Y, He D, et al. Review of leaching behavior of municipal solid waste incineration (MSWI) ash [J].Science of The Total Environment, 2019,668:90-103.
[6] Pan Y, Wu Z, Zhou J, et al. Chemical characteristics and risk assessment of typical municipal solid waste incineration (MSWI) fly ash in China [J].Journal of Hazardous Materials, 2013,261:269-276.
[7] Lam C H K, Ip A W M, Barford J P, et al. Use of incineration MSW ash: A review [J].Sustainability, 2010,2(7):1943-1968.
[8] Chrisanthi, Vavva, Epaminondas, et al. Process development for chemical stabilization of fly ash from municipal solid waste incineration [J].Chemical Engineering Research and Design, 2017, 125:57-71.
[9] Tang J, Su M, Zhang H, et al. Assessment of copper and zinc recovery from MSWI fly ash in Guangzhou based on a hydrometallurgical process [J].Waste Management, 2018,76(JUN.):225-233.
[10] Liu X, Zhao X, Yin H, et al. Intermediate-calcium based cementitious materials prepared by MSWI fly ash and other solid wastes: hydration characteristics and heavy metals solidification behavior [J].Journal of Hazardous Materials, 2018,349:262-271.
[11] Ma W, Shi W, Shi Y, et al. Plasma vitrification and heavy metals solidification of MSW and sewage sludge incineration fly ash [J].Journal of Hazardous Materials, 2021,408:124809.
[12] Na W. Leachability of heavy metals from lightweight aggregates made with sewage sludge and municipal solid waste incineration fly ash [J].International Journal of Environmental Research & Public Health, 2015,12(5):4992-5005.
[13] Park Y J, Heo J. Nucleation and crystallization kinetics of glass derived from incinerator fly ash waste [J].Ceramics international, 2002,28(6):669-673.
[14] Cheng T W, Ueng T H, Chen Y S, et al. Production of glass-ceramic from incinerator fly ash [J].Ceramics international, 2002,28(7):779-783.
[15] Fan W, Liu B, Luo X, et al. Production of glass–ceramics using Municipal solid waste incineration fly ash [J].Rare Metals, 2019, 38(3):245-251.
[16] Haiying Z, Youcai Z, Jingyu Q. Study on use of MSWI fly ash in ceramic tile [J].Journal of Hazardous Materials, 2007,141(1):106-114.
[17] Deng Y, Gong B, Chao Y, et al. Sustainable utilization of municipal solid waste incineration fly ash for ceramic bricks with eco-friendly biosafety [J].Materials Today Sustainability, 2018,1-2:32-38.
[18] Haiying Z, Youcai Z, Jingyu Q. Utilization of municipal solid waste incineration (MSWI) fly ash in ceramic brick: Product characterization and environmental toxicity [J].Waste Management, 2011,31(2):331-341.
[19] Zhang Y, Wang L, Chen L, et al. Treatment of municipal solid waste incineration fly ash: State-of-the-art technologies and future perspectives [J].Journal of Hazardous Materials, 2021,411:125132.
[20] Quina M J, Bordado J M, Quinta-Ferreira R M. Recycling of air pollution control residues from municipal solid waste incineration into lightweight aggregates [J].Waste Management, 2014,34(2):430-438.
[21] Chiang K, Hu Y. Water washing effects on metals emission reduction during municipal solid waste incinerator (MSWI) fly ash melting process [J].Waste Management, 2010,30(5):831-838.
[22] Jie Y, Sun L, Ma C, et al. Mechanism on heavy metals vaporization from municipal solid waste fly ash by MgCl₂⋅6H₂O [J].Waste Management, 2016,49:124-130.
[23] Zacco A, Benassi L, Rodella N, et al. A sustainable technology for Pb and Zn stabilization based on the use of only waste materials: A green chemistry approach to avoid chemicals and promote CO₂ sequestration [J].Chemical Engineering Journal, 2014.
[24] Guo X L, Shi H S, Huang J B. Effects of cement additives on alinite cement-based materials from municipal solid waste incineration (MSWI) fly ash [J].Key Engineering Materials, 2017,727:1046-1053.
[25] Lane D J, Sippula O, Koponen H, et al. Volatilisation of major, minor, and trace elements during thermal processing of fly ashes from waste-and wood-fired power plants in oxidising and reducing gas atmospheres [J].Waste Management, 2020,102(Feb.):698-709.
[26] Li G, Wu Q, Wang S, et al. The influence of flue gas components and activated carbon injection on mercury capture of municipal solid waste incineration in China [J].Chemical Engineering Journal, 2017: S1034797471.
[27] Zheng P A, Rw B, Yong R A, et al. Characterization of PCDD/Fs and heavy metal distribution from municipal solid waste incinerator fly ash sintering process [J].Waste Management, 2020,103:260-267.
[28] Zhou J, Wu S, Yun P, et al. Enrichment of heavy metals in fine particles of municipal solid waste incinerator (MSWI) fly ash and associated health risk [J].Waste Management, 2015,43(SEP.):239-246.
[29] Xiaofei, Sun, Jinhui, et al. A review on the management of municipal solid waste fly ash in American [J].Procedia Environmental Sciences, 2016.
[30] 李兵,张其龙,王猛,等.碱性吸收剂脱出燃煤烟气中的HCl的研究进展[J].化工进展, 2021,40(S1):404-410. Li B, Zhang Q, Wang M, et al. Research progress on removal of HCl from coal-fired flue gas by alkaline absorbent [J].Chemical Industry and Engineering Progress, 2021,40(S1):404-410.
[31] 周建国,张曙光,丽萍,等.城市生活垃圾焚烧飞灰水洗脱氯实验研究[J].天津城建大学学报, 2015,21(6):417-422. Zhou J, Zhang S, Li P, et al. Experimental Study of Removal of Soluble Chlorides by Water-washing Pretreatment of Municipal Solid Waste Incineration Fly Ash [J].Journal of Tianjin Chengjian University, 2015,21(6):417-422.
[32] Zhang Y, Cetin B, Likos W J, et al. Impacts of pH on leaching potential of elements from MSW incineration fly ash [J].Fuel, 2016, 184:815-825.
[33] Guo B, Liu B, Yang J, et al. The mechanisms of heavy metal immobilization by cementitious material treatments and thermal treatments: A review [J].Journal of environmental management, 2017,193:410-422.
[34] Cao Y N, Luo J J, Sun S Q. Characteristics of MSWI fly ash with acid leaching treatment [J].Journal of Fuel Chemistry and Technology, 2021,49(8):1208-1218.
[35] Owoeye S S, Abegunde S M, Folorunso D O, et al. Microstructure, phase and physical evaluation of non-bioactive wollastonite glass-Ceramic prepared from waste glass by sintering method [J].Open Ceramics, 2021.
[36] 朱芬芬,高冈昌辉,大下和撤,等.焚烧飞灰预处理工艺及其无机氯盐的行为研究[J].环境科学, 2013,34(6):2473-2478 Zhu F, Gao G, Takaoka M, Oshita K,et al. Pretreatment Technology for Fly Ash from MSWI and the Corresponding Study of Chloride Behavior [J].Environmental Science, 2013,34(6):2473-2478.
[37] Yang, Yue, Jia, et al. Heavy metal leaching and distribution in glass products from the co-melting treatment of electroplating sludge and MSWI fly ash. [J].Journal of Environmental Management, 2018.
[38] Li Y, Min X, Yong K, et al. Preparation of red mud-based geopolymer materials from MSWI fly ash and red mud by mechanical activation [J].Waste Management, 2019,83:202-208.
[39] Liu L, Yu H, Li Y, et al. Stabilization behavior and mechanism of heavy metals in eco-friendly glass-ceramics derived from wastes [J].Journal of Cleaner Production, 2020,269(8):122417.
[40] Huang T, Zhou L, Liu L, et al. Ultrasound-enhanced electrokinetic remediation for removal of Zn, Pb, Cu and Cd in municipal solid waste incineration fly ashes [J].Waste Management, 2018,75(MAY): 226-235.
[41] Xue M, Zhou D L, Cao J H, et al. Study on the crystal phase and preparation of the apatite-wollastonite porous glass ceramic [J].Journal of Functional Materials, 2009,40(1):97-100.
[42] Liu Z, Yue Y, Lu M, et al. Comprehension of heavy metal stability in municipal solid waste incineration fly ash with its compositional variety: A quick prediction case of leaching potential [J].Waste Management, 2019,84:329-339.
[43] Kang X A, Hh A, Sx A, et al. Fate of heavy metals during molten salts thermal treatment of municipal solid waste incineration fly ashes [J].Waste Management, 2020,103:334-341.
[44] Liu L, Yu H, Li Y, et al. Stabilization behavior and mechanism of heavy metals in eco-friendly glass-ceramics derived from wastes [J].Journal of Cleaner Production, 2020,269:122417.