[1]刘斌,吴新,李军辉,等.稻壳灰制备条件对稳固化垃圾飞灰重金属的影响[J].东南大学学报(自然科学版),2020,50(3):522-529.[doi:10.3969/j.issn.1001-0505.2020.03.015]
 Liu Bin,Wu Xin,Li Junhui,et al.Effects of combustion conditions of rice husk on stabilization of heavy metals in MSWI fly ash[J].Journal of Southeast University (Natural Science Edition),2020,50(3):522-529.[doi:10.3969/j.issn.1001-0505.2020.03.015]
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稻壳灰制备条件对稳固化垃圾飞灰重金属的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
50
期数:
2020年第3期
页码:
522-529
栏目:
环境科学与工程
出版日期:
2020-05-20

文章信息/Info

Title:
Effects of combustion conditions of rice husk on stabilization of heavy metals in MSWI fly ash
作者:
刘斌吴新李军辉谭锦涛王开梁财
东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096
Author(s):
Liu Bin Wu Xin Li Junhui Tan Jintao Wang Kai Liang Cai
Key Laboratory of Energy Thermal Conversion and Process Control of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
垃圾飞灰 稻壳灰 制备条件 热处理 重金属稳固化
Keywords:
municipal solid waste incineration(MSWI)fly ash rice husk ash combustion conditions thermal treatment stabilization of heavy metals
分类号:
X705
DOI:
10.3969/j.issn.1001-0505.2020.03.015
摘要:
为了实现稻壳的资源化利用以及垃圾飞灰的无害化处理,以不同煅烧条件制得的稻壳灰作为中温热处理垃圾飞灰稳固化重金属的添加剂.采用X射线衍射、扫描电子显微镜以及BCR逐级提取法,探究不同的煅烧温度和时间下制得的稻壳灰对飞灰重金属稳固化的影响.研究结果表明:煅烧温度为500 ℃时,处理样中Pb和Zn的浸出质量浓度均随稻壳煅烧时间的延长逐渐降低;当煅烧温度在600~800 ℃时,Pb和Zn的浸出质量浓度均随着稻壳煅烧时间的延长先降低后升高.稻壳煅烧条件对稻壳灰的反应活性以及稳固化重金属效果有重要影响.经稻壳灰热处理后新生成Fluorellestadite相(Ca10(SiO4)3(SO4)3F2)和Ca3SiO5等,此类晶体结构有利于实现对重金属的包裹;热处理后飞灰的重金属中不稳定的酸溶态转化为稳定的可氧化态和残渣态,从而实现飞灰重金属的稳固化.
Abstract:
To realize both resource utilization of rice husk and harmless treatment of municipal solid waste incineration(MSWI)fly ash, the rice husk ash obtained under different combustion conditions was adopted as the additive for the stabilization of heavy metals in MSWI fly ash using intermediate-temperature thermal treatment. The effects of the combustion temperature and time of the rice husk on the stabilization of heavy metals in MSWI fly ash were investigated by X-ray diffraction, scanning electron microscopy and European Community Bureau of Reference(BCR)sequential extraction procedure analysis. The results show that when the combustion temperature is 500 ℃, the leaching concentrations of Pb and Zn in the thermal treatment samples decrease with the extension of combustion time. However, with the temperature ranging from 600 ℃ to 800 ℃, the leaching concentrations of Pb and Zn decrease firstly and then increase. The combustion conditions of rice husk exact an important effect on the reactivity of rice husk ash(RHA)and the stabilization efficiency of heavy metals. Fluorellestadite phase(Ca10(SiO4)3(SO4)F2)and Ca3SiO5 beneficial to the encapsulation of heavy metals, are formed after thermal treatment with the addition of rice husk ash into MSWI fly ash. The thermal treatment at the intermediate-temperature facilitates the conversion of unstable acid-soluble state in heavy metals to stable oxidizable state and residual state thus realizing the stabilization of heavy metals in MSWI fly ash.

参考文献/References:

[1] 徐颖,陈玉,冯岳阳.重金属螯合剂处理垃圾焚烧飞灰的稳定化技术[J].化工学报,2013,64(5):1833-1839. DOI: 10.3969/j.issn.0438-1157.2013.05.045.
Xu Y, Chen Y, Feng Y Y. Stabilization technology in treating municipal solid waste incineration fly ash using heavy metal chelating agent[J]. CIESC Journal, 2013, 64(5): 1833-1839. DOI:10.3969/j.issn.0438-1157.2013.05.045. (in Chinese)
[2] Rani D A, Boccaccini A R, Deegan D, et al. Air pollution control residues from waste incineration: Current UK situation and assessment of alternative technologies[J]. Waste Management, 2008, 28(11): 2279-2292. DOI:10.1016/j.wasman.2007.10.007.
[3] Horák J, Kuboňová L, Bajer S, et al. Composition of ashes from the combustion of solid fuels and municipal waste in households[J]. Journal of Environmental Management, 2019, 248: 109269. DOI:10.1016/j.jenvman.2019.109269.
[4] Bontempi E, Zacco A, Borgese L, et al. A new method for municipal solid waste incinerator(MSWI)fly ash inertization, based on colloidal silica[J]. Journal of Environmental Monitoring, 2010, 12(11): 2093-2099. DOI:10.1039/c0em00168f.
[5] Li X, Chen Q, Zhou Y, et al. Stabilization of heavy metals in MSWI fly ash using silica fume [J]. Waste Management, 2014, 34(12): 2494-2504. DOI:10.1016/j.wasman.2014.08.027.
[6] 孙立,吴新,刘道洁,等.基于硅基的垃圾焚烧飞灰中温热处理重金属稳固化实验[J].化工进展,2017,36(9):3514-3522. DOI:10.16085/j.issn.1000-6613.2017-0141.
Sun L, Wu X, Liu D J, et al. Stabilization of heavy metals in municipal solid waste incineration fly ash using thermal treatment with silica-based material[J].Chemical Industry and Engineering Progress, 2017, 36(9): 3514-3522. DOI:10.16085/j.issn.1000-6613.2017-0141. (in Chinese)
[7] Zevenbergen C, Honders A, Orbons A J, et al.Immobilisation of heavy metals in contaminated soils by thermal treatment at intermediate temperatures [J]. Studies in Environmental Science, 1997, 71: 661-672. DOI:10.1016/s0166-1116(97)80249-x.
[8] 李军辉,吴新,刘道洁,等.不同处理方法对硅灰稳固化垃圾焚烧飞灰重金属的影响[J].中国环境科学,2018,38(11):4198-4204. DOI:10.19674/j.cnki.issn1000-6923.2018.0467.
Li J H, Wu X, Liu D J, et al. Effects of different treatment methods on the stabilization of heavy metals in municipal solid waste incineration fly ash using silica fume[J]. China Environmental Science, 2018, 38(11): 4198-4204. DOI:10.19674/j.cnki.issn1000-6923.2018.0467. (in Chinese)
[9] Benassi L, Bosio A, Dalipi R, et al. Comparison between rice husk ash grown in different regions for stabilizing fly ash from a solid waste incinerator[J]. Journal of Environmental Management, 2015, 159: 128-134. DOI:10.1016/j.jenvman.2015.05.015.
[10] Park Y J. Stabilization of a chlorine-rich fly ash by colloidal silica solution[J]. Journal of Hazardous Materials, 2009, 162(2/3): 819-822. DOI:10.1016/j.jhazmat.2008.05.143.
[11] 常威.生活垃圾焚烧飞灰的水洗及资源化研究[D].杭州:浙江大学,2016.
  Chang W. Study on the washing process and recycling of MSWI fly ash[D]. Hangzhou: Zhejiang University, 2016.(in Chinese)
[12] 万晓,王伟,叶暾旻,等.垃圾焚烧飞灰中重金属的分布与性质[J].环境科学,2005,26(3):172-175. DOI:10.13227/j.hjkx.2005.03.035.
Wan X, Wang W, Ye T M, et al. Distribution and characters of heavy metals from municipal solid waste incinerator fly ash[J]. Environmental Science, 2005, 26(3): 172-175. DOI:10.13227/j.hjkx.2005.03.035. (in Chinese)
[13] 章骅,于思源,邵立明,等.烟气净化工艺和焚烧炉类型对生活垃圾焚烧飞灰性质的影响[J].环境科学,2018,39(1):467-476. DOI:10.13227/j.hjkx.201705241.
Zhang H, Yu S Y, Shao L M, et al. Influence of air pollution control(APC)systems and furnace type on the characteristics of APC residues from municipal solid waste incinerators[J]. Environmental Science, 2018, 39(1): 467-476. DOI:10.13227/j.hjkx.201705241. (in Chinese)
[14] Umoren I U, Udoh A P, Udousoro I I. Concentration and chemical speciation for the determination of Cu, Zn, Ni, Pb and Cd from refuse dump soils using the optimized BCR sequential extraction procedure[J]. The Environmentalist, 2007, 27(2): 241-252. DOI:10.1007/s10669-007-9001-3.
[15] 左海强,郑建建,刘国荣,等.煅烧温度和时间对稻壳灰助滤剂助滤性能的影响研究[J].流体机械,2012,40(9):6-8,13.
  Zuo H Q, Zheng J J, Liu G R, et al. Study on the factors of burning temperature and time on producing rice husk ash filter aid to enhance filtration performance[J]. Fluid Machinery, 2012, 40(9): 6-8,13.(in Chinese)
[16] Xu W T, Wei J X, Chen J J, et al. Comparative study of water-leaching and acid-leaching pretreatment on the thermal stability and reactivity of biomass silica for viability as a pozzolanic additive in cement[J]. Materials, 2018, 11(9): 1697. DOI:10.3390/ma11091697.
[17] 张岩,池涌,李晓东,等.利用燃煤流化床飞灰固化垃圾焚烧飞灰的试验研究[J].热力发电,2005,34(10):25-29. DOI:10.19666/j.rlfd.2005.10.007.
Zhang Y, Chi Y, Li X D, et al. Test study on solidification of fly ash from msw incineration by using fly ash of coal from fluidized bed combustion[J].Thermal Power Generation, 2005, 34(10): 25-29. DOI:10.19666/j.rlfd.2005.10.007. (in Chinese)
[18] 钟山,冯经昆,陈阳,等.垃圾焚烧飞灰中重金属的热稳定化条件及机理[J].燃料化学学报,2013,41(12):1532-1538. DOI: 10.3969/j.issn.0253-2409.2013.12.019.
Zhong S, Feng J K, Chen Y, et al. Thermal stabilization condition and mechanism of heavy metals in fly ash of solid waste incineration[J]. Journal of Fuel Chemistry and Technology, 2013, 41(12): 1532-1538. DOI:10.3969/j.issn.0253-2409.2013.12.019. (in Chinese)
[19] Ma W C, Fang Y H, Chen D M, et al. Volatilization and leaching behavior of heavy metals in MSW incineration fly ash in a DC arc plasma furnace[J]. Fuel, 2017, 210: 145-153. DOI:10.1016/j.fuel.2017.07.091.
[20] Polettini A, Pomi R, Trinci L, et al. Engineering and environmental properties of thermally treated mixtures containing MSWI fly ash and low-cost additives[J]. Chemosphere, 2004, 56(10): 901-910. DOI:10.1016/j.chemosphere.2004.05.004.
[21] Frugier P, Godon N, Vernaz E, et al. Influence of composition variations on the initial alteration rate of vitrified domestic waste incineration fly-ash[J]. Waste Management, 2002, 22(2): 137-142. DOI:10.1016/s0956-053x(01)00061-7.
[22] 王禺昊,董众兵.燃煤飞灰热处理过程中重金属挥发特性研究[J].煤炭科学技术,2018,46(11):221-226. DOI:10.13199/j.cnki.cst.2018.11.034.
Wang Y H, Dong Z B. Study on vaporization behavior of heavy metals in fly ash derived from coal combustion during thermal treatment[J]. Coal Science and Technology, 2018, 46(11): 221-226. DOI:10.13199/j.cnki.cst.2018.11.034. (in Chinese)
[23] 王野,李娜,田书磊,等.垃圾焚烧飞灰热处理过程中Zn的挥发机理研究[J].中国环境科学,2019,39(2):706-712. DOI:10.19674/j.cnki.issn1000-6923.2019.0087.
Wang Y, Li N, Tian S L, et al. Volatilization mechanism of Zn on municipal solid waste incineration fly ash during thermal treatment[J]. China Environmental Science, 2019, 39(2): 706-712. DOI:10.19674/j.cnki.issn1000-6923.2019.0087. (in Chinese)

备注/Memo

备注/Memo:
收稿日期: 2019-12-02.
作者简介: 刘斌(1995—),男,硕士生;吴新(联系人),男,博士,副教授,wuxin@seu.edu.cn.
基金项目: 国家重点研发计划资助项目(2018YFB0605102).
引用本文: 刘斌,吴新,李军辉,等.稻壳灰制备条件对稳固化垃圾飞灰重金属的影响[J].东南大学学报(自然科学版),2020,50(3):522-529. DOI:10.3969/j.issn.1001-0505.2020.03.015.
更新日期/Last Update: 2020-05-20