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垃圾焚烧飞灰中Cd、Pb、Zn的螯合稳定与水泥固化处理

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郝玉, 徐宏勇, 柏舸, 王禕天, 陈橙, 王雄, 蔡兰坤. 垃圾焚烧飞灰中Cd、Pb、Zn的螯合稳定与水泥固化处理[J]. 环境工程学报, 2018, 12(8): 2357-2362. doi: 10.12030/j.cjee.201803036
引用本文: 郝玉, 徐宏勇, 柏舸, 王禕天, 陈橙, 王雄, 蔡兰坤. 垃圾焚烧飞灰中Cd、Pb、Zn的螯合稳定与水泥固化处理[J]. 环境工程学报, 2018, 12(8): 2357-2362. doi: 10.12030/j.cjee.201803036
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HAO Yu, XU Hongyong, BAI Ge, WANG Yitian, CHEN Cheng, WANG Xiong, CAI Lankun. Stabilization/solidification of Cd, Pb and Zn in municipal solid waste incineration (MSWI) fly ash with chelating agent and cement[J]. Chinese Journal of Environmental Engineering, 2018, 12(8): 2357-2362. doi: 10.12030/j.cjee.201803036
Citation: HAO Yu, XU Hongyong, BAI Ge, WANG Yitian, CHEN Cheng, WANG Xiong, CAI Lankun. Stabilization/solidification of Cd, Pb and Zn in municipal solid waste incineration (MSWI) fly ash with chelating agent and cement[J]. Chinese Journal of Environmental Engineering, 2018, 12(8): 2357-2362. doi: 10.12030/j.cjee.201803036
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垃圾焚烧飞灰中Cd、Pb、Zn的螯合稳定与水泥固化处理

  • 1.

    华东理工大学资源与环境工程学院，上海 200237

  • 基金项目:

Stabilization/solidification of Cd, Pb and Zn in municipal solid waste incineration (MSWI) fly ash with chelating agent and cement

  • 1.

    School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China

  • Fund Project:

  • 摘要: 采用有机硫稳定剂 (DTCR) 与水泥对城市垃圾焚烧飞灰进行稳定/固化处理，研究了飞灰中Cd、Pb、Zn的浸出毒性和固化体的抗压强度，比较了螯合稳定与水泥固化对Cd、Pb、Zn的处理效果、养护时间对固化体抗压强度的影响，并对飞灰的结构形貌进行了分析。结果表明，在稳定固化过程中飞灰中发生了复杂的螯合、水化反应，重金属形态由不稳定态向稳定态转变，螯合稳定对Cd的处理效果最好，水泥固化更适用于Pb、Zn。固化时间大于7 d后，飞灰中的重金属以及固化体的抗压强度已较为稳定。螯合稳定协同水泥固化的处理效果优于单一的稳定或固化方法，飞灰在固化7 d后可同时达到重金属浸出毒性和抗压强度标准，满足安全填埋要求。
    Abstract: Dithiocarbamate (DTCR) and cement were used to stabilize and solidify municipal solid waste incineration (MSWI) fly ash. Experiments were conducted to investigate the compressive strength of the solidified body and the leaching toxicity of Cd, Pb, Zn. The effect of curing time on solidified body compressive strength and the structure morphology of fly ash were also analyzed. The results showed that complex chelation and hydration reaction occurred during the stabilization/solidification process and that chemical states of heavy metals converted from unstable to stable forms. The stabilization using chelating agent is better for Cd while the solidification using cement is more suitable for Pb and Zn. The compressive strength of the solidified body cured after 7 d have been stable while the leaching toxicity of heavy metals is negligible. The effect of cement admixed chelating agent stabilization/solidification is superior to a stabilization/solidification using the only cement or chelating agent. The solidified body cured after 7 d meets the criteria of leaching toxicity of heavy metals and compressive strength during the security landfill.
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  • [1] ZACCO A, BORGESE L, GIANONCELLI A, et al.Review of fly ash inertisation treatments and recycling[J].Environmental Chemistry Letters, 2014, 12(1):153-175 10.1007/s10311-014-0454-6
    [2] TANG J, STEENARI B M.Leaching optimization of municipal solid waste incineration ash for resource recovery: A case study of Cu, Zn, Pb and Cd [J].Waste Management, 2015, 48(3):315-322 10.1016/j.wasman.2015.10.003
    [3] KOZAKOVA L, BAKALAR T, ZELENAK M, et al.Solidification of MSWI fly-ash with regard to hazardous metals leaching [J].Acta Montanistica Slovaca, 2013, 18(2):129-139
    [4] 孙杨雨,焦春磊,谭笑,等.生活垃圾焚烧飞灰中重金属的稳定化及其机理研究[J].中国科学:化学,2016,46(7):716-724
    [5] 蒋建国, 赵振振, 王军,等. 焚烧飞灰水泥固化技术研究[J]. 环境科学学报, 2006, 26(2):230-235
    [6] ZHAO Y C, SONG L J, LI G J.Chemical stabilization of MSW incinerator fly ashes.[J].Journal of Hazardous Materials, 2002, 95(1):47-63
    [7] 王锐刚, 韩怀芬. 重金属螯合剂处理危险废物的研究进展[J]. 环境技术, 2003, 21(2):35-37
    [8] 国家环境保护总局. 固体废物浸出毒性浸出方法 醋酸缓冲溶液：HJ/T 300-2007 [S]. 北京：中国环境科学出版社，2007
    [9] TESSIER A, CAMPBELL P G C, BISSON M.Sequential extraction procedure for the speciation of particulate trace metals[J].Analytical Chemistry, 1979, 51(7):844-851 10.1021/ac50043a017
    [10] 环境保护部，国家质量监督检疫总局. 生活垃圾填埋场污染控制标准：GB 16889-2008 [S]. 北京：中国环境科学出版社, 2008
    [11] 张帆, 王风贺, 郝昊天,等.SGA对重金属污染矿区土壤中重金属的稳定化性能研究[J]. 南京师大学报(自然科学版), 2014, 37(3):62-66
    [12] 罗忠涛, 肖宇领, 杨久俊,等. 垃圾焚烧飞灰有毒重金属固化稳定技术研究综述[J]. 环境污染与防治, 2012, 34(8):58-62
    [13] 中华人民共和国建设部. 生活垃圾焚烧处理工程技术规范[M]. 北京：中国建筑工业出版社, 2002
    [14] CHINDAPRASIRT P, HOMWUTTIWONG S, SIRIVIVATNANON V.Influence of fly ash fineness on strength, drying shrinkage and sulfate resistance of blended cement mortar[J].Cement & Concrete Research, 2004, 34(7):1087-1092
    [15] MANGIALARDI T, PAOLINI A E, POLETTINI A, et al.Optimization of the solidification/stabilization process of MSW fly ash in cementitious matrices[J].Journal of Hazardous Materials, 1999, 70(1/2):53-70 10.1016/S0304-3894(99)00132-6
    [16] 田志鹏, 田海燕, 张冰如. 城市生活垃圾焚烧飞灰物化性质及重金属污染特性[J]. 环境污染与防治, 2016, 38(9):80-85
    [17] POULSEN S L, KOCABA V, LE S G, et al.Improved quantification of alite and belite in anhydrous Portland cements by 29Si MAS NMR: Effects of paramagnetic ions[J].Solid State Nuclear Magnetic Resonance, 2009, 36(1):32-44 10.1016/j.ssnmr.2009.05.001
    [18] 王川, 杨朝晖, 曾光明,等.DTCR协同水泥固化/稳定化重金属污染底泥的研究[J]. 中国环境科学, 2012, 32(11):2060-2066
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  • 刊出日期:  2018-08-17

垃圾焚烧飞灰中Cd、Pb、Zn的螯合稳定与水泥固化处理

  • 1. 华东理工大学资源与环境工程学院，上海 200237
基金项目:

摘要: 采用有机硫稳定剂 (DTCR) 与水泥对城市垃圾焚烧飞灰进行稳定/固化处理，研究了飞灰中Cd、Pb、Zn的浸出毒性和固化体的抗压强度，比较了螯合稳定与水泥固化对Cd、Pb、Zn的处理效果、养护时间对固化体抗压强度的影响，并对飞灰的结构形貌进行了分析。结果表明，在稳定固化过程中飞灰中发生了复杂的螯合、水化反应，重金属形态由不稳定态向稳定态转变，螯合稳定对Cd的处理效果最好，水泥固化更适用于Pb、Zn。固化时间大于7 d后，飞灰中的重金属以及固化体的抗压强度已较为稳定。螯合稳定协同水泥固化的处理效果优于单一的稳定或固化方法，飞灰在固化7 d后可同时达到重金属浸出毒性和抗压强度标准，满足安全填埋要求。

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