热脱附-稳定化工序对土壤镉稳定化效率的影响

牛明芬; 陈驰; 吴波; 郭书海; 李刚; 徐丽; 闫晓峰

doi:10.13205/j.hjgc.202302022

热脱附-稳定化工序对土壤镉稳定化效率的影响

doi: 10.13205/j.hjgc.202302022

牛明芬¹,
陈驰^1,2,3,
吴波^2,3, ,,
郭书海^2,3,
李刚^2,3,
徐丽¹,
闫晓峰⁴

1. 沈阳建筑大学市政与环境工程学院, 沈阳 110168;
2. 中国科学院沈阳应用生态研究所, 沈阳 110016;
3. 污染土壤生物-物化协同修复技术国家地方联合工程实验室, 沈阳 110016;
4. 葫芦岛市生态环境服务中心, 辽宁葫芦岛 125000

基金项目:

国家重点研发计划课题"东北遗留场地重金属污染防治与安全利用技术体系构建"(2020YFC1806404)

详细信息

作者简介:
牛明芬(1967-),女,博士,教授,主要研究方向为污染控制与治理技术、固体废弃物处理。niumingfen@sina.com

通讯作者:
吴波(1982-),男,博士,研究员,主要研究方向为污染土壤修复。bowu@iae.ac.cn

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- 文章访问数: 52
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- 被引次数: 0
出版历程
- 收稿日期: 2021-12-26
- 网络出版日期: 2023-05-25
- 刊出日期: 2023-02-01

INFLUENCE OF SEQUENCE OF THERMAL DESORPTION-STABILIZATION ON SOIL CADMIUM STABILIZATION EFFICIENCY

NIU Mingfen¹,
CHEN Chi^1,2,3,
WU Bo^{2,3
, ,},
GUO Shuhai^2,3,
LI Gang^2,3,
XU Li¹,
YAN Xiaofeng⁴

1. School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
2. Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
3. National-Local Joint Engineering Laboratory of Contaminated Soil Remediation by Bio-Physicochemical Synergistic Process, Shenyang 110016, China;
4. Huludao Ecological Environment Service Center, Huludao 125000, China

摘要

摘要: 热脱附-稳定化是修复重金属-有机物复合污染土壤的主要工艺。由于热脱附对土壤重金属有"活化"和"固化"的双重作用,因此,热脱附-稳定化工序会影响重金属的稳定化效率。以含镉(Cd)的复合污染土壤为研究对象,从浸出率、形态分布、微观形貌3个层面,分析热脱附-稳定化(T-S)和稳定化-热脱附(S-T)工艺对Cd稳定化效率的影响。结果表明:S-T工艺浸出率(42.26%)低于T-S工艺(52.11%);由于Cd"活化""固化"与稳定化作用,S-T工艺处置的土壤Cd弱酸提取态和残渣态比例分别是T-S工艺的0.75,1.4倍,形态更趋于稳定分布;电镜扫描(SEM)显示,S-T工艺比T-S工艺处置后土壤颗粒结晶更为显著,说明土壤Cd的稳定化效果更好。
- 热脱附 /
- 稳定化 /
- 工艺顺序 /
- 稳定化效率 /
- 浸出率 /
- 形态分布 /
- 电镜扫描
Abstract: Thermal desorption-stabilization was the main process for repairing heavy metal-organic co-contaminated soil. Thermal desorption had the dual effect of "activation" and "solidification" on heavy metals in the soil, so the thermal desorption-stabilization sequences will affect the stabilization efficiency of heavy metals. In this study, the co-contaminated soil containing cadmium (Cd) was used as the research object to analyze the effect of thermal desorption-stabilization (T-S) and stabilization-thermal desorption (S-T) processes on Cd stabilization efficiency, from the three levels of leaching rate, morphological distribution, and micromorphology. The results showed that the leaching rate of S-T process (42.26%) was lower than that of T-S process (52.11%). Due to the activation, solidification and stabilization effect of Cd, the ratio of weak acid extraction and residue of soil Cd treated by S-T process was 0.75 and 1.4 times that of T-S process, and the morphological distribution of Cd in the soil tended to be more stable. Scanning electron microscope (SEM) showed that S-T process had more significant soil particle crystallization than T-S process, which characterizes that Cd stabilization was better.
- desorption /
- stabilization /
- process sequence /
- stabilization efficiency /
- leaching rate /
- morphological distribution /
- scanning electron microscope

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参考文献(33)

[1]	PORTET K, BENAMAR A, DUCLAIROIR C, et al. Application of biosurfactants and periodic voltage gradient for enhanced electrokinetic remediation of metals and PAHs in dredged marine sediments[J]. Chemosphere:Environmental Toxicology and Risk Assessment, 2015, 125(4):1-8.
[2]	吴嘉茵,方战强,薛成杰,等.我国有机污染场地土壤修复技术的专利计量分析[J]环境工程学报,2019,13(8):2015-2024.
[3]	郭书海,吴波,胡清,等.污染土壤修复技术预测[J].环境工程学报,2017,11(6):3797-3804.
[4]	叶渊,许学慧,李彦希,等.热处理修复方式对污染土壤性质及生态功能的影响[J].环境工程技术学报,2021,11(2):371-377.
[5]	TEREFE T, MARISCAL I, PEREGRINA F, et al. Influence of heating on various properties of six Mediterranean soils. A laboratory study[J]. Geoderma,2008,143(3):273-280.
[6]	郭丽莉,李嘉晨,李书鹏,等.热解吸工艺放置顺序对土壤重金属稳定化效果的影响[J].环境工程学报,2021,15(8):2678-2688.
[7]	KIRK D W, CHAN C, MARSH H. Chromium behavior during thermal treatment of MSW fly ash[J]. Journal of Hazardous Materials, 2002, 90(1):39-49.
[8]	ZHANG D L, KONG H N, WU D Y, et al. Impact of pyrolysis treatment on heavy metals in sediment[J]. Journal of Soil Contamination, 2009, 18(6):754-765.
[9]	WANG X L, WANG M H, QUAN S X, et al. Influence of thermal treatment on fixation rate and leaching behaviour of heavy metals in soils from a typical e-waste processing site[J]. Journal of Environmental Chemical Engineering,2015,4(1):82-88.
[10]	SAMAKSAMAN U, PENG T H, KUO J H, et al. Thermal treatment of soil co-contaminated with lube oil and heavy metals in a low-temperature two-stage fluidized bed incinerator[J]. Applied Thermal Engineering, 2016, 93(3):131-138.
[11]	邱素芬,魏来,于文静,等.沸石强化热处理对土壤中铜和锌的固定作用[J].安全与环境学报,2018,18(2):711-715.
[12]	HE Y D, ZHAI Y B, LI C T, et al. The fate of Cu, Zn, Pb and Cd during the pyrolysis of sewage sludge at different temperatures[J]. Environmental Technology, 2010, 31(5):567-574.
[13]	CHEN T, YAN B. Fixation and partitioning of heavy metals in slag after incineration of sewage sludge[J]. Waste Management, 2012, 32(5):957-964.
[14]	勾立争,刘长波,刘诗成,等.热脱附法修复多环芳烃和汞复合污染土壤实验研究[J].环境工程,2018,36(2):184-187 , 146.
[15]	赵涛,马刚平,周宇,等.多环芳烃类污染土壤热脱附修复技术应用研究[J]环境工程,2017,35(11):178-181.
[16]	ADRIANO D C, WENZEL W W, VANGRONSVELD J, et al. Role of assisted natural remediation in environmental cleanup[J]. Geoderma, 2004, 122(2/3/4):121-142.
[17]	付煜恒,张惠灵,王宇,等.磷酸盐对铅镉复合污染土壤的钝化修复研究[J].环境工程,2017,35(9):176-180 ,163.
[18]	刘向磊,孙文军,文田耀,等.三酸分步消解-电感耦合等离子体质谱法测定土壤详查样品中23种金属元素[J].岩矿测试,2020,39(5):793-800.
[19]	SUN Y F, XIE Z M, XU J M, et al. Assessment of toxicity of heavy metal contaminated soils by the toxicity characteristic leaching procedure[J]. Environmental Science, 2005, 28(1):152-156.
[20]	RSURET G, LPOEZ J F, SAHUQULLO A, et al. Improvement of the BCR three step sequential extraction procedure prior to the certification of new sediment and soil reference materials[J]. Journal of Environmental Monitoring,1999,1(1):57-61.
[21]	YANG S, LIU W B. The effect of changing fly ash content on the modulus of compression of stabilized soil[J]. Materials, 2019, 12(18):1-15.
[22]	李立平,邢维芹,向国强,等.不同添加剂对铅冶炼污染土壤中铅、镉稳定效果的研究[J].环境科学学报,2012,32(7):1717-1724.
[23]	YAN Y, ZHOU Y Q, HUA L C, et al. Evaluation of phosphate fertilizer for the immobilization of Cd in contaminated solis[J]. Plos One,2015,10(4):e0124022.
[24]	韩春梅,王林山,巩宗强.土壤中重金属形态分析及其环境学意义[J].生态学杂志,2005,24(12):1499-1502.
[25]	赵拓坤,赵楠,肖雪,等.热处理对土壤中重金属的浸出浓度变化规律的影响研究[C]//第10届全国环境化学大会论文集.天津:南开大学.
[26]	THAWORMCHAISIT U, POLPRASERT C. Evaluation of phosphate fertilizers for the stabilization of cadmium in highly contaminated soils[J]. Journal of hazardous materials, 2009, 165(1/2/3):1109-1113.
[27]	于冰冰,颜湘华,王兴润,等.不同材料对铅锌冶炼矿渣中Zn、Cd和As的稳定化效应[J].环境工程,2020,38(8):222-228 , 254.
[28]	李雅贞,罗琳,晏洪铃,等.含磷材料对矿区铅镉污染土壤重金属形态转化的影响[J].环境工程学报,2015,9(5):2469-2472.
[29]	何燎,桑义敏,余望,等.炭化材料的制备及其在土壤热处理炭化研究中的应用进展[J].环境工程,2021,39(8):179-187.
[30]	BADIA-VILLAS D, GONZALEZ-PEREZ J A, AZNAR J M,et al. Changes in water repellency,aggregation and organic matter of a mollic horizon burned in laboratory:soil depth affected by fire[J]. Geodema, 2014,213(1):400-407.
[31]	GRAHAM A L. Forest fire effects on soil color and texture[J]. Soil Science,1993,57:135-140.
[32]	夏威夷.新型羟基磷灰石基固化剂修复铅锌复合污染土壤的机理与应用研究[D].南京:东南大学,2018.
[33]	张煜行,何明靖,刘文新,等.不同土壤调理剂对土壤镉和邻-二甲酸酯迁移转化影响[J].环境科学,2021,42(8):4021-4036.