煤矸石淋滤液中污染物在GCL中的扩散性能

董兴玲; 董书宁; 周振方; 王强民; 刘基

doi:10.3969/j.issn.1001-1986.2019.03.020

煤矸石淋滤液中污染物在GCL中的扩散性能

董兴玲^1,2,
董书宁^1,2,
周振方^1,2,
王强民^1,2,
刘基^1,2

1. 中煤科工集团西安研究院有限公司，陕西西安 710077;
2. 陕西省煤矿水害防治技术重点实验室，陕西西安 710077

基金项目:

天地科技股份有限公司科技创新创业资金专项项目（2018-TD-MS073）；国家重点研发计划项目（2017YFC0804103，2016YFC0501104）；国家自然科学基金项目（41807221）；中煤科工集团西安研究院有限公司科技创新基金项目（2015XAYMS21）

详细信息

作者简介:
董兴玲,1982年生,女,山东枣庄人,博士,助理研究员,从事矿区水环境保护与生态修复方面的研究工作.E-mail:dongxingling@cctegxian.com

中图分类号: X52
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出版历程
- 收稿日期: 2018-08-23
- 发布日期: 2019-06-24

Diffusion ability of contaminants of coal gangue leachate in geosynthetic clay liners

1. Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China;
2. Shaanxi Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology, Xi'an 710077, China

Funds:

Tiandi Science and Technology Co. Ltd. Science and Technology Innovation Venture Capital Special Project(2018-TD-MS073)

摘要

摘要: 为验证土工合成黏土衬垫（Geosynthetic Clay Liners，GCL）作为煤矸石处置场衬垫层建设材料的可行性，采用垂直式双筒扩散装置进行室内扩散试验，研究了煤矸石淋滤液中典型污染物Zn²⁺、Mn²⁺和SO₄^2-在人工钠化膨润土GCL中的扩散性能，使用有限层法模拟软件POLLUTE V7对污染物随时间变化的曲线进行拟合，确定3种污染物在人工钠化膨润土GCL中的扩散系数。研究结果表明，污染物在GCL中的扩散系数低于它们在传统压实黏土衬垫层中的扩散系数，从而能更有效地控制煤矸石淋滤液中污染物在GCL中的扩散迁移行为。
- 煤矸石淋滤液 /
- 土工合成黏土衬垫 /
- 扩散性能 /
- 重金属 /
- 硫酸盐
Abstract: To verify the feasibility of geosynthetic clay liners(GCL) as liners material for coal gangue impoundment, diffusion tests were conducted with vertical double reservoir method to determine the diffusion ability of heavy metals(Zn²⁺、Mn²⁺) and sulfate from coal gangue leachate in GCL-S(Sodium-activated bentonite), and POLLUTE V7 based on finite layer method was used to draw the fitting curve of pollutant changing with time in the diffusion device, which calculated the diffusion coefficient of contaminants in GCL. The data show that the diffusion coefficient in GCL was lower than that in compacted clay liners, so GCL could control the diffusion and migration of pollutants more effectively.
- coal gangue leachate /
- geosynthetic clay liners /
- diffusion ability /
- heavy metals /
- sulphate

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参考文献(26)

[1]	国家发展和改革委员会. 中国资源综合利用年度报告(2014)[R]. 2014.
[2]	ZHU J,CHERTOW M R. Greening industrial production through waste recovery:"Comprehensive utilization of re-sources" in China[J]. Environmental Science and Technology,2016,50(5):2175-2182.
[3]	QURESHI A,CHRISTIAN M,BJÖRN Ö. Potential of coal mine waste rock for generating acid mine drainage[J]. Journal of Geochemical Exploration,2016,160:44-54.
[4]	STEPHANIE N J,BORA C. Evaluation of waste materials for acid mine drainage remediation[J]. Fuel,2017,188:294-309.
[5]	王禺昊. 淮南新庄孜矿煤矸石充填复垦土壤中镉的迁移特征[J]. 煤田地质与勘探,2018,46(1):135-138. WANG Yuhao. Characteristics of Cadmium migration in the reclaimed soil filled with the coal gangue from the Xinzhuangzi mine in Huainan[J]. Coal Geology & Explora-tion,2018,46(1):135-138.
[6]	王国强,赵华宏,吴道祥,等. 两淮矿区煤矸石的卫生填埋与生态恢复[J]. 煤炭学报,2001,26(4):428-431. WANG Guoqiang,ZHAO Huahong,WU Daoxiang,et al. Gangue sanitary landfill and recovering ecological environ-ment in Huaibei and Huainan mining area[J]. Journal of China Coal Society,2001,26(4):428-431.
[7]	RICHARD B,BOOKER J R,QUIGLEY R M,et al. Barrier systems for waste disposal facilities[M]. London and New York:Taylor & Francis Group,2004.
[8]	LAKE C B,ROWE R K. Diffusion of sodium and chloride through geosynthetic clay liners[J]. Geotextiles and Geomembranes,2000,18(2/3/4):103-131.
[9]	OLSEN S R,KEMPER W D. Movement of nutrients to plant roots[J]. Advances in Agronomy,1986(20):91-151.
[10]	SHACKELFORD C D,DANIEL D E. Diffusion in saturated soil. Ⅰ:Background[J]. Journal of Geotechnical Engineering,1991,117(3):467-484.
[11]	SHACKELFORD C D. Laboratory diffusion testing for waste disposal:A review[J]. Journal of Contaminant Hydrology,1991,7(3):177-217.
[12]	DANIEL D E,BOWDERS J J,GILBERT R B. Laboratory hydraulic conductivity testing of GCLs in flexible-wall permeameters[C]//West Conshohocken:ASTM,1997.
[13]	ROWE R,LAKE C,PETROV R. Apparatus and procedures for assessing inorganic diffusion coefficients for geosynthetic clay liners[J]. Geotechnical Testing Journal,2000,23(2):206-214.
[14]	LORENZETTI R J,BARTELT-HUNT S L,BURNS S E,et al. Hydraulic conductivities and effective diffusion coefficients of geosynthetic clay liners with organobentonite amendments[J]. Geotextiles and Geomembranes,2005,23(5):385-400.
[15]	PAUMIER S,TOUZE F N. Hydraulic and chemical evolution of GCLs during filter press and oedopermeametric tests performed with real leachate[J]. Geotextiles and Geomembranes,2012,33(S C):15-24.
[16]	KANG J B,SHACKELFORD C D. Consolidation of a geosynthetic clay liner under isotropic states of stress[J]. Journal of Geotechnical and Geoenvironmental Engineering,2010,136(1):253-259.
[17]	NOROTTE V,DIDIER G,GUYONNET D,et al. Evolution of GCL hydraulic performance during contact with landfill leachate[C]//Advances in Geosynthetic Clay Liner Technology:2nd Symposium. Denver,Colorado,2004.
[18]	董兴玲,董书宁,王宝,等. 土工合成黏土衬垫对煤矸石渗滤液中Zn²⁺和Mn²⁺的吸附特性[J]. 煤炭科学技术,2017,45(12):7-12. DONG Xingling,DONG Shuning,WANG Bao,et al. Adsorption performance of Zn²⁺ and Mn²⁺ from coal gangue leachate on geosynthetic clay liners[J]. Coal Science and Technology,2017,45(12):7-12.
[19]	张文杰,刘颖,贾文强. 氯离子在黏土-膨润土屏障中迁移的离心试验研究[J]. 岩土力学,2015,36(8):2237-2242. ZHANG Wenjie,LIU Ying,JIA Wenqiang. Centrifuge study of migration of Cl-in clay-bentonite barriers[J]. Rock and Soil Mechanics,2015,36(8):2237-2242.
[20]	LI Yuanhui,GREGORY S. Diffusion of ions in sea water and in deep-sea sediments[J]. Geochimica et Cosmochimica Acta,1974,38(5):703-714.
[21]	SHACKELFORD C D,DANIEL D E. Diffusion in saturated soil. Ⅱ:Results for compacted clay[J]. Journal of Geotechnical Engineering,1991,117(3):485-506.
[22]	COTTEN T E,DAVIS M M,SHACKELFORD C D. Effects of test duration and specimen length on diffusion testing of unconfined specimens[J]. Geotechnical Testing Journal,1998,21(2):79-94.
[23]	CAMUR M,YAZICIGIL H. Laboratory determination of multicomponent effective diffusion coefficients for heavy metals in a compacted clay[J]. Turkish Journal of Earth Sciences,2005,14:91-103.
[24]	CHALERMYANONT T,ARRYKUL S,CHAROENTHAISONG N. Potential use of lateritic and marine clay soils as landfill liners to retain heavy metals[J]. Waste Management,2009,29(1):117-127.
[25]	何俊,郝国文. 黏土衬垫中渗透系数与扩散系数的关系[J]. 煤田地质与勘探,2007,35(6):40-43. HE Jun,HAO Guowen. Relationship between hydraulic conductivity and diffusion coefficient of clay liner[J]. Coal Geology & Exploration,2007,35(6):40-43.
[26]	何俊. 运移参数对GCL中污染物运移的影响研究[J]. 煤田地质与勘探,2005,33(6):42-45. HE Jun. Effect of transport parameters on contaminant transport through GCL[J]. Coal Geology & Exploration,2005,33(6):42-45.