煤矸石基多孔基质对土壤溶质运移的影响
收稿日期: 2024-01-22
网络出版日期: 2024-09-26
基金资助
国家重点研发计划-政府间国际科技创新合作项目(2023YFE0100700);山西交控生态研发计划项目(2023-YF3);山西省基础研究计划-自然科学研究面上项目(202203021221032)
Effect of coal gangue-based porous matrix on soil solute transport
Received date: 2024-01-22
Online published: 2024-09-26
针对矿区存在的养分贫瘠、干旱缺水、表土缺乏等问题，提出了利用煤矸石制备多孔基质，并选择其作为矿区表土重构材料进行生态修复的思路，以及从溶质运移的角度评估其可行性。通过垂直土柱易混置换试验，研究了煤矸石基多孔基质对土壤中Cl-和Na+运移特征的影响，揭示了多孔基质对土壤孔隙分布、饱和土壤溶质运移的影响规律。结果表明，当多孔基质掺量为10%~30% （体积分数）时，会缩短Cl-和Na+的穿透时间，这是由于少量掺杂的多孔基质与土壤颗粒相互填充，小孔隙数量增加，形成了更为复杂的运移路径及多孔基质对Na+具有较强的吸附性，会延长Cl-和Na+的穿透时间；随着多孔基质添加量的继续增加（>30%），由于多孔基质容重较小，导致饱和导水率增加，反而会逐渐缩短Cl-和Na+的穿透时间。添加30%多孔基质时，出流液中的Cl-和Na+浓度分别降低了1.65%~46.30%和10.12%~32.88%，Cl-和Na+运移方式以对流为主。土壤孔隙分布和土壤对溶质的吸附性是影响溶质运移的主要因素。煤矸石基多孔基质和黄土以体积比为 3∶7混合的复配模式，可以有效减少溶质运移。
柴春镜 , 冯政君 , 吴海滨 , 史晓凯 , 张俊杰 , 宋慧平 . 煤矸石基多孔基质对土壤溶质运移的影响[J]. 无机盐工业, 2024 , 56(9) : 107 -116 . DOI: 10.19964/j.issn.1006-4990.2024-0040
The proposal was to address the issues of nutrient deficiency，drought，water scarcity，and lack of topsoil in mining areas by utilizing coal gangue to prepare a porous matrix.This matrix was then chosen as a substitute material for topsoil in ecological restoration.Furthermore，its feasibility was evaluated from the perspective of solute transport.The impact of coal gangue-based porous matrix on the migration characteristics of Cl- and Na+ in soil was investigated through vertical column miscible displacement experiments，revealing the influence patterns of porous matrix on soil pore distribution and solute transport in saturated soil.The results indicated that the penetration time of Cl- and Na+ was reduced when the content of the porous matrix ranged from 10% to 30%.It was due to the fact that the porous matrix with a small amount of doping filled the soil particles with one another，resulting in an increase in the number of small pores and the formation of a more complex migration path.Moreover，the porous matrix had a strong adsorption capacity for Na+，and thus the penetration time of Cl- and Na+ was prolonged.As the addition of porous matrix continued to increase（>30%），the lower bulk density of the porous matrix led to an increase in saturated hydraulic conductivity，which in turn shortened the breakthrough time for Cl- and Na+ gradually.The application of 30% porous matrix resulted in a decrement of Cl- and Na+ concentrations in the effluent by 1.65%~46.30% and 10.12%~32.88%，respectively.The transport of Cl- and Na+ was primarily governed by convection.The distribution of soil pores and the adsorptive properties of the soil were the major factors affecting solute transport.The compound mode of mixing coal gangue-based porous matrix with loess at a volume ratio of 3∶7 could effectively reduce solute transport.
Key words： porous matrix; solute transport; breakthrough curve; CDE model; coal gangue
| 1 | 胡振琪.矿山复垦土壤重构的理论与方法［J］.煤炭学报.2022，47（7）：2499-2515. |
| HU Zhenqi.Theory and method of soil reconstruction of reclaimed mined land［J］.Journal of China Coal Society，2022，47（7）：2499-2515. | |
| 2 | 郭拿拿，黄明斌，郭天崎，等.晋陕蒙地区土壤质地重构对土壤水力性质的影响［J］.水土保持通报，2023，43（4）：77-82. |
| GUO Nana， HUANG Mingbin， GUO Tianqi，et al.Effects of soil texture reconstruction on soil hydraulic properties in Shanxi-Shaanxi-Mongolia region［J］.Bulletin of Soil and Water Conservation，2023，43（4）：77-82. | |
| 3 | 郑鹏，党廷辉，薛江.粉煤灰、砒砂岩对煤矿排土场土壤水分特性改良的研究［J］.土壤学报，2023，60（2）：399-408. |
| ZHENG Peng， DANG Tinghui， XUE Jiang.Experimental study on the improvement of soil moisture characteristics of coal mine dump by fly ash and arsenic sandstone［J］.Acta Pedologica Sinica，2023，60（2）：399-408. | |
| 4 | 白东升.煤矸石堆积区生态重构模式与土壤水文性质优化的驱动要素［D］.绵阳：西南科技大学，2022. |
| BAI Dongsheng.Ecological reconstruction model and driving factors of soil hydrological properties optimization in gangue accumulation area［D］.Mianyang：Southwest University of Science and Technology，2022. | |
| 5 | 南益聪，杨永刚，王泽青，等.煤矸石对矿区土壤特性与植物生长的影响［J］.应用生态学报，2023，34（5）：1253-1262. |
| Yicong NAN， YANG Yonggang， WANG Zeqing，et al.Effects of coal gangue on soil property and plant growth in mining area［J］.Chinese Journal of Applied Ecology，2023，34（5）：1253-1262. | |
| 6 | 韩立鹤，尤勇刚，陆雅佩，等.模拟弃渣场不同重构土壤类型对高羊茅生长的影响［J］.西部林业科学，2023，52（4）：90-100. |
| HAN Lihe， YOU Yonggang， LU Yapei，et al.Effects of different reconstructed soil types on the growth of festuca elata in simulated slag field［J］.Journal of West China Forestry Science，2023，52（4）：90-100. | |
| 7 | 王乐，郭小平，韩祖光，等 ．基于废弃物的潞安煤矿废弃地改良土壤基质配比研究［J］.土壤，2020，52（1）：145-152. |
| WANG Le， GUO Xiaoping， HAN Zuguang，et al.Study on formula of soil substrates for improving abandoned lands in Lu′an coal mine［J］.Soils，2020，52（1）：145-152. | |
| 8 | 胡振琪，康惊涛，魏秀菊，等.煤基混合物对复垦土壤的改良及苜蓿增产效果［J］.农业工程学报，2007，23（11）：120-124. |
| HU Zhenqi， KANG Jingtao， WEI Xiuju，et al.Experimental research on improvement of reclaimed soil properties and plant production based on different ratioes of coal-based mixed materi-als［J］.Transactions of the Chinese Society of Agricultural Engineering，2007，23（11）：120-124. | |
| 9 | 杨曦，朱健，刘方，等.电解锰渣改良基质对牧草生长及锰、镉淋溶迁移的影响［J］.无机盐工业，2020，52（9）：73-78. |
| YANG Xi， ZHU Jian， LIU Fang，et al.Effect of modified electrolytic manganese slag substrate on growth of pasture and leaching migration of Mn and Cd［J］.Inorganic Chemicals Industry，2020，52（9）：73-78. | |
| 10 | 胡振琪，李勇，陈洋.黄河泥沙在生态修复中的作用机理与关键技术［J］.中国矿业大学学报，2022，51（1）：1-15. |
| HU Zhenqi， LI Yong， CHEN Yang.The mechanism and key technology of the Yellow River sediment in ecological rehabilitati-on［J］.Journal of China University of Mining & Technology，2022，51（1）：1-15. | |
| 11 | 张玉锴，阎凯，李博，等.中国土壤重构及其土水特性研究进展［J］.农业资源与环境学报，2023，40（3）：511-524. |
| ZHANG Yukai， YAN Kai， LI Bo，et al.Research progress on soil reconstruction and soil-water characteristics in China［J］.Journal of Agricultural Resources and Environment，2023，40（3）：511-524. | |
| 12 | 宋慧平，安全，申午艳，等.固废基土壤调理剂的制备及其矿区生态修复效果［J］.环境工程，2022，40（12）：187-195，230. |
| SONG Huiping， AN Quan， SHEN Wuyan，et al.Preparation of solid waste-based soil conditioners and their ecological remediation effects on the mining area［J］.Environmental Engineering，2022，40（12）：187-195，230. | |
| 13 | ZHEN Q， ZHENG J， ZHANG X，et al.Changes of solute transport characteristics in soil profile after mining at an opencast coal mine site on the Loess Plateau，China［J］.Science of the Total Environmennt，，2019，665：142-152. |
| 14 | GUO T， WANG Q， LI D，et al.Flow hydraulic characteristic effect on sediment and solute transport on slope erosion［J］.Catena，2013，107：145-153. |
| 15 | MIN L， SHEN Y， PEI H，et al.Water movement and solute transport in deep vadose zone under four irrigated agricultural land-use types in the North China Plain［J］.Journal of Hydrology，2018，559：510-522. |
| 16 | COMEGNA A， BELVISO C， RIVELLI A R，et al.Analysis of critical water flow and solute transport parameters in different soils mixed with a synthetic zeolite［J］.Catena，2023，228：107150. |
| 17 | DELIN G N， LANDON M K.Effects of topography on the transport of agricultural chemicals to groundwater in a sand-plain setting［J］.Hydrogelogy Journal，2002，10（4）：443-454. |
| 18 | OKADA E， COSTA J L， BEDMAR F，et al.Effect of conventional and no-till practices on solute transport in long term field trials［J］.Soil and Tillage Research，2014，142：8-14. |
| 19 | 邵明安，王全九，黄明斌.土壤物理学［M］.北京：高等教育出版社，2006：206. |
| 20 | WANG L， GIUSEPPE B， CHRISTIAN Z，et al.Experimental and simulated microplastics transport in saturated natural sediments：Impact of grain size and particle size［J］.Journal of Hazardous Materials，2024，468：133772. |
| 21 | ZHEN Q， MA W， LI M，et al.Effects of vegetation and physicochemical properties on solute transport in reclaimed soil at an opencast coal mine site on the Loess Plateau，China ［J］.Catena，2015，133：403-411. |
| 22 | ZHEN Q， ZHENG J， HE H，et al.Effects of Pisha sandstone content on solute transport in a sandy soil［J］.Chemosphere，2016，144：2214-2220. |
| 23 | 王果.土壤学［M］.北京：高等教育出版社，2009. |
| 24 | 白一茹，刘旭，张钰涵，等.生物炭对黄绵土中NO3 --N运移过程影响及模拟［J］.环境科学，2024，45（5）：2905-2912. |
| BAI Yiru， LIU Xu， ZHANG Yuhan，et al.Effect of biochar on NO3 --N transport in loessial soil and its simulation［J］.Environmental Science，2024，45（5）：2905-2912. | |
| 25 | 马小云，康小兵，王在敏，等.不同孔隙条件下饱和土壤内Cl-运移规律试验［J］.实验室研究与探索，2018，37（12）：30-33，67. |
| MA Xiaoyun， KANG Xiaobing， WANG Zaimin，et al.Cl- transport in saturated soils under different pore conditions［J］.Research and Exploration in Laboratory，2018，37（12）：30-33，67. | |
| 26 | PEI Y， HUANG L， LI D，et al.Characteristics and controls of solute transport under different conditions of soil texture and vegetation type in the water-wind erosion crisscross region of China’s Loess Plateau［J］.Chemosphere，2021，273：129651. |
| 27 | 李荣磊，陈留美，邵明安，等.黄土高原不同土质和植被类型下Cl-运移特征及影响因素［J］.土壤学报，2021，58（5）：1190-1201. |
| LI Ronglei， CHEN Liumei， SHAO Ming′an，et al.Cl- transport and its influencing factors in soil as affected by soil texture and vegetation cover in Loess Plateau［J］.Acta Pedologica Sinica，2021，58（5）：1190-1201. | |
| 28 | 王浩越，陈宏信，冯世进，等.非平衡吸附条件下双分子反应性溶质运移规律研究［J］.岩土工程学报，2023，45（12）：2547-2555. |
| WANG Haoyue， CHEN Hongxin， FENG Shijin，et al.Migration of bimolecular reactive solutes considering nonequilibrium sorpti-on［J］.Chinese Journal of Geotechnical Engineering，2023，45（12）：2547-2555. | |
| 29 | 吴军虎，任敏.羟丙基甲基纤维素作土壤改良剂对土壤溶质运移的影响［J］.农业工程学报，2019，35（5）：141-147. |
| WU Junhu， REN Min.Effect of hydroxypropyl methyl cellulose as soil modifier on solute migration in soil［J］.Transactions of the Chinese Society of Agricultural Engineering，2019，35（5）：141-147. | |
| 30 | 李晓宇，任仲宇，李芳春，等.两种吸附模型对阿特拉津在壤质砂土中的模拟效果分析［J］.农业环境科学学报，2020，39（1）：191-200. |
| LI Xiaoyu， REN Zhongyu， LI Fangchun，et al.Analysis of simulated migration of atrazine in a type of loamy sand based on two adsorption models［J］.Journal of Agro-Environment Science，2020，39（1）：191-200. | |
| 31 | KOLAHCHI Z， JALALI M.Simulating leaching of potassium in a sandy soil using simple and complex models［J］.Agricultural Water Management，2006，85（1-2）：85-94. |
| 32 | MAZLOOMI F， JALALI M.Effects of vermiculite，nanoclay and zeolite on ammonium transport through saturated sandy loam soil：Column experiments and modeling approaches［J］.Catena，2019，176：170-180. |
/
| 〈 |
|
〉 |
