浓度及渗流速度变化时污染物运移过程的求解

Abstract
Figure/Table
References
Related Citation (6)

Download: PDF (705 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract A theoretical solution suitable for the variable concentration of contaminant and seepage velocity with time was deduced using an analytical solution for steady-state situation. The proposed model was verified by comparing with the analytical solution in the case of steady state. Analytical results indicated that the calculation precision increases with the decrease of the interval of discrete time. A typical case showed that retardation factor had an obvious influence on the adsorption effect of contaminant. For example, when absorption factor was 1.7 and desorption factor was 1, the rate of adsorbed contaminant within porous medium could reach 30%. Moreover, the adsorption capacity of porous medium increased with the increase of the difference between adsorption factor and desorption factor. The peak value of the breakthrough curve of contaminant decreased with the increase of adsorption factor, and its occurrence time was relatively lagged. The degree of dispersion had little effect on the adsorption capacity, but had an apparent influence on the shapes of penetration curves.

Key words： transport of contaminant unsteady flow non-equilibrium adsorption porous medium migration process

Received: 07 June 2016

PACS:

X703.5

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	GUO Zhi-guang
	BAI Bing

Cite this article:

GUO Zhi-guang,BAI Bing. A solution for the migration process of contaminant in porous media considering the variation of concentration and seepage velocity[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(2): 613-619.

URL:

http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2017/V37/I2/613

[1]	Abdullah W S, Alshibli K A, Al-Zou'bi MS. Influence of pore water chemistry on the swelling behavior of compacted clays[J]. Applied Clay Science, 1999,15:447-462.
[2]	Pelley A J, Tufenkji N, Genuchten M T. Effect of particle size and natural organic matter on the migration of nano and microscale latex particles in saturated porous media[J]. Journal of Colloid and Interface Science, 2008, 321:74-83.
[3]	Rahman T, Millwater H, Shipley H. Modeling and sensitivity analysis on the transport of aluminum oxide nanoparticles in saturated sand:Effects of ionic strength, flow rate, and nanoparticle concentration[J]. Science of Total Environment, 2014,499:402-412.
[4]	陈云敏.环境土工基本原理及工程应用[J]. 岩土工程学报, 2014,36(1):1-46.
[5]	刘松玉,詹良通,胡黎明,等.环境岩土工程研究进展[J]. 土木工程学报, 2016,49(3):6-30.
[6]	Leij F J, Toride N, Genuchten M T. Analytical solutions for non-equilibrium solute transport in three-dimensional porous media[J]. Journal of Hydrology, 1993,151:193-228.
[7]	Wang H Q, Lacroix M, Masssei N, et al. Particle transport in porous medium:determination of hydrodispersive characteristics and deposition rates[J]. Earth and Planetary Sciences, 2000,331:97-104.
[8]	Ahfir N D, Wang H Q, Benamar A, et al. Transport and deposition of suspended particles in saturated porous media:hydrodynamic effect[J]. Hydrogeology Journal, 2007,15:659-668.
[9]	Altoe J E, Bedrikovetsky P, Siqueira A G, et al. Correction of basic equations for deep bed filtration with dispersion[J]. Journal of Petroleum Science and Engineering, 2006,51:68-84.
[10]	Lagdsmand M,Villholth K G, Ullum M, et al. Processes of colloid mobilization and transport in macroporous soil monoliths[J]. Geoderma, 1999,93:33-59.
[11]	Bai B, Xu T, Guo Z. An experimental and theoretical study of the seepage migration of suspended particles with different sizes[J]. Hydrogeology Journal, 2016,24(8):2063-2078.
[12]	陈子方,赵勇胜,孙家强,等.铅和铬污染包气带及再释放规律的实验研究[J]. 中国环境科学, 2014,34(9):2211-2216.
[13]	白冰,张鹏远,宋晓明,等.渗透作用下多孔介质中悬浮颗粒的迁移过程研究[J]. 岩土工程学报, 2015,37(10):1786-1793.
[14]	陈云敏,谢海建,柯瀚,等.层状土中污染物的一维扩散解析解[J]. 岩土工程学报, 2006,28(4):521-524.
[15]	李华伟,白冰,王梦恕,等.渗透作用下多孔介质中循环浓度污染物的迁移过程研究[J]. 岩土力学, 2015,36(5):1306-1312.
[16]	白冰,苏钟琴,杨海鹏.一种饱和粉质黏土的热固结特性试验研究[J]. 岩土力学, 2012,33(1):12-16.
[17]	Zhen Li, Endalkachew S D, Ashraf A H, et al. Transport and deposition of CeO2 nanoparticles in water-saturated porous media[J]. Water Research, 2011,4409-4418.
[18]	Amir T, Kurt D P, Linda M A. Modeling coupled nanoparticle aggregation and transport in porous media:A Lagrangian approach[J]. Journal of Contaminant Hydrology, 2015,172:48-60.
[19]	Scott A B, Mehdi B. Concentration dependent transport of colloids in saturated porous media[J]. Journal of Contaminant Hydrology, 2006,82:99-117.
[20]	Bai B, Li H W, Xu T, et al. Analytical solutions for contaminant transport in a semi-infinite porous medium using the source function method[J]. Computers and Geotechnics, 2015,69:114-123.
[21]	Chung H K, Kim W H, Park J, et al. Application of Langmuir and Freundlich isotherms to predict adsorbate removal efficiency or required amount of adsorbent[J]. Journal of Industrial and Engineering Chemistry, 2015,28:241-246.
[22]	Ashour A A, Soren T B, Saadullah G A, et al. Interaction of polar and nonpolar organic pollutants with soil organic matter:Sorption experiments and molecular dynamics simulation[J]. Science of the Total Environment, 2015,508:276-287.
[23]	李文静,李军,张彦灼,等. NaCl改性沸石对水中氨氮的吸附机制[J]. 中国环境科学, 2016,36(12):3567-3575.
[24]	Murray R S. Theory and Problems of Laplace Transforms[M]. New York:Mcgraw, 1965:245-254.
[25]	张富仓,康绍忠,潘英华.饱和-非饱和土壤中吸附性溶质水动力弥散试验研究[J]. 水利学报, 2002,3:84-90.
[26]	Massei N, Lacroix M, Wang H Q, et al. Transport of particulate material and dissolved tracer in a highly permeable porous medium:Comparison of the transfer parameters[J]. Journal of Contaminant Hydrology, 2002,57(1/2):21-39.