Investigation of DNAPL migration and distribution characteristics based on modified light reflection image analysis method

被引：0

作者：

Gao, Yan-Wei ^{[1
]}

Zheng, Fei ^{[1
]}

Xu, Hong-Xia ^{[1
]}

Shi, Xiao-Qing ^{[1
]}

Sun, Yuan-Yuan ^{[1
]}

Wu, Ji-Chun ^{[1
]}

机构：

[1] School of Earth Sciences and Engineering, Nanjing University

来源：

Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2013年 / 38卷 / SUPPL.2期

关键词：

2-D sandbox; Groundwater; Hydrochemistry; Modified light reflection method; Saturated porous media; Saturation quantitative analysis;

D O I：

10.3799/dqkx.2013.S2.002

中图分类号：

学科分类号：

摘要：

Nowadays, PCE is chosen as typical DNAPLs and is injected into a two-dimensional sandbox. Modified light reflection method has been used to investigate PCE migration and quantify the distribution of PCE saturation. The results show that PCE moves mainly downward in homogeneous saturated porous media on condition of natural water flow velocity. PCE phase moves mainly downward by gravity. When reaching fine sand, PCE extends laterally and forms pools due to permeability barriers. Infiltration and distribution of PCE saturation obtained by MLRM match the experiment results well except at the beginning of infiltration. This paper shall facilitate further study of the DNAPL migration behavior in the heterogeneous porous media.

引用

页码：8 / 12

页数：4

共 11 条

[1]

Gao C.R., Wang J.T., Research on groundwater organic contamination characteristics in 69 cities of China, Acta Geoscientica Sinica, 32, 5, pp. 581-591, (2011)

[2]

Han B.P., Wang X.Y., Zhu X.Q., Et al., Groundwater contamination by carbon tetrachloride in karstic area in China, Acta Scientiae Circumstantiae, 24, 6, pp. 982-988, (2004)

[3]

Kamaruddin S.A., Sulaiman W.N.A., Rahman N.A., A review of laboratory and numerical simulations of hydrocarbons migration in subsurface environments, J. Environ. Sci. Technol., 4, 3, pp. 191-214, (2011)

[4]

Li H.L., Gao H., Analysis of organic pollutants in water, Chemical Analysis and Meterage, 12, 3, pp. 16-18, (2003)

[5]

Li H.M., Chen H.M., Zhong Z.S., Et al., Characteristics of chloroaliphatic hydrocarbons in shallow groundwater contaminated form lanfill leachates, Earth Science-Journal of China University of Geosciences, 27, 2, pp. 227-230, (2002)

[6]

Luciano A., Viotti P., Papini P.M., Laboratory investigation of DNAPL migration in porous media, J. Hazard. Mater., 176, pp. 1006-1017, (2010)

[7]

Niemet M.R., Selker J.S., A new method for quantification of liquid saturation in 2D translucent porous media systems using light transmission, Adv. Water Resour., 24, pp. 651-666, (2001)

[8]

O'carroll D.M., Bradford S.A., Abriola L.M., Infiltration of PCE in a system containing spatial wettability variations, J. Contam. Hydrol., pp. 39-63, (2004)

[9]

Schroth M.H., Ahearn S.J., Selker J.S., Et al., Characterization of miller-similar silica sands for laboratory hydrologic studies, Soil Sci. Soc. Am. J., 60, pp. 1331-1339, (1996)

[10]

Schincariol R.A., Herderick E.E., Sxhwartz F.W., On the application of image analysis to determine concentration distributions in laboratory experiments, J. Contam. Hydrol., 12, pp. 197-215, (1993)

← 1 2 →