Model for efficiency of soil flushing using PVD-enhanced system

Journal Article · Fri Nov 01 00:00:00 EST 1996 · Journal of Geotechnical Engineering

DOI:https://doi.org/10.1061/(ASCE)0733-9410(1996)122:11(914)· OSTI ID:404476

Gabr, M A; Wang, J ^[1]; Bowders, J J ^[2]

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1. West Virginia Univ., Morgantown, WV (United States)
2. Univ. of Texas, Austin, TX (United States). Dept. of Civil Engineering

A predictive model for drain-enhanced soil flushing is developed and presented. Results from a parametric study indicate that, as the depth of the contaminated zone (H) increases, the time needed to attain 50% clean up level (t{sub 50}) increases. Results also indicated the sensitivity of the predicted contaminant concentrations to variations in the partition coefficient (K{sub d}) and radial and vertical dispersivity ({alpha}{sub r} and {alpha}{sub z}). For the case of {alpha}{sub z} = 1 m, t{sub 50} is evaluated equal to 42 h, while a t{sub 50} of 55 h is predicted for {alpha}{sub z} = 0.1 m. The estimated t{sub 50} increases from 37 h for {alpha}{sub r} = 10 m to 61 h for {alpha}{sub r} = 0.1 m. Analyses and results presented in this paper indicate the feasibility of using the proposed model to predict soil flushing rate using PVD-enhanced system.

• OSTI ID: 404476
• Journal Information: Journal of Geotechnical Engineering, Vol. 122, Issue 11; Other Information: PBD: Nov 1996
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
SOILS
REMEDIAL ACTION
DRAINAGE
FLOW MODELS
WASHING
IN-SITU PROCESSING