Numerical and experimental analyses of the use of double vertical barrier walls for groundwater protection

The technology of treatment through landfarming for oily wastes has been more and more often utilized in Brazil, always successfully. The definition, the processes which occur, as well as the factors which affect its performance are herein presented. Design parameters, such as location, ground characterization, dimensioning of the area of application, groundwater protection, drainage, treatment of surface runoff water and percolated liquid, among others, are presented. Operational procedures and quality monitoring of effluents and environment are also described. PETROBRÁS is already operating two landfarming systems and has several others in the design stage. We present data from these projects and report that oily waste degradation has been achieved in around six months. Finally, we expect to be contributing to the affirmation and development of this technology in our Country.

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Approximate analysis of the containment of contaminated sites prior to remediation

Water Science & Technology ◽

10.2166/wst.2000.0332 ◽

2000 ◽

Vol 42 (1-2) ◽

pp. 319-324 ◽

Cited By ~ 1

Author(s):

H. Rubin ◽

A. Rabideau

Keyword(s):

Steady State ◽

Peclet Number ◽

Dimensionless Parameter ◽

Contaminated Sites ◽

Unsteady State ◽

Péclet Number ◽

Vertical Barrier ◽

Time Period ◽

Barrier Performance ◽

Vertical Barriers

This study presents an approximate analytical model, which can be useful for the prediction and requirement of vertical barrier efficiencies. A previous study by the authors has indicated that a single dimensionless parameter determines the performance of a vertical barrier. This parameter is termed the barrier Peclet number. The evaluation of barrier performance concerns operation under steady state conditions, as well as estimates of unsteady state conditions and calculation of the time period requires arriving at steady state conditions. This study refers to high values of the barrier Peclet number. The modeling approach refers to the development of several types of boundary layers. Comparisons were made between simulation results of the present study and some analytical and numerical results. These comparisons indicate that the models developed in this study could be useful in the design and prediction of the performance of vertical barriers operating under conditions of high values of the barrier Peclet number.

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Y-12 Groundwater Protection Program Monitoring Optimization Plan for Groundwater Monitoring Wells at the U.S. Department of Energy Y-12 National Security Complex

10.2172/897429 ◽

2006 ◽

Author(s):

Keyword(s):

National Security ◽

Groundwater Monitoring ◽

Groundwater Protection ◽

Department Of Energy ◽

Monitoring Wells ◽

Program Monitoring ◽

The U.S

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