GAEA Technologies is very happy to announce the release of POLLUTE version 8.This is a significant upgrade to version 7 of POLLUTE and has a new much more intuitive user interface and many other new features.
The contaminant impact from sources such as landfills and spills will be dependent on the interaction between the engineered systems and the hydrogeology. Computer modeling may be used to simulate this interaction and to assess the probable contaminant impact of a contaminant source. In addition, computer modeling may be used to examine the effects of changes in the design and performance of the engineered systems, or the local hydrogeology.
The POLLUTEv8 program provides fast, accurate, and comprehensive contaminant migration analysis capabilities. This program implements a one and a half dimensional solution to the advection-dispersion equation.
Unlike finite element and finite difference formulations, POLLUTEv8 does not require a time-marching procedure, and thus involves relatively little computational effort while also avoiding the numerical problems of alternate approaches.
With more then thirty years utilization in industry, POLLUTEv8 is a well tested contaminant migration analysis program which is widely used in landfill design and remediation.
Landfill designs that can be considered range from simple systems on a natural clayey aquitard to composite liners, multiple barriers and multiple aquifers.
In addition to advective-dispersive transport, POLLUTEv8 can model:
initial concentration profile
radioactive and biological decay
transport through fractures
Models can be created from scratch or by selecting one of the many pre-created or user created templates: such as, Primary Liner Landfill, Primary and Secondary Liner Landfill, Vertical Migration, and Horizontal Migration.
Some of the new features of POLLUTEv8 are:
New models can be easily created using either a blank model or template.
The program comes with templates for a primary liner landfill, a primary and secondary liner landfill, vertical migration, and horizontal migration.
User created models can be saved as templates and used to create other models.
A new more intuitive user interface makes the creation and editing of models quicker and easier.
Results can be calculated automatically when a variable is changed.
Results can be displayed as a listing or chart.
Charts include depth vs concentration, concentration vs time, flux vs time, concentration vs depth vs time, and depth vs time.
Results can be exported to Excel.
Results from other models or Excel can be imported and overlain on charts.
Existing features of POLLUTEv8 include:
Layers can contain 1, 2, or 3 dimensional fractures.
The diffusion coefficient, distribution coefficient, and phase change parameter can be specified for each layer.
The top boundary condition can be zero flux, constant concentration, or finite mass.
The bottom boundary condition can be zero flux, constant concentration, fixed outflow, or infinite thickness.
The subsurface concentrations can be calculated at specified times or the time of the maximum concentration can be automatically found by the program.
Radioactive or biological decay of the contaminant can be modeled.
An initial concentration profile at specified depths can be specified.
Freundlich and Langmuir non-linear sorption can be modeled.
Source, velocities, and layer properties can be varied with time (can be used model changes in the source, barriers, or flow patterns).
One or more passive sinks can be specified to model horizontal velocities in layers and the removal of contaminants.
Monte Carlo simulation can be used to evaluate the effects of uncertainty of model parameters.
Sensitivity analysis can be used to predict the expected range of concentration when parameter values are not known accuratel