Specify domain’s starting fluid composition on the Initial pane

Slides:

Advertisements

Similar presentations

Groundwater Flow Equations

Advertisements

Click “NEW”. Adjust Dimensions Set Chemistry Currently we have Media_0, Click on each media name to view and supply its chemistry, i.e., add (1) Media_0.

Simulation lasts 30 years Aquifer is 70% Quartz Specify domain’s starting fluid composition on the Initial pane Initial fluid in equilibrium with Quartz.

K d, Freundlich, and Langmuir isotherms. File → New → Sorbing Surfaces → Kd Pull aqueous species from a thermo dataset Enter a unique identifier for the.

River Systems - Runoff.

Enter your fluid composition on the Basis pane. SpecE8 figures concentrations of aqueous and sorbed species, mineral saturation, and gas fugacity. Go to.

Plot → Map View Switch to map view to enable color maps, color masks, or contour plots.

Week 2 Terminology + Hydraulics review. Terms Porosity Porosity Moisture content Moisture content Saturation Saturation Aquifer Aquifer Aquitard Aquitard.

Specify flow rate on the Domain pane. GWB will use Darcy’s law to calculate discharge from the viscosity, permeability, and driving force. You can set.

Talal Almeelbi Surface Complexations of Phosphate Adsorption by Iron Oxide.

Enter your initial fluid composition on the Basis pane, then go to the Reactants pane to create a reaction path. Choose the type of kinetic reaction.

Fluid 1: Cold, oxygenated seawater T = 4 °C Specify fluid composition and T on the Basis pane Run → Go to equilibrate the fluid Add new species.

Cross Section of Unconfined and Confined Aquifers

Clean water Start and end times of two reaction intervals Specify domain’s starting fluid composition on the Initial pane.

X1t models reactive transport in groundwater flows in one linear or radial coordinate. Set initial fluid composition and mass of sorbing mineral Fe(OH)

Minerals and water ーPHREEQC programsー

Variably Saturated Flow and Transport: Sorbing Solute.

Specify chemical composition of fluid and formation minerals from the Initial pane. Set initial temperatureSet starting and ending times.

Specify domain’s starting fluid temperature on the Initial pane Porewater temperature is 40 °C.

19 Basics of Mass Transport

Initial chemical composition and temperature can vary across the domain. Click on a “+” button to enter heterogeneity data for any field variable: ● enter.

Decouple reaction between carbonate and Benzene(aq), other forms of carbon. Config → Redox Couples… Default setting: all redox reactions are coupled.

(Z&B) Steps in Transport Modeling Calibration step (calibrate flow & transport model) Adjust parameter values Design conceptual model Assess uncertainty.

Right-click on unit field to convert units GSS is a spreadsheet for manipulating and plotting geochemical data.

Porewater temperature is 40°C Specify domain’s starting fluid temperature on the Initial pane.

Surface complexation retards Pb ++ transport relative to nonreactive tracer Br −. Use Xtplot to display the concentration of several species along the.

Variable inlet chemistry. Inlet fluid “contaminated” enters the domain from t = 0 to 2 years Inlet fluid “flush” enters the domain from t = 2 to 10 years.

Pulse of Benzene contaminated water is attenuated by biodegradation. X1t models reactive transport in groundwater flows in one linear, radial, or spherical.

Balance chemical reactions. Start by choosing a species to appear on the left side of the reaction. Move to the Results pane. Rxn writes a reaction with.

Groundwater movement Objective To be able to calculate the hydraulic conductivity of a sample given measurements from a permeameter To be able to evaluate.

Substrate combines with enzyme to form activated complex, which can decay to give catalytic product Michaelis-Menten equation gives rate of forward reaction.

Acid drainage is a persistent environmental problem in many mineralized areas, especially where mining has taken place. Not all drainage, however, is.

Decouple reaction between carbonate and acetate, carbonate and methane, and sulfate and sulfide. Config → Redox Couples… Default setting: all redox reactions.

Set the initial fluid composition on the Basis pane. Dilute fluid, pH 5 Click to add components to the fluid.

Clean water Specify starting fluid composition on the Initial pane.

Specify coordinate system on the Domain pane.

Specify kinetic rate laws for mineral precipitation and dissolution (and other reaction types) on the Reactants pane. Use Arrhenius equation to calculate.

Enter your fluid composition on the Basis pane

File → Open → Thermo Data…

Lecture 1 CHEMICAL COMPOSITION OF PLANT AND ANIMAL BODIES Plant and Animal bodies consists of: Water Organic acids (carbohydrates, lipids, proteins, complexes.

Config → Redox Couples…

Balancing reactions O (aq) reacted (mmolal) Some species (mmolal) 200

Advanced Contaminant-Transport Techniques

Steady flow in a confined aquifer

Set the simulation’s duration

You control discretization on the Domain pane.

Specify domain’s starting fluid composition on the Initial pane

Specify domain’s starting fluid composition on the Initial pane

Set the initial fluid composition on the Basis pane.

Specify domain’s starting fluid composition on the Initial pane

X position (m) I s o t p i c m n C , d a y Bulk fluid CO (aq)

The Intervals pane sets the total duration of the simulation.

The Initial fluid has negligible Pb2+ everywhere but the central node

Set the composition of the initial fluid on the Basis pane.

Specify domain’s starting fluid composition on the Initial pane

Two-layer datasets.

Default setting: all redox reactions are coupled.

pH Saturation, some minerals (Q/K) , Ÿ œ + › Amrph^ silica Chalcedony

Anisotropy – Key ideas Effective conductivity that represents aggregate effect of flow through a layered system Effective conductivity is different parallel.

Config → Dual Porosity… Run → Go

Chapter Four: Energy transfer by Heat, Work and Mass

Determine the storage coefficient

Add and delete entries.

Specify fluid composition and T on the Basis pane

Chapter 4 Boundaries.

Some fluid components (mmol/kg)

Swap sorbing mineral into the basis

Config→ Redox couples…

Modeling Water Treatment Using the Contaminant Transport Module

Presentation transcript:

Specify domain’s starting fluid composition on the Initial pane Pb++ will complex with ferric hydroxide mineral in the aquifer. Clean water

Define the reaction intervals Define the reaction intervals. Specify what fluids flow into the domain, and when. A single inlet fluid flows into the domain for 10 years. Click to add a new reaction interval

The inlet fluid is defined on the Fluids pane Inlet fluid carries Pb++ and nonreactive Br− into the domain

Specify domain size and gridding on the Domain pane. Domain is 1 km long, divided into 400 nodal blocks

Specify flow rate on the Flow pane. Set specific discharge or hydraulic head/ potential drop

Set various mass transport properties on the Medium pane.

File → Open → Sorbing Surfaces… Surface complexation dataset for hydrous ferric oxide. Mobility defaults to 0, indicating HFO is not transported. You can add any number of sorbing surfaces.

Surface complexation retards Pb++ transport relative to nonreactive tracer Br−.