Display of Results ( Part I)
The results of the hydrochemical calculations are presented one by one in different ways:
In the following we take the example water ‘C9’.1
Charge-Balance Error
The very first output is the C.B.E. – as shown on the right.
Before the next calculation, the user can select a parameter (either the pH or a chemical element) to be adjusted to achieve full charge balance. In this example, DIC will be adjusted.
Overview Scheme
The right panel displays the major changes after charge-balance adjustment and chemical equilibrium. From left to right are displayed:
- Input – the input water (raw data)
- Output 1 – the calculated solution after charge-balance adjustment
- Output 2 – the calculated solution after charge-balance adjustment and chemical equilibrium with mineral phases (including redox equilibria)
In this example calcite precipitates, therefore, Output 1 and Output 2 differ in the pH and DIC.
Output Tables
In hydrochemistry, typical solutions are characterized by dozens of physico-chemical parameters. For this purpose aqion provides three tables:
- main table with pH, pe, EC, … , and all elements (as shown below)
- table Ions with a large number of aqueous species (ions and complexes)2
- table Minerals for the amount of precipitated and dissolved minerals (if any) and saturation indices
Main Table. The three columns in each table refer to three solutions: Input water, Output 1 and Output 2. More information is given here.
Ions. Besides the main water composition (above screenshot), for each input and output water the complete aqueous speciation is displayed here:
Minerals. The table below shows the amount of precipitation and saturation indices (SI) of relevant mineral phases:
Footnotes