Recovering salts such as sodium chloride from a concentrate. Orientation only; EngiMetric models no crystallization or product-yield calculation.
- Information only
- Not quantitatively modeled
Electrodialysis ED
Electric-field separation of ions through ion-exchange membranes. Relevant to salt production from brine; not modeled.
Overview
Electric-field separation of ions through ion-exchange membranes. Relevant to salt production from brine; not modeled.
How it works
Separation mechanism and feed window. Needs conductive feed; performance degrades sharply at very low salinity.
What the process produces. A concentrate enriched in the target salt and a depleted diluate.
Energy. Electrical, proportional to the salt transferred.
Process sequence
Where this technology normally sits in a treatment train. The steps either side of it are documented in the Library as separate entries.
- Brine feed
- Ion-exchange membrane stack
- Diluate stream
- Concentrate stream
Typical applications
- Salt production from seawater or bittern
- Selective ion removal
Main equipment
- Membrane stack
- Electrode rinse system
- Recirculation pumps
- Power supply
Key design parameters
The parameters an engineer actually sets, and why each one drives the design. EngiMetric does not assume any of them.
| Parameter | Why it matters |
|---|---|
| Current density | Governs ion transfer rate. |
| Membrane area | Sets total transfer capacity. |
| Energy per tonne of salt | The commercial decision metric. |
Advantages
- Targets a specific salt rather than minimising total TDS.
- Strong commercial precedent in salt production.
Limitations
- Water recovery is limited.
- Not suitable for low-salinity polishing.
Engineering considerations
- EngiMetric has no ED engine and claims no current density or energy figures.
Status and EngiMetric support
Industry maturity and commercial status describe the technology itself. EngiMetric support and quantitative modeling describe what this platform does with it — and those two are read from the engineering registry at build time, so they cannot drift from the code.
- Engineering maturity
- Established How established the technology is in the industry. Not an EngiMetric claim.
- Commercial status
- Commercial Where the technology sits in the market. Not an EngiMetric claim.
- EngiMetric support
- Information only No execution-registry entry exists, so no support is claimed.
- Design engine
- No Whether the Plant Designer can carry this as a configured process step.
- Quantitative modeling
- Not quantitatively modeled No engine exists, so EngiMetric states no figure for this technology.
Not quantitatively modeled. EngiMetric publishes no energy, recovery, flux, capacity or cost figure for this technology. Every quantitative statement on this page comes from your own inputs or from an external source, never from a calculation on this platform.
Because no EngiMetric engine exists for Electrodialysis, this page deliberately contains no calculated figures. Any energy, recovery, flux or capacity value you need must come from a supplier, a published plant or your own analysis.