For industrial applications requiring the highest standards of water purity, the Avantech EDM-Series Electrodeionization System stands as a premier solution. As a chemical-free polishing technology, this system is designed to replace traditional mixed-bed deionization, offering a continuous, cost-effective, and environmentally safe method for producing ultrapure water.
At Purecowater, we specialize in comprehensive filtration and engineered solutions. The Avantech EDM-Series integrates advanced ion-exchange membranes and resin technology to deliver consistent water quality for power generation, pharmaceutical manufacturing, and microelectronics.
What is the Avantech EDM-Series?
The Avantech EDM-Series is a modular electrodeionization (EDI) system. It is situated downstream of a Reverse Osmosis (RO) unit to “polish” the permeate, removing residual ionized species that RO membranes cannot catch. Unlike conventional resin tanks that require downtime for acid/caustic regeneration, the EDM-Series uses electricity to continuously regenerate its internal resin beds.
How It Works
The process utilizes a combination of semi-permeable membrane media and ion-exchange resins sandwiched between two electrodes (anode and cathode). When a DC electrical potential is applied:
- Ion Migration: Dissolved ions (impurities) are attracted to their respective electrodes—positive ions (cations) move toward the cathode, and negative ions (anions) move toward the anode.
- Separation: Ion-selective membranes allow these ions to pass into a concentrate stream while blocking water molecules, effectively trapping the impurities and flushing them away.
- Continuous Regeneration: The electric current splits water molecules into H+ and OH- ions, which continuously regenerate the resin beads. This eliminates the need for chemical regeneration cycles.
Key Advantages of the EDM-Series
| Feature | Benefit |
|---|---|
| Chemical-Free Operation | Eliminates the handling, storage, and disposal of hazardous acids and caustic soda. |
| Consistent Purity | Produces water consistently up to 18.2 MΩ-cm, avoiding the quality fluctuations seen in batch mixed-bed resin exhaustion. |
| Compact Footprint | Modular stack design occupies significantly less space than complex ion-exchange vessel trains. |
| Low Operating Cost | Low energy consumption and no chemical costs result in a rapid ROI. |
This system is particularly effective at removing weakly ionized species such as Carbon Dioxide (CO2), Silica, and Boron, which are critical contaminants to control in high-pressure boilers and semiconductor washing.
Technical Specifications
The EDM-Series is engineered for robust performance and flexibility. Below are standard operating parameters for the series.
| Product Quality (Resistivity) | > 16 MΩ-cm (up to 18.2 MΩ-cm) |
| Silica Removal | 90% – 99% |
| Typical Recovery | 90% – 95% |
| Feed Water Source | RO Permeate |
| Maintenance Frequency | Minimal (CIP recommended annually) |
Target Applications
The Avantech EDM-Series is built to serve industries where water purity is non-negotiable:
- Power Generation: Boiler feed water for high-pressure steam turbines.
- Pharmaceuticals/Biotech: USP Purified Water and WFI (Water for Injection) systems.
- Microelectronics: Semiconductor rinsing and component manufacturing.
- Laboratories: Centralized ultrapure water distribution.
Integration with Purecowater
As a distributor and OEM for industry leaders like Veolia and Fil-trek, Purecowater ensures that your Avantech EDM-Series is perfectly sized and integrated into your existing treatment train. We can pair this unit with our Reverse Osmosis Units and pre-treatment filtration to maximize the lifespan of the EDI modules.
Whether you are upgrading an aging mixed-bed deionizer or designing a new facility, our Engineered Solutions team is ready to assist.