EDI (Electrodeionization) Working Principle

EDI combines ion exchange and electrodialysis to continuously produce high-purity water without requiring chemical regeneration.

  • Ion Adsorption: Resins capture trace dissolved ions from RO permeate.
  • Electrical Migration: A direct current (DC) electric field drives the trapped ions through selective membranes into the concentrate stream.
  • Continuous Regeneration: The electric field splits water molecules into hydrogen ($H^+$) and hydroxyl ($OH^-$) ions, automatically and continuously regenerating the resin in real time.
  • Key Benefit: Chemical-free, continuous operation yielding ultra-pure water (up to 18.2 MΩ·cm).

Product Classification

Small Scale EDI System
Designed for laboratories or small point-of-use applications, featuring a compact, plug-and-play, and mobile structure.
Skid Mounted EDI System
Built with a modular skid design and factory pre-assembled for quick on-site installation, ideal for medium-to-large continuous industrial water supply.
Cabinet EDI System
Features a fully enclosed protective cabinet design that balances aesthetics with dust resistance, perfect for indoor locations requiring high cleanliness.

Frequently Asked Questions (FAQ)

How do you ensure accuracy for highly specialized or custom requirements?

We employ a “consultative design” approach. We align deeply with your technical team during the design phase, delivering PFDs and 3D layouts to ensure the system perfectly matches your specific process constraints.

How do you handle configuration or specification changes during a custom project?

We establish a project baseline during the “Solution Finalization” phase. If adjustments are needed after the baseline is locked, we conduct an engineering impact assessment and provide a supplemental agreement, ensuring full transparency in project timelines and costs.

How do you determine the brands of components (pumps, instruments, valves) for custom systems?

We adhere to a “transparency-first” principle. We provide a Bill of Materials (BOM) specifying the brand and model of all core components during the design phase, prioritizing Tier-1 global brands to ensure peak performance and global serviceability.

Which international standards does your equipment comply with?

We adhere to rigorous quality management systems (ISO9001). For export projects, we support manufacturing compliant with international standards such as CE, UL, and ASME to meet your specific regional regulatory requirements.

How is Factory Acceptance Testing (FAT) performed for custom equipment?

For custom systems, we execute rigorous Factory Acceptance Testing (FAT). Protocols are tailor-made for your unique requirements, and we invite you to witness critical test stages via remote video. A comprehensive test report is included in the shipment.

What is your typical lead time for custom projects?

Lead times depend on project scale and complexity. We clearly define key milestones—manufacturing, FAT, and shipping—in the contract to ensure transparent scheduling and timely project progression.

How do you provide support in case of technical issues or installation needs?

We provide 24/7 remote support via video guidance and online diagnostics. Senior engineers are available for on-site installation and commissioning services upon request.

How can we source consumables (membranes, resins, filters) for long-term maintenance?

We provide a comprehensive list of consumables upon delivery and offer full-lifecycle support. We ensure the regular supply of spare parts to prevent operational downtime.

Get in touch with us

Need a custom solution? Contact us today!

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