Fully Automatic Electric Deionization Filtration Water Reverse Osmosis With Water Tank System

Product description

1. Core Components and Roles​​

​​A. Reverse Osmosis (RO)​​

• ​​Role​​:
  • ​​Initial Purification​​: Removes dissolved salts, heavy metals (e.g., lead, arsenic), and organic contaminants via semi-permeable membranes (>95–99% rejection rate).
  • ​​Pre-Treatment for EDI​​: Protects EDI modules by filtering out particulates and reducing TDS (total dissolved solids).
• ​​Mechanism​​:
  • High-pressure pumps force water through RO membranes, rejecting ions and particles.
• ​​Applications​​:
  • Boiler feedwater, pharmaceutical manufacturing, and seawater desalination.

​​B. Electric Deionization (EDI)​​

• ​​Role​​:
  • ​​Ultra-Pure Water Polishing​​: Removes residual ions (e.g., sodium, chloride) and trace organics via ion-exchange membranes and electric current.
  • ​​Chemical-Free Regeneration​​: Eliminates the need for salt or acid/alkali regeneration (unlike traditional ion exchange).
• ​​Mechanism​​:
  • Mixed-bed ion-exchange resins and ion-selective membranes are energized by direct current (DC), driving ions into concentrate streams.
• ​​Applications​​:
  • Semiconductor fabrication, lab water, and biopharmaceuticals.

​​C. Pre-Filtration System​​

• ​​Role​​:
  • ​​Protection and Pre-Cleaning​​: Removes suspended solids, chlorine, and organics to prevent RO/EDI fouling.
  • ​​Stages​​:
    1. ​​Sediment Filters​​: Remove particulates (5–100 µm).
    2. ​​Carbon Filters​​: Adsorb chlorine, chloramines, and VOCs.
    3. ​​Microfiltration (MF) or Ultrafiltration (UF)​​: Eliminates colloids and bacteria.

​​D. Automated Control System​​

• ​​Role​​:
  • ​​24/7 Monitoring​​: Manages pump pressure, flow rates, and alerts via PLC/SCADA.
  • ​​Self-Cleaning​​: Automates backwashing for prefilters and EDI module flushing.

​​E. Pure Water Tank​​

• ​​Role​​:
  • ​​Storage​​: Holds treated water at consistent quality for immediate use.
  • ​​Optional Post-Treatment​​: May include UV disinfection or ozone for added safety.

​​2. System Integration and Workflow​​

1. ​​Pre-Filtration​​:
   • Sediment → Carbon → MF/UF to protect RO membranes.
2. ​​Reverse Osmosis​​:
   • Reduces TDS and rejects bulk contaminants.
3. ​​EDI Polishing​​:
   • Removes residual ions and trace organics to achieve resistivity >18 MΩ·cm (ultrapure standard).
4. ​​Storage​​:
   • Treated water is stored in a tank with optional UV/Ozone for disinfection.

​​Key Applications​​:

• ​​Pharmaceuticals​​: Water for injection (WFI) and CIP (clean-in-place) systems.
• ​​Semiconductors​​: Ultrapure water for wafer rinsing.
• ​​Power Plants​​: Boiler feedwater to prevent scaling/corrosion.

​​3. Benefits of the Integrated System​​

• ​​Ultra-Pure Output​​:
  • Combines RO’s bulk contaminant removal with EDI’s ion precision, ideal for critical processes.
• ​​Cost Efficiency​​:
  • Eliminates chemical regeneration (vs. traditional ion exchange), reducing operational costs.
  • High membrane lifespan due to pre-filtration and automated maintenance.
• ​​Automation​​:
  • Minimizes manual intervention and human error.
  • Adapts to fluctuating feedwater quality via real-time sensor adjustments.
• ​​Sustainability​​:
  • Reduces brine waste (vs. RO alone) through EDI’s concentrate recycling options.
  • Lowers carbon footprint with energy-efficient pumps and no chemical use.

​​4. Challenges and Solutions​​

​​5. Economic and Environmental Impact​​

• ​​Cost Savings​​:
  • Eliminates bottled water purchases and reduces sludge disposal costs.
  • Lowers energy use via efficient pumps and ERDs.
• ​​Environmental Benefits​​:
  • Minimizes plastic waste and chemical discharge.
  • Reusable brine in non-potable applications (if permitted).

​​6. Applications​​

• ​​Industrial Manufacturing​​: Cooling towers, boiler feedwater, and process water.
• ​​Healthcare​​: Sterile water for dialysis and surgical tools.
• ​​Food & Beverage​​: Safe water for production and cleaning.

​​Conclusion​​

This ​​Fully Automatic RO + EDI System​​ is a cutting-edge solution for industries requiring ultra-pure water. By integrating pre-filtration, RO, EDI, and automation, it ensures consistent, chemical-free water quality while optimizing energy and cost efficiency. Despite higher upfront costs, its long-term savings, scalability, and sustainability make it indispensable for sectors where purity and reliability are non-negotiable.