Electrodeionization (EDI)

Mueller Water's Electrodeionization (EDI) systems offer an advanced solution for producing ultra-pure water in applications where the highest water quality is essential. EDI is a chemical-free process that combines ion exchange resins, ion-selective membranes, and an electrical current to remove ions from water continuously. Our EDI systems are built with all necessary piping, valves, fittings, and automatic controls, providing a turnkey solution that integrates seamlessly into your water treatment processes.

How it Works

Electrodeionization (EDI) operates by passing water through a series of ion exchange resins and ion-selective membranes, which are positioned between an anode and a cathode. As water flows through the system, cations are attracted to the cathode and pass through the cation-exchange membrane, while anions move towards the anode and pass through the anion-exchange membrane. The ions are then removed from the water stream by an electrical current, which drives them across the membranes into concentrate streams that are continuously flushed out. This process eliminates the need for chemical regeneration, providing a continuous supply of deionized water without the interruptions associated with traditional ion exchange systems.

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Benefits

  • Chemical-Free Operation: EDI eliminates the need for acid and caustic chemicals used in traditional ion exchange regeneration, making it safer and more environmentally friendly.
  • Continuous Water Production: Provides a constant supply of high-purity water, ideal for processes that require uninterrupted operation.
  • High Water Quality: Produces water with very low conductivity, suitable for critical applications in industries such as pharmaceuticals, electronics, and power generation.
  • Low Operating Costs: Reduces operational costs by eliminating the need for chemical regenerants and minimizing waste.
  • Environmentally Friendly: Generates less wastewater and reduces the chemical footprint, supporting sustainability goals.