EDI Module (Continuous Electrodeionization Stack — Ampure)

■ Overview
Ampure EDI modules (continuous electrodeionization stacks) are the core ultra-pure-water equipment of Beijing Wanyiyuan, including the AP, AP-S, AI and AS series. Combining electrodialysis and ion exchange, the modules auto-regenerate the resin with H⁺/OH⁻ from water dissociation, producing ultra-pure water continuously without acid/alkali regeneration. They feature low operating resistance, low driving force, low energy consumption, large resin loading and strong tolerance to feed fluctuation.

■ Working principle
Under a DC electric field, ion-exchange resin continuously migrates ions in the feed water, while the H⁺/OH⁻ generated from water dissociation regenerates the resin on-line. The module "produces water while regenerating," giving continuous, stable output without shutdown or chemicals—clean and environmentally friendly.

■ Technical parameters
Product water resistivity: 5.0–18.0 MΩ·cm
Permeate flow: 0.3–10.2 m³/h (AP-500 to AP-7000)
Recovery: 90–95%
Operating voltage: 10–280 V; current: 1–4 A
Feed pressure: 0.06–0.3 MPa; concentrate/electrode pressure: 0.01–0.06 MPa
Feed requirements: conductivity 1–40 μS/cm; hardness <1.0 mg/L; temperature 5–35°C; pH 6–9; CO₂ <5 mg/L; SiO₂ <0.2 mg/L; TOC <0.5 mg/L; Fe/Mn and oxidants <0.01 mg/L; SDI <1
Connections: product water DN25/DN32 female thread; concentrate/electrode DN20 female thread
Power consumption: ~20 W per ton
Certification: CE, RoHS

■ Features
1. No acid/alkali regeneration; auto-regeneration and continuous operation—clean and green
2. Low operating resistance and driving force; energy-saving, ~20 W per ton
3. Large resin loading, strong resistance to feed fluctuation, stable output
4. Fully modular design with top-grade raw materials and processes
5. Resistivity up to 18.0 MΩ·cm; recovery up to 90–95%
6. CE and RoHS certified for reliable quality

■ Applications
Semiconductor/electronics ultra-pure water, biopharmaceutical purified water, power-plant demineralized water, chemical, new energy and hydrogen industries.

■ Service
Free operation simulation calculation, process drawings and assembly drawings; on-site training; 7×24 remote guidance; extended warranty.