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High-Purity EDI Water System Suppliers in China | Advanced Electrodeionization Technology from Factory

Discover the revolutionary EDI high-purity water equipment (Electrodeionization) from leading China suppliers. This cutting-edge technology combines electrodialysis and ion exchange within a membrane separation and desalination process, providing an eco-friendly and efficient solution for water treatment. EDI high-purity water equipment offers continuous discharge, eliminates the need for acid and base regeneration, and can operate unattended, making it an ideal choice for various industries like pharmaceuticals, electronics, power, and chemicals. As an innovative advancement, this technology is rapidly replacing mixed beds in pure water systems. With over 3,000 EDI devices operational internationally, boasting a total capacity exceeding 30,000 M/H, our factory is at the forefront of the green industry transformation in water treatment technology. Experience superior environmental protection and unparalleled ease of operation with our state-of-the-art EDI systems.

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    Product Details

    Products Video

    Products Description

    EDI technology substitutes the traditional hybrid ion exchange demineralization process (DI) with an electroregenerative ion exchange demineralization process. High desalination efficiency is achieved through the combined action of ion exchange resin and selective ion membranes, complemented by reverse osmosis to produce water of ultra-high quality, reaching resistivity levels of 10~15MΩ·CM.
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    How EDI High-Purity Water Equipment Works

    1
    Electrodialysis

    Under the influence of a direct current electric field, ions in water migrate toward oppositely charged electrodes and are separated by selective ion exchange membranes.

    2
    Ion Exchange

    The EDI module is filled with ion exchange resin, which absorbs ions from water and further removes impurities.

    3
    Regeneration

    The ion exchange resin within the EDI module undergoes continuous regeneration under the electric field, eliminating the need for chemical regenerants and enabling continuous operation.

    Composition of EDI High-Purity Water Equipment

    1
    Pre-treatment System

    Includes multi-media filters, activated carbon filters, softeners, etc., designed to remove suspended particles, organic matter, and hardness ions from water.

    2
    Reverse Osmosis System (RO)

    Acts as pre-treatment for EDI, removing most ions and organic matter from water.

    3
    EDI Module

    The core component that utilizes electrodialysis and ion exchange technology to remove trace ions from water.

    4
    Post-treatment System

    Incorporates UV sterilizers and precision filters to ensure the final water quality meets stringent purity standards.

    Conditions of Use

    Water Source RO water production, conductivity 1-20μs/cm, maximum conductivity ≤30μs/cm (NaCl)
    Inlet Hardness < 1.0ppm (CaCO3) (recommended below 0.5ppm)
    Total CO2 < 3ppm
    pH Value 7.5-9
    Influent Organic Matter TOC < 0.5ppm
    Influent Oxidizer Cl2 (active) < 0.03ppm, O3 (ozone) < 0.02ppm
    Influent Heavy Metal Ions Fe, Mn, variable valence metal ions < 0.01ppm
    Inlet Silicon SiO2 < 0.5ppm
    Inlet Water Particle Size < 1μm
    Temperature 15℃--35℃
    Inlet Pressure (DIN) 0.15-0.4MPa
    Concentrated Water Inlet Pressure (CIN) 0.10-0.3MPa
    Water Production Pressure (DOUT) 0.05-0.25MPa
    Concentrated Water Outlet Pressure (COUT) 0.02-0.2MPa

    Application Fields

    ■
    Electronics Industry
    For the preparation of ultra-pure water in semiconductor and integrated circuit production processes.
    ■
    Power Industry
    Used for boiler feedwater, cooling water, and other applications.
    ■
    Pharmaceutical Industry
    For injection water, cleaning water, and similar uses.
    ■
    Chemical Industry
    For the production of high-purity chemicals.
    The EDI device is typically placed after an electrodialyzer or reverse osmosis system (or directly applied to low-salt-content water), replacing ion exchangers to achieve further desalination and produce higher-purity water. It finds widespread application in electronics, chemicals, pharmaceuticals, atomic energy, and power industries.

    Frequently Asked Questions (FAQ)

    Q1 What is EDI technology and how does it replace traditional DI processes?
    EDI (Electrodeionization) technology replaces traditional hybrid ion exchange demineralization (DI) by utilizing a combination of ion exchange resin and selective ion membranes under an electrical field to continuously desalinate water without needing chemical regeneration.
    Q2 What resistivity levels can be achieved with EDI high-purity water equipment?
    When complemented by reverse osmosis (RO), EDI high-purity water equipment can produce ultra-high-quality water reaching resistivity levels of 10~15MΩ·CM.
    Q3 Does EDI equipment require chemical regenerants?
    No. The ion exchange resin inside the EDI module undergoes continuous electrochemical regeneration under a direct current electric field, eliminating the need for hazardous chemical regenerants and enabling continuous operation.
    Q4 What are the feed water requirements for the EDI system?
    The system requires RO-treated feed water with a conductivity of 1-20μs/cm (max ≤30μs/cm), hardness < 1.0ppm (recommended below 0.5ppm), TOC < 0.5ppm, and a temperature range of 15℃ to 35℃.
    Q5 What industries benefit most from EDI high-purity water equipment?
    EDI systems are widely implemented in the electronics industry (semiconductors), power industry (boiler feed), pharmaceuticals (injection water), chemical processing, and atomic energy industries.

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