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500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 1
500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 2
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500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 1
500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 2
500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 3
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500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems

This compact skid-mounted ultrapure water system has a rated flow rate of 0.5 m³/h (500 L/h). It employs an all-membrane process combining pretreatment + two-stage reverse osmosis (RO) + continuous electrodeionization (EDI), consistently producing ultrapure water with a resistivity of up to 15–18.2 MΩ·cm.

Designed specifically for timed or non-continuous operation, the system features a high level of integration and a small footprint, making it ideal for industries with stringent water quality requirements such as electronics & semiconductors, photovoltaics, pharmaceuticals, laboratories, fine chemicals, and surface treatment.
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    Core Treatment Process

    Raw Water → Quartz Sand Filtration → Activated Carbon Filtration → Ion Exchange Softening → 5 μm Precision Filtration → 1st-Stage RO → 2nd-Stage RO → EDI → Ultrapure Water

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 7
    ⚙️ Quartz Sand Filtration
    Removes suspended solids, sediment, rust, and large particulate matter, reducing feedwater turbidity and protecting downstream membrane elements.
    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 8
    ⚙️ Activated Carbon Filtration
    Adsorbs residual chlorine, organic compounds, odors, and color, preventing oxidative degradation of RO membranes and extending membrane service life.
    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 9
    ⚙️ Ion Exchange Softening
    Removes Ca²⁺/Mg²⁺ ions to reduce water hardness and prevent RO membrane scaling. With feedwater hardness up to 8 mmol/L, effluent hardness remains stable at ≤0.03 mmol/L.
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    ⚙️ Precision Cartridge Filtration (5 μm)
    Final security filtration before RO intake, trapping fine particles carried over from pretreatment to protect the high-pressure pump and membrane elements.
    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 11
    ⚙️ 1st-Stage Reverse Osmosis (RO)
    Primary desalination stage, removing ≥98% of dissolved salts, heavy metals, bacteria, and macromolecular organics. Permeate conductivity is typically ≤10 μS/cm.
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    ⚙️ 2nd-Stage Reverse Osmosis (RO)
    Further desalination using 1st-stage RO permeate as feedwater, removing residual ions and CO₂. Permeate conductivity reaches ≤2 μS/cm, providing stable and qualified feedwater for EDI.
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    ⚙️ EDI (Continuous Electrodeionization)
    Uses an electric field to directionally migrate residual ions and continuously remove them through ion-exchange membranes. Without chemical regeneration, it produces ultrapure water with resistivity ≥15 MΩ·cm (up to 18.2 MΩ·cm), delivering consistent water quality throughout the operating period.

    Technical Specifications

    Parameter Specification
    Rated Permeate Flow 0.5 m³/h (500 L/h)
    Operation Mode Timed operation / on-demand operation (non-24-hour continuous operation)
    Treatment Process Pretreatment (sand filter → carbon filter → softener) → precision filtration → 1st-stage RO → 2nd-stage RO → EDI
    Max. Feedwater Hardness ≤8 mmol/L (as CaCO₃)
    1st-Stage RO Salt Rejection ≥98% (TDS)
    2nd-Stage RO Permeate Conductivity ≤2 μS/cm
    EDI Permeate Resistivity ≥15 MΩ·cm (up to 18.2 MΩ·cm)
    Pretreatment Tank Material FRP (fiberglass reinforced plastic), with automatic multi-port valves
    RO Membrane Housing / Frame Material 304 stainless steel
    Control System Push-button control panel + automatic multi-port valves + online conductivity/resistivity monitoring
    RO Operating Pressure 1st stage: 0.7-1.0 MPa; 2nd stage: 0.7-1.0 MPa
    EDI Operating Voltage DC 0–300V (depending on module model)
    Power Supply 220V/380V, 50/60Hz (customizable)
    Certification CE compliant

    Key Features

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 14
    All-Membrane Deep Purification
    The two-stage RO + EDI combination eliminates the need for mixed-bed resin and acid-base regeneration, consistently delivering electronic-grade / pharmaceutical-grade ultrapure water.
    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 15
    Integrated Skid-Mounted Design
    Pretreatment, two-stage RO, and EDI are all integrated on a single 304 stainless steel frame. All piping and commissioning are completed at the factory; simply connect water and power on site.
    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 16
    Optimized for Non-Continuous Use
    Supports timed / on-demand operation. The EDI module requires no chemical regeneration cycle — stable permeate quality is achieved immediately upon startup, with no waiting for resin regeneration. Automatic membrane flushing before shutdown prevents contaminant deposition.
    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 17
    Automated Operation
    Equipped with a push-button control panel (start/stop buttons, running indicator lights, emergency stop) and automatic multi-port valves for pretreatment backwash and softener regeneration. Online instruments continuously monitor flow, pressure, conductivity, and permeate resistivity, with high/low pressure protection and dry-run protection.
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    Eco-Friendly & Low Consumption
    EDI consumes only electrical energy — no acid-base chemicals, no regeneration wastewater. Operating costs and environmental compliance burden are significantly lower than conventional ion-exchange processes.
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    Industrial-Grade Manufacturing
    Frame, piping, and membrane housings are made of 304 stainless steel; pretreatment tanks use FRP (fiberglass reinforced plastic) for corrosion resistance and long service life.
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    Low Maintenance
    Automatic multi-port valves handle pretreatment backwash and softener regeneration; routine maintenance is limited to periodic cartridge replacement.
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    OEM/ODM Support
    Flow rate, membrane brand, EDI module, control method, and branding are fully customizable to meet specific market and industry standards.

    Benefits for Your Business

    • Ultrapure Water Output: EDI permeate resistivity is stable at ≥15 MΩ·cm, meeting the stringent water quality requirements of electronics cleaning, pharmaceutical water, laboratory analysis, and high-end manufacturing.

    • Extended Equipment Life: Pretreatment + two-stage RO effectively protect the EDI module from scaling, oxidation, and particulate fouling, reducing core component replacement costs.

    • Instant Startup, Stable Quality: EDI requires no regeneration waiting time — rated water quality is reached quickly after timed startup. Automatic flushing during shutdown prevents membrane fouling during idle periods.

    • Space & Labor Savings: The integrated skid design dramatically reduces footprint; automatic multi-port valves and online monitoring minimize manual operation and labor costs.

    • Environmental Compliance: No acid-base regeneration wastewater, meeting increasingly strict environmental discharge regulations — especially suitable for export and high-end manufacturing customers.

    • Wide Applications: Suitable for electronics & semiconductors, photovoltaic new energy, pharmaceuticals & biotechnology, laboratories & testing centers, fine chemicals, automotive, and surface treatment industries.

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    📦 What’s Included

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 23 Pre-assembled skid-mounted system (304 stainless steel frame with caster kit)

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 24 3 FRP filter tanks (for quartz sand filtration, activated carbon adsorption, and ion exchange softening)

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 25 1 × 5 μm precision cartridge security filter (304 stainless steel housing)

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 26 1st-stage RO system: high-pressure pump + 304 stainless steel membrane housing + high-efficiency RO membrane elements

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 27 2nd-stage RO system: high-pressure pump + 304 stainless steel membrane housing + high-efficiency RO membrane elements

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 28 EDI continuous electrodeionization module (with power controller)

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 29 Automatic multi-port valves (for pretreatment backwash / regeneration control)

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 30 Push-button control panel (start/stop buttons, running indicator lights, emergency stop)

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 31 Online pressure gauges, rotameters, conductivity meter, and resistivity meter

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 32 Piping, valves, and connection fittings (304 stainless steel / UPVC)

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 33User manual and installation guide

    💼 OEM/ODM Services

    As a professional water treatment equipment manufacturer, we offer comprehensive OEM/ODM customization solutions:

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 34 Customizable permeate flow rate (0.25–100 m³/h) and system configuration

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 35 Optional RO membrane brands, EDI modules, and instrument brands

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 36 PLC touchscreen control system available as an upgrade

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 37 Customizable branding, logo, body color, and control panel language

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 38 Design optimization for specific feedwater quality and industry standards (e.g., GMP, ASTM D5127)

    500 L/h Two-Stage RO EDI Deionized Ultrapure Water Systems 39 Market-adapted voltage, plug type, packaging, and multilingual technical documentation




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