EDI System
Reverse Osmosis + EDI Combining technologies:
| HY-EDI+RO-3T/hr | |||
| Flow rate | 3T/hr | Recovery rate | 60% |
| Applicable power | 220V/50hz 3 phase | Rated power | 6.05KW |
| Feedwater TDS | 800ppm | freshwater TDS | 0-1ppm |
| Working pressure | 10.7 bar | operating temperature | 5-45ºC |
| Feedwater residual chlorine | <0.1ppm | Feedwater SDI | <5 |
| RO membrane housing | 8040*3 core,1pieces | RO membrane | 3pieces |
| Installation dimensions: | L9×W1.5×H2.1(m) | Feedwater turbidity | <1NTU |
- Step1：Pretreatment (Multi-Media Filtration,Activated Carbon Adsorption, Softening) --- Removes large particles, residual chlorine, organic matter, and hardness ions
- Step2：Primary RO System --- Removes most dissolved solids through reverse osmosis membrane, reducing TDS
- Step3: Intermediate Tank --- Stores RO product water to provide a stable water source for the EDI system
- Step4: EDI System --- Further removes ions using electric field and ion exchange resin to achieve ultra-pure water standards
Key Features:
-
Advanced Ion-Exchange Technology:
The plant uses high-efficiency ion-exchange resins to remove cations and anions from the water, ensuring maximum purity. -
High Purity:
Produces water with a very low Total Dissolved Solids (TDS) level, making it ideal for applications that require high-purity water, such as electronics manufacturing, laboratories, and power plants. -
Customizable Capacity:
We offer plants that can be tailored to suit your needs, from small-scale systems to large industrial capacities, ensuring you get the right solution for your water requirements. -
Compact and Efficient Design:
The plant is designed for space-saving, easy installation, and low maintenance. It ensures minimal energy consumption while maximizing output. -
Advanced Monitoring and Control Systems:
Equipped with automatic sensors and control systems, our DI water plants monitor and regulate water quality, ensuring consistent output with minimal human intervention. -
Durable Components:
Made from high-quality materials that withstand corrosion and wear, ensuring long-lasting performance and minimal maintenance. -
Environmentally Friendly:
The plant is designed to be eco-friendly, reducing water waste and ensuring optimal energy efficiency.
Deionized (DI) Water Plant Applications
- ✓Laboratories: Used for sensitive experiments and analysis requiring water with minimal ion content.
- ✓Pharmaceuticals: Essential in drug manufacturing and for sterilization processes.
- ✓Electronics: Used in cleaning and processing delicate electronic components where even trace impurities can affect performance
- ✓Power Plants: Necessary for cooling and steam generation systems that demand pure water to avoid scaling and corrosion
Frequently Asked Questions
What is EDI System?
EDI (Electrodeionization) is a continuous deionization water treatment equipment placed after RO system. It removes dissolved ions to produce high-purity water without chemical regeneration.
What is the typical application of EDI?
Widely used for high purified water requirement: pharmaceutical water, cosmetic production, boiler feed water, laboratory water, high-end drinking water production.
What is the inlet water requirement for EDI module?
EDI inlet water is normally permeate water from single stage RO. - Inlet TDS: ≤ 20 ppm - Water temperature: 15~35℃ - Inlet pressure: 0.2~0.4 MPa - Hardness < 1 ppm (as CaCO₃) - Free chlorine: 0 ppm (no residual chlorine)
What water resistivity can EDI reach?
Under qualified inlet water, EDI produced water resistivity can reach 10~18.2 MΩ·cm @25℃.
What is the standard EDI system composition?
EDI stack, DC power supply, control cabinet, flow meter, pressure gauge, resistivity online monitor, valves & pipeline.
What material for EDI pipeline?
Product water pipeline: UPVC / SUS316L; frame: SUS304 stainless steel.
What brand EDI stacks can you supply?
Can provide well-known brands such as E-Cell, Ionpure, or domestic high-quality EDI stacks per client’s request.
What is the service life of EDI stack?
With proper pre-treatment and stable operating condition, EDI stack service life is 3–5 years.
Does EDI need chemical regeneration like mixed bed resin?
No. EDI works by electric field and ion exchange resin inside stack. No acid & alkali chemical regeneration required during normal operation
What is the power supply for EDI system?
Main control: 380V / 3Ph /50Hz; EDI stack uses dedicated DC power supply. Custom voltage available.
What routine maintenance is required?
1. Monitor inlet pressure, flow and resistivity daily. 2. Ensure RO pre-treatment works well, protect EDI from scaling and oxidation. 3. Clean EDI stack if pressure drop increases or resistivity drops obviously.
Can EDI run automatically?
Yes. PLC+touch screen automatic control, with interlock protection for low flow, high pressure and abnormal resistivity.
What certificates can be offered?
CE, ISO9001, material certificates. We also provide CO, commercial invoice, packing list for customs clearance.
What is the warranty period?
12 months warranty from shipment date (EDI stack, filter cartridges and consumables excluded). Lifetime technical support.
Send Your Requirements
- Required product water capacity — Target EDI permeate flow rate: _______ m³/h
- Required product water quality — Required resistivity @25℃: _______ MΩ·cm
- Inlet water condition (feed water to EDI) — - Inlet TDS: ____ ppm - Inlet water temperature: ____ ℃ - Inlet hardness (as CaCO₃): ____ ppm - Free residual chlorine: ____ ppm - Silica content: ____ ppm
- Inlet pressure & pressure drop requirement — Working inlet pressure range: ____ MPa
- Water recovery rate requirement — Required recovery rate: ____ %
- Power supply at site — ____ V / ____ Phase / ____ Hz
- Control system requirement — □ PLC + Touch Screen automatic control □ Manual control □ Online resistivity monitor required: □ Yes □ No □ Flow / pressure interlock protection: □ Yes □ No
- Commercial & document requirement — - Destination country: ________ - Required certificates: □ CE □ ISO9001 □ Material Certificate - Trade term: □ EXW □ FOB □ CIF □ CFR
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