EDI Purified Water System

EDI purified water system is the core purification unit for ultrapure water production, used to produce high-purity ultrapure water, replacing the traditional mixed-bed ion exchange process.

 

The EDI purified water system does not consume acid or alkali reagents during water production, and there is no acid or alkali waste discharge, reducing hazardous waste treatment costs. The EDI purified water system produced by Foren factory can stably produce ultrapure water with a resistivity of 15-18.2 MΩ·cm, without the water quality fluctuations before and after mixed-bed regeneration. During operation, the equipment consumes only electricity and a small amount of concentrate return; the resin undergoes electrochemical self-regeneration within the module, eliminating the need for downtime regeneration. Under normal water quality conditions, the EDI module's lifespan can reach 3-5 years or more. The equipment can operate fully automatically and can be equipped with a PLC control system, requiring minimal manual operation; daily monitoring only involves conductivity, resistivity, pressure, and flow rate.

 

Foren factory specializes in manufacturing skid-mounted water treatment equipment. Our EDI purified water system also adopts a modular standard component design, with an overall skid-mounted structure. Multiple EDI modules can be connected in parallel for expansion, resulting in a compact overall layout and convenient transportation. The piping throughout the unit is primarily constructed from UPVC/304/316L stainless steel, ensuring corrosion resistance. It features pressure protection and can be connected to upstream RO reverse osmosis equipment for integrated pure water system operation.

EDI purified water systems must be connected after a double-stage reverse osmosis water treatment system; they cannot be used independently. Directly connecting untreated raw water to the system can easily clog the membrane, rendering it unusable.

1. Pharmaceutical and Biotechnology Industry

- Pre-treatment of purified water and water for injection: water for the production of oral liquids, injections, and active pharmaceutical ingredients;

- Water for biological laboratories, biological reagents, and culture medium preparation;

- Water for cleaning medical devices.

2. Electronics & Semiconductors / New Energy Industry (Largest Application Area)

- Photovoltaic Industry: Silicon wafer cleaning, ultrapure water for cell production;

- Semiconductor, Chip, PCB: Wafer etching, component cleaning;

- Lithium battery, energy storage battery production feedwater, electrode cleaning water;

- Display panel (LCD/OLED) production process water.

3. Power & Heat Industry - Boiler Feedwater

- Thermal power plant, waste heat boiler, industrial high-pressure boiler feedwater;

- Gas turbine, generator set circulating feedwater.

4. Cosmetics & Food & Beverage

- Skin care products, cosmetics, personal care product feedwater;

- Bottled beverage, brewing, health product feedwater;

- High-purity water for CIP cleaning of food equipment.

5. Laboratories & Research Institutions

- Ultrapure water for universities, testing institutions, and physicochemical analysis laboratories;

- Water supply for scientific instruments and analytical equipment.

6. Other Industrial Manufacturing Scenarios

(1) Electroplating and Surface Treatment: Water for rinsing precision electroplating and anodizing to reduce plating defects;

(2) Optical Industry: Water for cleaning lenses and optical glass;

(3) Chemical Industry: Water for fine chemical production, reagent production, and reactor process preparation;

(4) Deep Purification at the Back End of Seawater/Brackish Water Desalination: RO permeate is further purified by EDI to improve water quality.

Foren's factory is located in Weifang City, Shandong Province, China. We have over ten years of experience in designing and manufacturing water treatment equipment. If you are unsure how to choose the right water treatment equipment, tell me your water needs and water quality report, and we can provide you with the most suitable water treatment solution.