Electrodeionization System
EDI Electrodeionization System Supplier
The EDI ultrapure water treatment equipment, also known as an electrodeionization system, is a new-generation ultrapure water production technology that integrates electrodialysis membrane separation with ion exchange technology.
The EDI unit belongs to the polishing stage of water treatment systems and is commonly used in combination with reverse osmosis (RO) to form a complete ultrapure water system consisting of pretreatment, RO, and EDI, replacing traditional mixed-bed ion exchange systems. The required feed water resistivity for EDI ranges from 0.025 to 0.5 MΩ·cm, which can be achieved by RO systems. The electrodeionization system is capable of producing ultrapure water with resistivity exceeding 15 MΩ·cm. For high-purity water applications, considering water quality, performance, operation, operating costs, and environmental impact, the RO + EDI process is an ideal solution.
Clear Environment Provides You Diverse Electrodeionization System
Lab Electrodeionization EDI System
Small capacity: 50L, 100L, 150L, 200L, 250L, treating process 2 stage RO + EDI, for hospital, university and lab, producing ultrapure water with resistivity exceeding 15 MΩ·cm
EDI Plant for Cosmetic Production
EDI technology is a modern water treatment technology. In cosmetic manufacturing, high-purity water is a critical raw material, as it ensures the stability and quality of cosmetic.
Pharmacopoeial EDI Plant Water Treatment
The water quality requirements for pharmaceutical are extremely strict. EDI water treatment systems can be integrated with industrial CIP systems to provide high-purity water for cleaning and process applications.
RO EDI water treatment system for Automotive Urea Production
The EDI system can produce ultrapure water with a resistivity of up to 18 MΩ·cm, fully meeting the high water quality standards required for automotive urea solution production.
EDI System Water Treatment for Power Plants
Boiler feed water requires extremely high purity, as even trace impurities can cause scaling, corrosion, or even safety incidents under high-temperature and high-pressure conditions. EDI systems can stably produce ultrapure water.
EDI for Water Treatment in Semiconductor Applications
During the manufacturing of precision electronic components such as integrated circuits and photovoltaic materials, large quantities of ultrapure water are required for cleaning and solution preparation.
More tips of the EDI system design, please visit here.
Electrodeionization System Process
FAQ
What is edi in water treatment?
The EDI system (Electrodeionization, continuous deionization technology) is a water treatment system that combines electrodialysis and ion exchange technologies. It uses a direct current electric field to drive the directional migration of ions and enable continuous electro-regeneration of ion exchange resins, allowing the continuous production of ultrapure water without the use of acid or alkali chemicals. The system consists of ion exchange membranes, mixed resins, electrodes, and a power supply.
What are advantages of RO EDI water treatment?
EDI technology not only delivers superior desalination performance, but also offers significant advantages such as continuous operation, elimination of chemical regenerants, and reduced secondary pollution.
What are best pumps for electrodeionization?
The calculation of pump head must take into account the inlet pipeline pressure losses (mainly related to the distance, elevation difference, pipe diameter, and pipe material between the feed water pump and the EDI unit; actual values should be based on site conditions), the pressure drop across the security filter (generally about 0.05 MPa, subject to actual site conditions), the pressure differential of the EDI module (taking the Electropure EDI EXL series as an example, typically not exceeding 0.35 MPa), and the required product water back pressure (including the elevation difference of the product water tank and pressure losses in the EDI product water piping, generally about 0.15 MPa, subject to actual site conditions), so as to avoid insufficient water pressure affecting the EDI product water flow.
What is future of RO EDI water treatment?
With the rapid development of the electronics, semiconductor, and optoelectronics industries, the demand for high-purity water continues to grow. At the same time, industries such as biopharmaceuticals, food and beverage, and chemicals also require high-purity water in their production processes. Therefore, the market demand for ultrapure water EDI systems is very strong across these industries.
What is EDI plants electrodeionization troubleshooting?
- Booster pump issues
- High ultrapure water conductivity during initial startup
- Reduced product water output from the system
- Difficulty starting the equipment
How does ro edi water treatment work?
The system adopts a composite process of “pre-treatment + secondary RO + EDI + mixed bed”.The system operates under fully automatic control, with an overall system recovery rate of 65%–75% and a secondary RO stage recovery rate of 80%–85%, balancing efficiency and water-saving requirements.Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
What is electrodeionization wastewater?
During operation, EDI ultrapure water systems generate a small amount of wastewater, primarily from the concentrate chamber of the modules. During the ion migration process, some water containing a high concentration of ions enters the concentrate chamber, forming concentrate (i.e., wastewater). This portion of water must be discharged from the system to prevent ion accumulation within the module, which could affect product water quality.
What is edi plants EDI feed water quality?
EDI has strict feed water requirements (e.g., RO product water conductivity ≤ 20 μS/cm, hardness ≤ 1 ppm, TOC ≤ 0.5 ppm, etc.).
Related Articles
- Advantages and Disadvantages of Electrodeionization vs Ion Exchange
- Why Does an EDI Water Treatment System Require Ventilation During Operation?
- Electrodeionization EDI System Design Guide: 20 Practical Tips to Avoid Common Design Mistakes
- How Tap Water Becomes 18.2 MΩ·cm Ultrapure Water
- Electrodeionization Troubleshooting: Common EDI Plant Problems and Solutions
