Control method of the EDI ultra-pure water equipment system:

The control methods for the EDI ultra-pure water equipment system include manual and automatic, and can meet the following requirements:

Automatic refilling of the water tank: The water tank is automatically refilled when the water level reaches the low position. Refilling stops when it reaches the high position.

2. The system activates when the water tank reaches a certain level, and stops when the pure water tank is full.

3. When the water tank is at low water level, the water shortage protection is activated, the cold water machine stops completely, and neither manual nor automatic operations can be carried out.

4. The reverse osmosis system undergoes a startup cleaning each time it powers on, with the cleaning duration controlled to approximately 30 seconds (adjustable), and a timed cleaning is performed after the system has been running for a period (adjustable duration).

5. When the pretreatment pressure does not reach 2 kg, the reverse osmosis main unit is protected against low pressure.

6. The water softener undergoes an automatic regeneration process after operating for 72 hours.

6. When the pure water tank is low on water, the EDI system cannot operate.

7. When the ultra-pure water tank is full, the EDI membrane stack stops operating.

8. The EDI membrane stack is controlled by the EDI concentrated water flow switch. If the flow does not meet the requirements, the EDI membrane stack will automatically shut down.

How EDI Works

EDI membranes and reverse osmosis membranes are quite different. Reverse osmosis membranes allow small particle molecules, pollutants, and ions, as well as water, to pass through, while EDI membranes, like ion exchange resins, are made of polyphenylene ether materials and only permit ions with appropriate charges to pass through, with water largely unable to pass. The resins are continuously regenerated through separation in water. In an electric field, water molecules in the feedwater are separated into H+ and OH- ions, which are attracted to opposite charges. High-pressure chillers, H+ ions move towards the cathode through the anion resin, while OH- ions move towards the anode through the cation resin. This migration of H+ and OH- regenerates the resins, while maintaining the chiller's functionality. The anion membrane allows H+ to pass into the concentrate chamber, and the cation membrane allows OH- to pass into the concentrate chamber as well, where H+ and OH- combine to form the product water. The flow of water within the concentrate chamber carries away the ionic species. The membrane prevents ions with opposite charges from entering the freshwater chamber. As the water flows through the freshwater chamber, ions are removed by the resins, resulting in the production of pure water in the effective side (freshwater chamber).

Ultra-Pure Water Machine Technical Explanation

A water treatment equipment that employs pretreatment, reverse osmosis technology, ultra-pure purification, and post-processing methods to almost completely remove conductive media from water, as well as to reduce colloidal substances, gases, and organic matter to a very low degree. This equipment is also known as ultra-pure water generators, ultra-pure water systems, precision chillers, ultra-pure water meters, ultra-pure water units, and laboratory ultra-pure water generators, among others. The resistivity of the ultra-pure water produced by ultra-pure water machines should generally be greater than 10 megohms, water with a resistivity of 10 megohms or more is considered ultra-pure. The output of high-quality ultra-pure water can reach 18.25 megohms.

As an indispensable source of water for daily experiments, ultra-pure water systems are highly utilized laboratory equipment. Having a thorough understanding of their common malfunctions and solutions will greatly enhance our experimental efficiency.

High-pressure Water Chiller - Water Chiller - Taicang Zhongao Ultrasonic is provided by Taicang Zhongao Ultrasonic Equipment Factory. "Mainly engaged in ultrasonic equipment, ultrasonic cleaning machines, drying equipment, and water chiller equipment." Choose Taicang Zhongao Ultrasonic Equipment Factory, located at No. 5 Xiangyang Road, Yangchenghu Town, Xiangcheng District, Suzhou City. For many years, Zhongao Ultrasonic has been committed to providing excellent service to our clients. Contact: Yan Jiabin. Welcome to call, write, or visit for business discussions. Zhongao Ultrasonic looks forward to becoming your long-term partner!