Name: Membrane Electrodialyser
Principle of electrodialysis
The basic principle of electrodialysis desalination is to use the selective permeability of ion exchange membranes. The cation exchange membrane only allows cations to pass through, and blocks the passage of anions, and the anion exchange membrane only allows anions to pass through. Under the action of an external DC electric field, the ions in the water migrate in a direction, so that most of the ions in one channel of water migrate to the other channel of ionized water. To achieve the purpose of desalination of salt water.
Synonyms: Membrane Electrodialyser, Membrane Electrodialyzer, Ion Exchange Membrane Electrodialyser, Membrane Electrodialysis Stack,Ion Exchange Membrane Electrodialysis Stack, Electroosmosis
Application:Brackish water desalination, concentration and desalination
Month Capacity:300 pieces
Electrodialyzer for concentration and desalination
Electrodialyzer for Separation of Inorganic Salts and Organic Matter
Inverted Electrodialysis EDR
The EDR process refers to switching the polarity of the positive and negative electrodes at regular intervals (usually 15-20min) (frequently reversed), which can automatically clean the ion-exchange membrane and the dirt on the surface of the electrodes to ensure the quality and quantity of fresh water, and the ion-exchange membrane. Stable operation and minimum concentrated water discharge, EDR system is composed of three parts: electrodialysis body, rectifier and automatic reverse pole system. The pole reverse operation procedure is as follows:
1. Change the polarity of the DC power supply electrode, so that the thick and thin chambers are interchanged, and the ion flow is reversed;
2. Change the water inlet and outlet valves, so that the water supply and drainage systems of the thick and thin chambers can be interchanged;
3. Continue 1-2 minutes after the polarity change, put the unqualified fresh water into the concentrated water system, and then the concentrated and fresh water will go their separate ways and resume normal operation
Applications Areas:
1, concentration and desalination
2,Electrodialysis Separation of Inorganic Salts and Organic Matter.
Applications Cases:
1,Treatment and recycling of saline wastewater
2,Direct production of hydrochloric acid and sodium hydroxide from table salt (sodium chloride) Direct production of vitamin C from sodium salt of vitamin C
3,Direct production of tartaric acid from sodium tartrate
4,Direct production of lactic acid from sodium lactate
5,Direct production of gluconic acid from sodium gluconate
6,Direct production of methanesulfonic acid from sodium methanesulfonate
7,Direct separation of amino acids from fermentation broth
8,Recovery of acetic acid from sodium acetate waste water
9. Electrodialysis is used for desalination and desalination of water, concentration of seawater for salt production, refined dairy products, deacidification and purification of fruit juice, preparation of chemical products, etc.
10. Electrodialysis can be used for the pretreatment of high-purity water produced in food, light industry and other industries to produce pure water, electronics, medicine and other industries.
11. Electrodialysis can be used for primary softening and desalination of boiler feed water, and desalination of brackish water into drinking water.
12. The electrodialyzer is suitable for water supply treatment in electronics, medicine, chemical industry, thermal power generation, food, beer, beverage, printing and dyeing and coating industries. It can also be used in physical and chemical processes such as concentration, purification and separation of materials.
13. Electrodialysis can also be used for the treatment of waste water and waste liquid and the recovery of precious metals, such as the recovery of nickel from electroplating waste liquid.
