Introduction: The key to modern chlor-alkali production is not simply “electrifying brine.” It is the controlled combination of ion-selective membranes, electrode reactions and high-purity brine that enables chlorine, hydrogen and caustic soda to be produced reliably within one electroly...
1. Why Can BMED Turn Salt Back into Acid and Alkali?
In many chemical, metallurgical, electronics, advanced-material, and wastewater-treatment projects, the final stream is not simply high-salinity water. It is a concentrate containing potentially usable salts, such as chlorides, sulfates, an...
1. Do Not Start with “How Large Is the System?” Start with “What Must Be Removed from the Water?”
When selecting an electrodialysis system, one of the most common mistakes is to give a supplier only the required throughput and request a quotation. The real basis for a...
Caustic soda (NaOH, sodium hydroxide) is an essential basic chemical for industries including papermaking, alumina, textiles, chemicals, water treatment, and cleaning. In modern industry, large-scale caustic soda is not produced by simple chemical neutralization; instead, it relies on the chlor-alka...
The chlor-alkali process is one of the most important electrochemical production routes in basic chemicals. Its core task is to use refined brine as feedstock and simultaneously obtain chlorine, hydrogen and caustic soda (sodium hydroxide) through electrolysis. It is called “chlor-alkali&rdquo...
In industrial desalination and high-salinity wastewater treatment, many projects are not really about “whether desalination is possible,” but about whether the equipment can operate stably over the long term. Traditional electrodialysis uses a direct current electric field to drive catio...
Within the industrial water treatment technology system, electrodialysis (ED) has long been a membrane separation process with high technical barriers. Unlike reverse osmosis technology driven by pressure, electrodialysis uses a direct current electric field as the driving force, causing anions and...
The global chlor-alkali industry is the silent engine of the modern chemical sector. From tap water purification to textile bleaching, from PVC production to pharmaceutical synthesis, caustic soda (NaOH), chlorine (Cl₂) and hydrogen (H₂) form the three cornerstones of industrial intermediates. The c...
The essence of a chlor-alkali electrolyzer is a precisely controlled electrochemical reactor. Direct current flows in through the anode and out through the cathode. Within an extremely narrow gap, brine is decomposed into chlorine gas, hydrogen gas, and caustic soda. Driving all of this are three pr...
Against the backdrop of increasingly strained global water resources and ever-tightening environmental regulations, Zero Liquid Discharge (ZLD) has become the ultimate goal of industrial wastewater treatment. It means that all water discharged from the system must be recovered and reused, with no li...
In chlor-alkali chemical production, Ca2+ and Mg2+ are the two most common and most harmful cationic impurities. Excessive calcium and magnesium ions enter the electrolyzer along with the refined brine and migrate toward the cathode under the electric field. They penetrate the carboxylic acid layer...
Manufacturing pharmaceuticals is essentially a series of chemical reactions. Take a typical antibiotic synthesis as an example: two raw materials react in a solvent to form the target molecule. However, when the reaction is complete, the vessel contains not only the target product but also a large a...