1results about How to "Suitable for drinking" patented technology

The application discloses a preparation method of high-purity chlorine-free stomach-protecting sodium ion water, and belongs to the technical field of drinking water processing. The preparation method is characterized by using food-grade sodium carbonate, oxalic acid and calcium carbonate as raw materials, accurately feeding based on the atomic weight stoichiometric ratio, and realizing deep removal of impurities through step-by-step precipitation reaction. First, sodium carbonate and oxalic acid are reacted to generate a mixed mother liquor containing sodium ions and oxalate ions; then, calcium carbonate is added to convert the oxalate ions into calcium oxalate precipitates, and the calcium oxalate precipitates are removed through filtration; finally, high-purity sodium ion water which is chlorine-free, impurity-free and mild to the stomach is obtained. The preparation method has the advantages of normal temperature and pressure, safe and easily-obtained raw materials, low production cost, simple and easy-to-operate process, and the like, the by-products can be recycled, no waste is generated, and the preparation method is suitable for large-scale production of drinking-grade high-purity chlorine-free sodium ion water.