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Anion and cation exchanger introduction

hit count: Updated: 19/11/07 10:20:11 Source: zhyuancn.com [ close ] share:
    The common place for anion and cation exchangers is the application of hard water softening, deionized water preparation and food purification in industrial production. It has many functions and better performance than ordinary equipment. Let me introduce this equipment to everyone. :
    I. Overview
    As the name implies, we can conclude that it is composed of two, both of which coexist and exchange. This device is an instrument for removing positively and negatively charged ions in water.
    Classification
    1. Fill the anion resin and cation resin exchangers separately. The cation exchanger is used to remove positively charged ions (cations), and the anion resin is used to remove negatively charged ions (anions).
    2. Cation exchange resin is the replacement of H + ions with cations such as calcium, magnesium and sodium ions. Anion exchange resin is the replacement of OH- ions with anions, such as chloride, sulfate and bicarbonate ions, and the replaced H + and OH- are synthesized to form water, removing ions in the water.
    3. The resin's exchange capacity is limited, and it can be regenerated after its exchange capacity is exhausted. When the exchange capacity is exhausted, when the equilibrium state between the adsorbed ions is reached, the regeneration of the cationic resin is treated with acid, and it is generally regenerated with hydrochloric acid, that is, filled with H + ions.
    4. The regeneration of anionic resin generally uses sodium hydroxide, that is, filled with OH- ions. Regeneration can be performed outside the column with a regenerated exchange column deionization device, or it can be performed in the column by installing a renewable deionization device and regeneration device and chemical agents.
    In life, we can see anion and cation exchangers everywhere. Since both yin and yang coexist in the same equipment and work together, the effect is much stronger than other classifications. It can even be used in the recovery of precious metals, chemical raw materials, and electroplating wastewater. Processing and other aspects.
    Editor: mxy

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