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The resin that has been contaminated with iron is soaked with 5%-10% hydrochloric acid.
(1) After the resin fails, the exchanger drains. After the mixed bed resin fails, the resin is normally regenerated to separate from the anion and cation resins, and transferred to the anion and cation regenerators, respectively.
(2) 5%-10% hydrochloric acid is added to each exchanger or regenerator, and the hydrochloric acid liquid surface is about 20-30 cm above the surface of the resin.
(3) After soaking for 5-10 minutes, scrub the air from the bottom of each exchanger or regenerator, then continue to soak. After 30 minutes, scrub and soak. The above process is repeated a plurality of times until the acidity and iron content of the soaking solution are substantially unchanged.
(4) The normal resin is regenerated with a certain concentration of H2SO4, and the acid is fed until the acid concentration of the cation exchanger or the regenerator is equal; the back layer is backwashed, and the weak base anion resin and alkali are firstly The anion resin is separated, replaced with refined water for 30 minutes, and then normal regeneration is carried out with a certain concentration of NaOH lye. The alkali is added until the alkali concentration of the double-layer bed is equal; the mixed resin is first rinsed with purified water for about 30 minutes, then used A certain concentration of NaOH lye is normally regenerated, and the alkali is fed until the alkali concentration of the anion regenerator is equal.
(5) Continue the regeneration according to the regeneration program.
September 25, 2024
September 25, 2024
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September 25, 2024
September 25, 2024
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.