【Daily Question】Chemical Engineering Principles 534: Carbon Remover (March 21)
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The Chemical Engineering Theory section is launching the \"One Question per Day\" campaign starting today, aimed at helping everyone reinforce their basic knowledge in chemical engineering. Subsequent series will include those on \"Principles of Chemical Engineering,\" \"Mass Transfer and Separation,\" \"Thermodynamics in Chemical Engineering,\" and \"Chemical Process Engineering.\" We hope you will give it your active support~~~ Answers to the \"One Question per Day\" questions can be viewed directly here; the topic will be closed after 1 day! ! To encourage everyone’s continued participation this year! Participation earns 3 wealth points, with an additional 4 wealth points for correct answers~~~ Short answer question: How does the effectiveness of the carbon remover in removing carbon affect the quality of the desalinated water? Answer: Raw water generally contains large amounts of carbonates. After passing through a cation exchanger, the pH value of the water is usually below 4.5, and the carbonates are completely decomposed into CO2. This CO2 can be almost entirely removed by a carbon removal unit, thereby reducing the total amount of anions that reach the anion exchanger. This lessens the load on the anion exchanger, allows the exchange capacity of the anion exchange resin to be utilized more fully, extends the operating life of the anion exchanger, and reduces alkali consumption ； At the same time, since CO2 is removed, the anion exchange resin can remove silicic acid more thoroughly. This is because when CO2 and HSiO3- are present in water simultaneously, during the ion exchange process, CO2 reacts with H2O to form HCO3-. HCO3- is more easily adsorbed by the anion exchanger than HSiO3-, which hinders the exchange of silicon and results in poor carbon removal. The more CO2 remains in the water, the more HCO3- is produced; this not only affects the efficiency of the anion exchanger in removing silicon but also increases the silicon and salt content in the deionized water.
Raw water generally contains large amounts of carbonates; after passing through a cation exchanger, the pH of the water is usually below 4.5. Carbonates can be completely decomposed into CO2, and CO2 can be almost entirely removed using a decarburization unit. This reduces the total amount of anions that reach the anion exchanger, thereby reducing the load on it. As a result, the exchange capacity of the anion exchanger can be fully utilized, extending its operational life and reducing alkali consumption. At the same time, since CO2 is removed completely, the anion exchanger can remove silicic acid more thoroughly. Because when CO2 and HSiO3 are present in water simultaneously, during the ion exchange process, CO2 reacts with H2O to form HCO3-, which is easily absorbed by anion exchange resins. This hinders the exchange of silicon, resulting in poor carbon removal efficiency. The more CO2 remaining in the water, the more HCO3- is produced, which not only affects the efficiency of silicon removal by the anion exchanger but also increases the silicon and salt content in the deionized water.
Raw water generally contains large amounts of carbonates; after passing through a cation exchanger, the pH of the water is usually below 4.5. The carbonates can be completely decomposed into CO2, and this CO2 can be almost entirely removed by a decarburization unit. This reduces the total amount of anions that reach the anion exchanger, thereby reducing the load on it. As a result, the exchange capacity of the anion exchanger can be fully utilized, extending its operational life and reducing alkali consumption. At the same time, since CO2 is removed, the anion exchanger can remove silicic acid more thoroughly. Because when CO2 and HSiO3- are present in water simultaneously, during the ion exchange process, CO2 reacts with H2O to form HCO3-. HCO3- is more easily adsorbed by the anion exchanger than HSiO3-, which hinders the exchange of silicon and results in poor carbon removal. The more CO2 remains in the water, the more HCO3- is produced; this not only affects the efficiency of the anion exchanger in removing silicon but also increases the silicon and salt content in the deionized water.
Raw water generally contains large amounts of carbonates; after passing through a cation exchanger, the pH of the water is usually below 4.5, and all the carbonates are decomposed into CO2. CO2 can be almost completely removed through a decarburizer, which reduces the total amount of anions entering the anion exchanger. This lessens the load on the anion exchanger, allows the exchange capacity of the anion exchange resin to be utilized fully, extends the operating life of the anion exchanger, and reduces alkali consumption. At the same time, since CO2 is removed, the anion exchange resin can remove silicic acid more thoroughly. Because when CO2 and HSiO₃ are present in water together, during the ion exchange process, CO2 reacts with H2O to form HCO₃⁻. HCO₃⁻ is more easily adsorbed by anion exchange resins than HSiO₃⁻, which hinders the exchange of silicon ； The carbon removal efficiency is poor; the more CO2 remains in the water, the more HCO₃⁻ is produced. This not only affects the silicon removal performance of anion exchangers but also increases the silicon and salt content in the deionized water.
Raw water generally contains large amounts of carbonates; after passing through a cation exchanger, the pH of the water is usually below 4.5, and all the carbonates are decomposed into CO2. CO2 can be almost completely removed through a decarburizer, which reduces the total amount of anions entering the anion exchanger. This lessens the load on the anion exchanger, allows the exchange capacity of the anion exchange resin to be utilized fully, extends the operating life of the anion exchanger, and reduces alkali consumption. At the same time, since CO2 is removed, the anion exchange resin can remove silicic acid more thoroughly. Because when CO2 and HSiO3 are present in water simultaneously, during the ion exchange process, CO2 reacts with H2O to form HCO3-. HCO3- is more easily adsorbed by anion exchange resins than HSiO3, which hinders the exchange of silicon ； The carbon removal efficiency is poor; the more CO2 remains in the water, the more HCO3 is produced. This not only affects the silicon removal performance of anion exchangers but also increases the silicon and salt content in the deionized water.
Raw water generally contains large amounts of carbonates; after passing through a cation exchanger, the pH value of the water is usually less than 4.5, and the carbonates are completely decomposed into CO2, which in turn…
Raw water generally contains large amounts of carbonates; after passing through a cation exchanger, the pH of the water is usually below 4.5. The carbonates are completely decomposed into CO2, and this CO2 can be largely removed by a carbon removal unit. As a result, the total amount of anions entering the anion exchanger is reduced, thereby lightening the load on the anion exchanger. This allows the exchange capacity of the anion exchange resin to be utilized more fully, extending the operational life of the anion exchanger and reducing alkali consumption； At the same time, since CO2 is removed, the anion exchange resin can remove silicic acid more thoroughly. Because when CO2 is present in water, it reacts with H2O during the ion exchange process to form a substance that is more easily adsorbed by the anion exchangers. This hinders the exchange of silicon, resulting in poor carbon removal efficiency. The more CO2 remains in the water, the more of this substance is formed, which not only affects the efficiency of silicon removal by the anion exchangers but also increases the silicon and salt content in the deionized water.
Raw water generally contains large amounts of carbonates; after passing through a cation exchanger, the pH of the water is usually below 4.5, and all the carbonates are decomposed into CO2. CO2 can be almost completely removed through a decarburizer, which reduces the total amount of anions entering the anion exchanger. This lessens the load on the anion exchanger, allows the exchange capacity of the anion exchange resin to be utilized fully, extends the operating life of the anion exchanger, and reduces alkali consumption. At the same time, since CO2 is removed, the anion exchange resin can remove silicic acid more thoroughly. Because when CO2 and HSiO3 are present in water together, during the ion exchange process, CO2 reacts with H2O to form HCO3. HCO3 is more easily adsorbed by anion exchange resins than HSiO3, which hinders the exchange of silicon ； The carbon removal efficiency is poor; the more CO2 remains in the water, the more HCO3 is produced. This not only affects the silicon removal performance of anion exchangers but also increases the silicon and salt content in the deionized water.
Raw water generally contains large amounts of carbonates; after passing through a cation exchanger, the pH of the water is usually below 4.5, and all the carbonates are decomposed into CO2. CO2 can be almost completely removed through a decarburizer, which reduces the total amount of anions entering the anion exchanger. This lessens the load on the anion exchanger, allows the exchange capacity of the anion exchange resin to be utilized fully, extends the operating life of the anion exchanger, and reduces alkali consumption. At the same time, since CO2 is removed, the anion exchange resin can remove silicic acid more thoroughly. Because when CO2 and HSiO3 are present in water simultaneously, during the ion exchange process, CO2 reacts with H2O to form HCO3. HCO3 is more easily adsorbed by anion exchange resins than HSiO3, which hinders the exchange of silicon ； The carbon removal efficiency is poor; the more CO2 remains in the water, the more HCO3 is produced. This not only affects the silicon removal performance of anion exchangers but also increases the silicon and salt content in the deionized water.
Raw water generally contains large amounts of carbonates; after passing through a cation exchanger, the pH of the water is usually below 4.5, and all the carbonates are decomposed into CO2. CO2 can be almost completely removed through a decarburizer, which reduces the total amount of anions entering the anion exchanger. This lessens the load on the anion exchanger, allows the exchange capacity of the anion exchange resin to be utilized fully, extends the operating life of the anion exchanger, and reduces alkali consumption. At the same time, since CO2 is removed, the anion exchange resin can remove silicic acid more thoroughly. Because when CO2 and HSiO₃ are present in water together, during the ion exchange process, CO2 reacts with H2O to form HCO₃⁻. HCO₃⁻ is more easily adsorbed by anion exchange resins than HSiO₃⁻, which hinders the exchange of silicon ； The carbon removal efficiency is poor; the more CO2 remains in the water, the more HCO₃⁻ is produced. This not only affects the silicon removal performance of anion exchangers but also increases the silicon and salt content in the deionized water.
Raw water generally contains large amounts of carbonates; after passing through a cation exchanger, the pH value of the water is usually below 4.5. The carbonates are completely decomposed into CO2, and this CO2 can be almost entirely removed by a decarburization unit. This reduces the total amount of anions that reach the anion exchanger, thereby lightening the load on it and allowing the exchange capacity of the anion exchange resin to be utilized more fully. As a result, the operating life of the anion exchanger is extended, and alkali consumption is reduced； At the same time, since CO2 is removed, the anion exchange resin can remove silicic acid more thoroughly. Because when CO2 and HSiO3 are present in water, during the ion exchange process, CO2 reacts with H2O to form HCO3-. HCO3- is more easily adsorbed by the anion exchanger than HSiO3-, which hinders the exchange of silicon and results in poor carbon removal. The more CO2 remains in the water, the more HCO3- is produced; this not only affects the efficiency of the anion exchanger in removing silicon but also increases the silicon and salt content in the deionized water.