【Daily Question】Chemical Engineering Principles 418: Resins in Desalination Systems (August 31)
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This post was last edited by “Back to Cambridge” on September 9, 2016, at 17:07. Starting today, the Chemical Engineering Theory section will launch the “Question of the Day” activity, aimed at helping everyone reinforce their basic knowledge of chemical engineering. Subsequently, series such as “Fundamentals of Chemical Engineering”, “Mass Transfer and Separation”, “Chemical Thermodynamics”, and “Chemical Process Engineering” will also be introduced. We hope for your active participation! Wishing you all a Merry Christmas~~ For replies to the “Question of the Day” activity, answers can be viewed directly; however, the thread will be closed after one 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: What are the typical symptoms when the resins in a desalination system become contaminated by organic substances? Answer: Depending on the properties of the resin, strong-base anion resins are prone to contamination by organic substances. After contamination, their exchange capacity decreases, the time required for rinsing after regeneration increases, the color of the resin often darkens, the quality of the water output from the desalination system deteriorates, and the pH value drops. Sampling can also be done for further assessment: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, 10% saltwater is used instead, and the mixture is shaken for 5–10 minutes. The color of the saltwater is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.
After contamination, the exchange capacity decreases, the time required for rinsing after regeneration increases, the color of the resin darkens, the quality of the water output from the desalination system worsens, and the pH value drops.
Depending on the properties of the resin, strong-base anion resins are prone to contamination by organic substances; after contamination, their exchange capacity decreases, the time required for rinsing after regeneration increases, the color of the resin often darkens, the quality of the water output from the desalination system deteriorates, and the pH value drops. Sampling can also be done for further assessment: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, 10% saltwater is used instead, and the mixture is shaken for 5–10 minutes. The color of the saltwater is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.
Depending on the properties of the resin, strong-base anion resins are prone to contamination by organic substances; after contamination, their exchange capacity decreases, the time required for rinsing after regeneration increases, the color of the resin often darkens, the quality of the water output from the desalination system deteriorates, and the pH value drops. Sampling can also be done for further assessment: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, 10% saltwater is used instead, and the mixture is shaken for 5–10 minutes. The color of the saltwater is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.
Depending on the properties of the resin, strong-base anion resins are prone to contamination by organic substances; after contamination, their exchange capacity decreases, the time required for rinsing after regeneration increases, the color of the resin often darkens, the quality of the water output from the desalination system deteriorates, and the pH value drops. Sampling can also be done for further assessment: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, 10% saltwater is used instead, and the mixture is shaken for 5–10 minutes. The color of the saltwater is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.
Depending on the properties of the resin, strong-base anion resins are prone to contamination by organic substances; after contamination, their exchange capacity decreases, the time required for rinsing after regeneration increases, the color of the resin often darkens, the quality of the water output from the desalination system deteriorates, and the pH value drops. Sampling can also be done for further assessment: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, 10% saltwater is used instead, and the mixture is shaken for 5–10 minutes. The color of the saltwater is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.
Depending on the properties of the resin, strong-base anion resins are prone to contamination by organic substances; after contamination, their exchange capacity decreases, the time required for rinsing after regeneration increases, the color of the resin often darkens, the quality of the water output from the desalination system deteriorates, and the pH value drops. Sampling can also be done for further assessment: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, 10% saltwater is used instead, and the mixture is shaken for 5–10 minutes. The color of the saltwater is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.
Answer: Depending on the properties of the resin, strong-base anion resins are prone to contamination by organic substances. After contamination, their exchange capacity decreases, the time required for rinsing after regeneration increases, the color of the resin often darkens, the quality of the water output from the desalination system deteriorates, and the pH value drops. Sampling can also be done for further assessment: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, 10% saltwater is used instead, and the mixture is shaken for 5–10 minutes. The color of the saltwater is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.
Answer: Depending on the properties of the resin, strong-base anion resins are prone to contamination by organic substances. After contamination, their exchange capacity decreases, the time required for rinsing after regeneration increases, the color of the resin often darkens, the quality of the water output from the desalination system deteriorates, and the pH value drops. Sampling can also be done for further assessment: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, 10% saltwater is used instead, and the mixture is shaken for 5–10 minutes. The color of the saltwater is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.
Depending on the properties of the resin, strong-base anion resins are prone to contamination by organic substances; after contamination, their exchange capacity decreases, the time required for rinsing after regeneration increases, the color of the resin often darkens, the quality of the water output from the desalination system deteriorates, and the pH value drops. Sampling can also be done for further assessment: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, 10% saltwater is used instead, and the mixture is shaken for 5–10 minutes. The color of the saltwater is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.