【Daily Question】Chemical Engineering Principles 352: Resins in Desalination Systems (March 31)
Thread Content
This post was last edited by Zaihui Kangqiao on 2016-4-8 at 16:27. The Chemical Engineering Theory section is launching a \"One Question per Day\" activity 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! Wishing everyone a happy Christmas! Answers to the questions in the \"One Question per Day\" activity can be viewed directly; the thread 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: 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 performed for further assessment: the resin is washed with water to remove any substances adhering to its surface, the washing water is drained, 10% saline solution is used instead, and the mixture is shaken for 5–10 minutes. The color of the saline solution 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 darkens, the quality of the water output from the desalination system deteriorates, and the pH level drops. Samples can also be taken for further analysis: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, and 10% saltwater is used instead. The mixture is shaken for 5–10 minutes, and the color of the saltwater is observed. As the degree of contamination increases, the color changes from light yellow to amber, brown, dark brown, and finally 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 performed for further assessment: the resin is washed with water to remove any substances adhering to its surface, the washing water is drained, 10% saline solution is used instead, and the mixture is shaken for 5–10 minutes. The color of the saline solution is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.
What are the typical symptoms when the resin in a desalination system is 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 darkens, the quality of the water output from the desalination system deteriorates, and the pH level drops. Samples can also be taken for further analysis: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, and 10% saltwater is used instead. The mixture is shaken for 5–10 minutes, and the color of the saltwater is observed. As the degree of contamination increases, the color changes from light yellow to amber, brown, dark brown, and finally 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 darkens, the quality of the water output from the desalination system deteriorates, and the pH level drops. Samples can also be taken for further analysis: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, and 10% saltwater is used instead. The mixture is shaken for 5–10 minutes, and the color of the saltwater is observed. As the degree of contamination increases, the color changes from light yellow to amber, brown, dark brown, and finally 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 darkens, the quality of the water output from the desalination system deteriorates, and the pH level drops. Samples can also be taken for further analysis: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, and 10% saltwater is used instead. The mixture is shaken for 5–10 minutes, and the color of the saltwater is observed. As the degree of contamination increases, the color changes from light yellow to amber, brown, dark brown, and finally 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 darkens, the quality of the water output from the desalination system deteriorates, and the pH level drops. Samples can also be taken for further analysis: the resin is washed with water to remove any substances attached to its surface, the washing water is drained, and 10% saltwater is used instead. The mixture is then shaken for 5–10 minutes, and the color of the saltwater is observed. As the degree of contamination increases, the color changes from light yellow to amber, brown, dark brown, and finally 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 performed for further assessment: the resin is washed with water to remove any substances adhering to its surface, the washing water is drained, 10% saline solution is used instead, and the mixture is shaken for 5–10 minutes. The color of the saline solution 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 performed for further assessment: the resin is washed with water to remove any substances adhering to its surface, the washing water is drained, 10% saline solution is used instead, and the mixture is shaken for 5–10 minutes. The color of the saline solution is then observed; as the degree of contamination increases, so does the color intensity. From light yellow to amber-brown-dark brown-black.