【Daily Question】Chemical Engineering Principles 419: Anion Resin Contamination (September 1)
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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! Wishing you a happy Christmas! Answers to the questions in the \"One Question per Day\" campaign can be viewed directly by replying to the post, and 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: Briefly describe the characteristics of anionic resin contamination and the methods for restoring it. Answer: Depending on the degree of contamination of the anionic resin, different revival methods are used or a combination of these methods is applied. Due to quality issues with the regenerating agent, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5%–10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anionic resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.
Depending on the degree of contamination of the anionic resin, different revival methods are employed or used in combination. Due to quality issues with the regenerant, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5% to 10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anion resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.
Depending on the degree of contamination of the anionic resin, different revival methods are employed or used in combination. Due to quality issues with the regenerating agent, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5%–10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anionic resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.
Depending on the degree of contamination of the anionic resin, different revival methods are employed or used in combination. Due to quality issues with the regenerant, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5% to 10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anion resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.
Depending on the degree of contamination of the anionic resin, different revival methods are employed or used in combination. Due to quality issues with the regenerating agent, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5%–10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anionic resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.
Depending on the degree of contamination of the anionic resin, different revival methods are employed or used in combination. Due to quality issues with the regenerating agent, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5%–10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anionic resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.
Methods: Depending on the degree of contamination of the anion resin, different restoration methods were employed or used in combination. Due to quality issues with the regenerating agent, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5%–10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anionic resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.
Briefly describe the characteristics of anionic resin contamination and the methods for recovery. Answer: Depending on the degree of contamination of the anionic resin, different revival methods are used or a combination of these methods is applied. Due to quality issues with the regenerating agent, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5%–10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anionic resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.
Answer: Depending on the degree of contamination of the anionic resin, different revival methods are used or a combination of these methods is applied. Due to quality issues with the regenerating agent, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5%–10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anionic resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.
Depending on the degree of contamination of the anionic resin, different revival methods are employed or used in combination. Due to quality issues with the regenerant, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5% to 10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anion resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.
Depending on the degree of contamination of the anionic resin, different revival methods are employed or used in combination. Due to quality issues with the regenerating agent, iron contamination often occurs, causing the anion resin to turn black; this can be addressed by treating it with 5%–10% hydrochloric acid. The most common type of contamination affecting anionic resins is organic contamination, which is characterized by a decrease in exchange capacity, an increased backwash time after regeneration, a darkening of the resin color, and a deterioration in the quality of water output from the desalination system. For anionic resins contaminated by different types of water pollutants, specific screening tests are required to determine the amounts of NaCl and NaOH; it is common to use a solution containing 10% NaCl and 1% NaOH, in a volume at least twice that of the resin, for soaking and reactivation.