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The disinfection efficiency of chlorine in Water treatment
- a)is not dependent of pH value
- b)is increase by increased pH value
- c)remains constant at all pH values
- d)is reduced by increased pH values
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The disinfection efficiency of chlorine in Water treatmenta)is not dep...
The disinfection efficiency of chlorine in Water treatment reduces if pH goes above 8. Generally pH slightly less than 7 is recommended for effective treatment.
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The disinfection efficiency of chlorine in Water treatmenta)is not dep...
Disinfection Efficiency of Chlorine in Water Treatment
Chlorine is widely used as a disinfectant in water treatment to eliminate harmful microorganisms. However, the effectiveness of chlorine can be affected by various factors, including pH value. The disinfection efficiency of chlorine in water treatment is influenced by the pH value of the water.
Effect of pH on Disinfection Efficiency of Chlorine
The disinfection efficiency of chlorine is reduced by increased pH values. This is because the efficacy of chlorine is dependent on the formation of hypochlorous acid (HOCl) and hypochlorite ion (OCl-) in water. The HOCl is a more potent disinfectant than OCl-. The formation of HOCl in water is pH-dependent, and it decreases as the pH value of the water increases.
At a lower pH value, the concentration of HOCl is higher, resulting in more effective disinfection. However, as the pH value increases, the concentration of OCl- increases, and the concentration of HOCl decreases. This reduces the effectiveness of chlorine as a disinfectant.
Conclusion
In conclusion, the disinfection efficiency of chlorine in water treatment is reduced by increased pH values. Therefore, it is essential to consider the pH value of the water when using chlorine as a disinfectant. Water treatment plants must adjust the pH value to ensure that the disinfection process is effective.
Chlorine is widely used as a disinfectant in water treatment to eliminate harmful microorganisms. However, the effectiveness of chlorine can be affected by various factors, including pH value. The disinfection efficiency of chlorine in water treatment is influenced by the pH value of the water.
Effect of pH on Disinfection Efficiency of Chlorine
The disinfection efficiency of chlorine is reduced by increased pH values. This is because the efficacy of chlorine is dependent on the formation of hypochlorous acid (HOCl) and hypochlorite ion (OCl-) in water. The HOCl is a more potent disinfectant than OCl-. The formation of HOCl in water is pH-dependent, and it decreases as the pH value of the water increases.
At a lower pH value, the concentration of HOCl is higher, resulting in more effective disinfection. However, as the pH value increases, the concentration of OCl- increases, and the concentration of HOCl decreases. This reduces the effectiveness of chlorine as a disinfectant.
Conclusion
In conclusion, the disinfection efficiency of chlorine in water treatment is reduced by increased pH values. Therefore, it is essential to consider the pH value of the water when using chlorine as a disinfectant. Water treatment plants must adjust the pH value to ensure that the disinfection process is effective.
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The disinfection efficiency of chlorine in Water treatmenta)is not dependent of pH valueb)is increase by increased pH valuec)remains constant at all pH valuesd)is reduced by increased pH valuesCorrect answer is option 'D'. Can you explain this answer?
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