What is the process of adding CO₂ to water known as?

What is the process of adding CO₂ to water known as?

• A. Degasification
• B. Recarbonation
• C. Chlorination
• D. Coagulation

Answer: (B)

The process of adding CO₂ to water is known as recarbonation. This technique is used in water treatment to adjust the pH of water, particularly to reduce alkalinity. When CO₂ is introduced into water, it reacts to form carbonic acid, which helps lower the pH by increasing the concentration of hydrogen ions in the solution. This process is crucial for maintaining a balanced pH level in drinking water and helps in the prevention of scaling in pipes and treatment systems. In water treatment processes, recarbonation is often employed after the water has been softened or treated in such a way that its alkalinity has been reduced. This addition of CO₂ can also aid in the removal of heavy metals and improve the stability of the water once it reaches the distribution system. Understanding the role of recarbonation is vital for operators to ensure water quality and compliance with health regulations.

The process of adding CO₂ to water is known as recarbonation. This technique is used in water treatment to adjust the pH of water, particularly to reduce alkalinity. When CO₂ is introduced into water, it reacts to form carbonic acid, which helps lower the pH by increasing the concentration of hydrogen ions in the solution. This process is crucial for maintaining a balanced pH level in drinking water and helps in the prevention of scaling in pipes and treatment systems.

In water treatment processes, recarbonation is often employed after the water has been softened or treated in such a way that its alkalinity has been reduced. This addition of CO₂ can also aid in the removal of heavy metals and improve the stability of the water once it reaches the distribution system. Understanding the role of recarbonation is vital for operators to ensure water quality and compliance with health regulations.