What chemical is used to destroy cyanide in wastewater?

What chemical is used to destroy cyanide in wastewater?

• A. Sodium hydroxide
• B. Chlorine
• C. Hydrosulfite
• D. Calcium carbonate

Answer: (B)

The chemical used to destroy cyanide in wastewater is chlorine. Chlorine acts as a strong oxidizing agent, effectively breaking down cyanide into non-toxic compounds. When chlorine is added to a wastewater stream containing cyanide, it reacts to convert the cyanide into less harmful substances such as carbon dioxide and nitrogen. Understanding the mechanism behind this is crucial for wastewater treatment processes, especially since cyanide is highly toxic and poses significant risks to both human health and the environment. The use of chlorine is particularly advantageous because it not only neutralizes cyanide but also helps in disinfecting the water, making it safer for downstream processes or discharge. While other chemicals have their specific applications in wastewater treatment, chlorine is specifically recognized for its effectiveness in cyanide destruction. This knowledge is essential for operators working in wastewater management, as they must be aware of the appropriate chemicals for various contaminants to ensure compliance and safety standards.

The chemical used to destroy cyanide in wastewater is chlorine. Chlorine acts as a strong oxidizing agent, effectively breaking down cyanide into non-toxic compounds. When chlorine is added to a wastewater stream containing cyanide, it reacts to convert the cyanide into less harmful substances such as carbon dioxide and nitrogen.

Understanding the mechanism behind this is crucial for wastewater treatment processes, especially since cyanide is highly toxic and poses significant risks to both human health and the environment. The use of chlorine is particularly advantageous because it not only neutralizes cyanide but also helps in disinfecting the water, making it safer for downstream processes or discharge.

While other chemicals have their specific applications in wastewater treatment, chlorine is specifically recognized for its effectiveness in cyanide destruction. This knowledge is essential for operators working in wastewater management, as they must be aware of the appropriate chemicals for various contaminants to ensure compliance and safety standards.