All Volatile Treatment involves the use of volatile compounds in water purification, including hydrazine, ammonia, ethanolamine, and methoxypropylamine. What is the name of this treatment?

• A. All Volatile Treatment
• B. Steam Generator Blowdown
• C. Ion Exchange
• D. Biofouling

Answer: (A)

Volatile treatment is a water chemistry approach that protects the entire steam and condensate cycle by using chemicals that stay in the vapor phase. The idea is to keep protective conditions throughout the system without leaving non-volatile residues in the steam paths. All Volatile Treatment uses volatile agents, including hydrazine as an oxygen scavenger and various volatile amines such as ammonia and other amino compounds, to maintain a high, alkaline pH in the condensate and feedwater. Because these chemicals vaporize with the steam, they ride along into boiler surfaces and condensate lines, forming protective conditions and reducing corrosion wherever the steam travels. The specific combination of hydrazine and volatile amines like ammonia, ethanolamine, or methoxypropylamine is characteristic of this approach, which is why this treatment is named All Volatile Treatment. Other options describe different processes—Steam Generator Blowdown removes dissolved solids, Ion Exchange purifies water non-volatily, and Biofouling refers to unwanted biological growth—so they do not define this volatile-chemical strategy.