Tri-sodium phosphate is used in boiler water treatment to reduce____________________?
Correct answer: B. Caustic embrittlement
- A. Turbidity
- B. Caustic embrittlement
- C. Suspended silica
- D. Dissolved oxygen
Explanation
Phosphate conditioning with trisodium phosphate helps prevent caustic embrittlement by controlling free caustic soda and converting hardness-forming calcium into removable sludge. It is not primarily used to remove dissolved oxygen or turbidity.
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