Filtration of water in a paper mill is done by a/an _______________ filter?
Correct answer: A. Open sand
- A. Open sand
- B. Plate and frame
- C. Vacuum leaf
- D. Sparkler
Explanation
Open sand filters are commonly used for large-volume water clarification, including water treatment in paper mills. Plate-and-frame, vacuum-leaf, and sparkler filters are more typical of specialized slurry or polishing duties.
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