1.

For rock packing low- rate trickling filters what is the hydraulic loading assumed?

A. 1-4 m<sup>3</sup>/m<sup>2</sup>.d
B. 4-8 m<sup>3</sup>/m<sup>2</sup>.d
C. 8- 12 m<sup>3</sup>/m<sup>2</sup>.d
D. 12-15 m<sup>3</sup>/m<sup>2</sup>.d
Answer» B. 4-8 m<sup>3</sup>/m<sup>2</sup>.d


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