Page 354 - Fundamentals of Water Treatment Unit Processes : Physical, Chemical, and Biological

Flocculation 309

(11:20b) (11:21b) ft 2 )(11:22b) (11:23b) (11:24b) (11:25b) (11:26b)

s 2 =ft 4 ) ft 3 )(A i

(lb f N(arms) (r 3 i r 3 A i i
1:94 rad 3 n(blades) X n(blades) X
Units ¼ v 3 s 3 N(arms) r 3 A i i n(blades) X r 3 A i i
Customary (lb f =ft 3 ) s 2 ft 32:2 (1 k) 3 ft 2 ) rad 3 s 3 (1 k) 3 v 3 N(arms) n(blades) X n(blades) X r 3 A i i

U.S. 62:4 ¼ slugs ft 3 ft 3 )(A i (r 3 i v 3 ft 3 ft 2 (1 k) 3 v 3 N(arms) (1 k) 3 (2pn) 3 N(arms)
(lb f =ft 3 ) s 2 ft 32:2 r w ¼ 1 C D n(blades) X (1 k) 3 rad 3 s 3 (1 k) 3 n 3 N(arms)

g 2 s 2 lb f ft 4 s 2 lb f ft 4 lb f ft s lb f ft s
¼ wheel) 1:94 1:94 1:94 1:94 lb f ft s
r w (slugs=ft 3 ) P(paddle 1 C D ¼ 2 1 C D ¼ 2 1 C D ¼ 2 1 C D ¼ 2 240C D ¼

(11:20a) (11:21a) (11:22a) (11:23a) (11:24a) (11:25a) (11:26a)

Equations (N s 2 =m 4 ) m 2 ) m 3 )(A i

Dissipation 998 ¼ rad 3 N(arms) s 3 n(blades) X (r 3 i n(blades) X r 3 A i i units, r 3 A i i r 3 A i i

Energy reference, (N=m 3 ) s 2 9790 m 9:81 v 3 (1 k) 3 m 2 ) m 3 )(A i rad 3 N(arms) s 3 (1 k) 3 v 3 N(arms) Customary SI=U.S. n(blades) X r 3 A i i n(blades) X n(blades) X

Paddle-Wheel conversion—for (N=m 3 ) s 2 ¼ m 9:81 equation, in kg r w ¼ 1 C D m 3 2 n(blades) X (r 3 i inserted, v 3 (1 k) 3 consolidated, 1 m 3 m 2 s 3 in expression (1 k) 3 v 3 N(arms) gives, (1 k) 3 (2pn) 3 N(arms) terms, (1 k) 3 n 3 N(arms)

of force g ¼ inserted wheel) is water kg m 3 are N s 2 m 4 for m i s rev=s n in m i s numerical m i 998N s
11.5 to (kg=m 3 ) Dimensions P(paddle of Density 1 C D 998 Dimensions 1 C D 998 result h 1 C D 998N Expressing h 1 C D 998N Consolidating h 124C D

TABLE Delineation Units SI Mass 1. r w 2. 3. ¼ 2 4. ¼ 2 Final 5. ¼ 2 6. ¼ 2 7. ¼