Page 324 - Fundamentals of Water Treatment Unit Processes : Physical, Chemical, and Biological

Mixing 279

G (s 1 ) 7968 2911 1333 704 411 257 1333 1333 1333 1333 471 1333 2449 3771

(kW=m 3 ) 83.30 11.12 18.66
P=V 2.33 0.65 0.22 0.09 2.33 2.33 2.33 2.33 0.29 2.33 7.87

V(mixer) (m 3 ) 0.321 0.766 1.487 2.570 4.081 6.092 0.744 1.115 1.487 2.231 1.487 1.487 1.487 1.487 A L ¼ V (2001)

Kenics Q (rg) h L
(W) 8513 3468 1673 903 529 1734 2601 3468 5202 434 3468 ¼
P 26761 11705 27746 f(L=D)(v 2 =2g) of units P

h L (m) 3.922 1.248 0.508 0.245 0.132 0.078 0.254 0.381 0.508 0.762 0.127 0.508 1.144 2.033 ¼ h L on based

L(mixer) (m) 1.96 2.623 3.26 3.91 4.57 5.22 1.63 2.45 3.26 4.89 3.26 3.26 3.26 3.26 (2001) Calculated

Elements (#) 4 4 4 4 4 4 2 3 4 6 4 4 4 4 al. et Trial

f 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Amirtharajah

R 1476889 1107667 886134 738445 632953 553834 886134 886134 886134 886134 443067 886134 1329200 1772267 rvd=m ¼
R

v(pipe) (m=s) 4.2 2.4 1.5 1.1 0.8 0.6 1.5 1.5 1.5 1.5 0.8 1.5 2.3 3.1 Q=A ¼

v

Mixer d(pipe) (m) 0.457 0.610 0.762 0.914 1.067 1.219 0.762 0.762 0.762 0.762 0.762 0.762 0.762 0.762

Static (in.) 18 24 30 36 42 48 30 30 30 30 30 30 30 30 Trial

for (m 3 =s) 0.696 0.696 0.696 0.696 0.696 0.696 0.696 0.696 0.696 0.696 0.348 0.696 1.044 1.392
Calculations Q (mgd) 20 20 20 20 20 20 20 20 20 20 10 20 30 40 Given

G
P, r(water) (kg=m 3 ) selection 999.7 999.7 999.7 999.7 999.7 999.7 999.7 999.7 999.7 999.7 999.7 999.7 999.7 999.7 Calculated
Headloss, and elements variation
CD10.14 of m=s 2 m(water) s=m 2 ) (N d(pipe) of 0.001312 0.001312 0.001312 0.001312 0.001312 0.001312 # of 0.001312 0.001312 0.001312 0.001312 flow of 0.001312 0.001312 0.001312 0.001312 Calculated

TABLE Example 9.80665 ¼ g T (8C) Effect (a) 20 20 20 20 20 20 Effect (b) 20 20 20 20 Effect (c) 20 20 20 20 Given