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Design and Calculation UASB Reactor for Sludge Treatment
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Design and Calculation UASB Reactor for Sludge Treatment
sludge treatment, design and calculation of sluDescripción completa...
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David Lambert
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3
kg COD /m /d kg COD/d 2
9.8 m /s 0.002 m 3 1020 kg/m
g dp ρp
settling
m 2
980 kg/m 0.001002 kg/m/s 2 1.02245E-06 m /s 0.09 m/s 5.22 m/min 312.97 m/h velocity up 68.53% % 0.00059581 m/s F COD
20 40 800
Limit 2500 Required Conversion
μ/ρ
40000
mg/L
40000
μ/ρ
v
m
H D:H Base Area velocity
6 2.38 160.00 0.13 0.0021 0.0000
m Desired 2 =πD /4 2 =F/(πD /4)
recycle ratio recycle ratio
(based on % of settling velocity) (based on minimum fluidization velocity) F π D2 F/(πD2/4)
17.16 1.459144 20 3.142 203.6919 0.125
g/m
3
TRIAL CALCULATION g dp
9.8
m2/s
0.025
m/s Ns/m2
ρp
1500
m kg/m3
ρm
994
kg/m3
m2/s
μ
0.000693
kg/m/s
=
0
m/s
μf
14.27
mg/L 93.75% kg/m3
u Dp
960.00
D
3
m /h 3 kg COD/m kg COD/hr
ρuD/μ
Re ρf
3
mm
3
ρm μ v velocity
20 19200
3 (ρfumf2/Ф (ρspD -ρpfє)g mf )*(150(1-єmf)μf/(ФfDpumfρf)+1.75)
(ρp-ρf)g
4958.8
єmf
0.425 3 Фsєmf 1/14 Фs 0.930475997 1.75(ρfumf2/ФsDpєmf3) 2
150(1-єmf)μfumf/(Фs Dp2єmf3) B=
B=
960400
umf2
+
umf 0.059580968 m/s 0.000524 Goal Seek B=0 By Changing C45
26006.37 OK
960400
umf2
26006.37
umf
umf
-
4958.8
(4V /π H) 2 2 m m/h m/min m/sec
1/2
100 90 80 70 % conversion 60 50 40 30 20 10 0 0
10
20
30
40
50
60
70
80
kg COD/m3/d
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