UFC 3-280-03
23 JULY 2003
Table 5-2. Selection chart of recessed variable-volume
plate and frame filter press units.
No. of
Minimum
Unit
Total
Volume
Volume
Volume
Filter
Total
Total
Chambers
Units
I.D.
Units
without
with
of Each
Size
Volume
Volume
1
Required
with one
standby
standby
Unit
(mm)
with
with One
3
(ft )
Standby
Unit
Unit
Minimum
Standby
2
3
(%)
(%)
Units
Unit
3
3
(ft )
(ft )
33
0.28
10
2.8
11
3.1
104
115
A
630
(max)
16
0.23
12
2.8
13
3.0
104
111
B
800
(min)
53
0.71
4
2.8
5
3.6
104
133
C
800
(max)
31
0.71
4
2.8
5
3.6
104
133
D
1000
(min)
62
1.42
2
2.8
3
4.3
104
159
E
1000
(max)
62
2.12
2
4.2
3
6.4
156
237
F
1200
(min)
3
3
Conversions: 1 m = 35.3 ft , 1 inch= 25.4 mm.
1
Data compiled from actual manufacturer's data.
2
Total volume without standby unit/actual volume required.
3
Total volume with one standby unit/actual volume required.
5-3.2.3
Sludge Storage, Conditioning, and Feed Systems.
5-3.2.3.1 Development of System Components. The flow scheme in Figure 5-2
shows sludge storage, conditioning, and feed systems. The associated assumptions
related to the design criteria presented below are based on information given in
Paragraph 2-4.
a. A sludge storage tank will be located upstream of the sludge conditioning
system.
b. A dry lime storage and mixing system will be used downstream of the
sludge storage tank. This system will have the capacity to store a 30-day supply of
hydrated lime, that will be provided in 45-kg (100-pound) bags. The dry lime will be fed
in the required amount into a dilution tank by two volumetric feeders. A hydrated bagged
lime system was selected because of the low quantity of lime required, as described in
Subparagraph 2-4.6.1. A 10% slurry of calcium hydroxide (CaOH2) by weight will then
be mixed and metered into the conditioning tank.
c. A dry polymer storage and mixing system will be used downstream of the
sludge storage tank. This system will have the capacity to store a 30-day supply of dry
5-14
Previous Page
