UFC 3-280-03
23 JULY 2003
Table 2-4 Typical sludge dewatering performance data fixed-volume filter press.
Chemical
Addition-
Feed
Cake
Percent of
Solids
Cycle Time
Pressure
Solids
1
Dry Solids2
(Minutes)3
(kPa)4
Application
(%)
(%)
Aluminum Hydroxide
1 to 10
None or
120240
690 or 1550
25 to 35
Polymer
Barium Titanium Dioxide
40 to 50
None
6090
690 or 1550
60 to 80
Brewery Grain Mash
2 to 10
Polymer or
120210
690 or 1550
25 to 40
Lime-15
Calcium or
4 to 10
None or
90150
690 or 1550
30 to 60
Tri-Calcium Phosphate
Lime-25
Cement Slurry
60 to 70
None
2060
690
80 to 90
Ceramic Clay Slurry
20 to 30
None
60120
1550
60 to 80
Ceramic Wash Down
2 to 6
None or
90240
1550
30 to 45
Sludge
Polymer
Chicken Processing
2 to 8
FeCl3-6 &
90150
1550
30 to 40
Waste
Lime-18
Chrome Hydroxide
2 to 6
None or
150240
690 or 1550
25 to 35
Polymer
Coal Pile
4 to 8
Lime-10
90120
690
30 to 40
Runoff
Coal Slurry
25 to 40
None
4590
690
60 to 80
Cooling Tower Blowdown
4 to 8
Lime-10
90120
690
30 to 40
Copper Hydroxide
1 to 6
None or
120240
690 or 1550
25 to 40
Polymer
Creosote Waste
2 to 8
Lime-30
120180
1550
30 to 40
60210
1550
30 to 50
Domestic Septic Sludge
1 to 10
FeCl3-5 &
Lime-15 or
Lime-15
Fine Ash
6 to 10
None
60120
690 or 1550
40 to 60
Flue Gas Desulfurization
15 to 30
None
3090
690 or 1550
40 to 60
Oxidized Sludge
2-19
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