Cast Iron Wheel

Filter plates and cloths are the primary components of a machine called a filter press. These versatile pieces of equipment have been in use since the 1800s, but were mostly used to make clay. Presently, they serve the purpose of separating liquids from solids for the mining, food, and pharmaceutical industries, but their principal use is within wastewater treatment plants. Here we will describe the treatment of wastewater and then break down the specific role that filter plates and cloths play in that process.

Wastewater is defined as any type of fluid, which contains dissolved and suspended solids that is expelled from farms, factories, and residences. Wastewater may even be considered polluted if it offers chemicals, industrial waste, or toxins. As a result of the potential harm wastewater can cause, it must be treated before being released back into the environment to take part in the water cycle. Sometimes, wastewater may even be treated for the express purpose of reuse.

In operation, slurry (the combination of liquids and solids) is pumped under pressure into the machine. A moving component grips several filter plates together using a hydraulic system. The filter plates contain cloth centers that act as sieves.

4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
55.98
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4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
66.74
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4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
60.01
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4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
64.04
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4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
68.76
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248pcs Cast Iron Swivel Casters 3 3.5heavy Duty Steel Top Plate 440lbswheel
248pcs Cast Iron Swivel Casters 3 3.5heavy Duty Steel Top Plate 440lbswheel
35.88
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Vtg Antique Cast Iron 7 34 Caster Wheels Industrial Factory Farm Cart Dolly
Vtg Antique Cast Iron 7 34 Caster Wheels Industrial Factory Farm Cart Dolly
59.99
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4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
55.98
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4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Green
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Green
55.98
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248pcs Cast Iron Swivel Casters 3 3.5heavy Duty Steel Top Plate 440lbswheel
248pcs Cast Iron Swivel Casters 3 3.5heavy Duty Steel Top Plate 440lbswheel
20.88
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Set Of 4 Swivel Stem Casters With 3 Cast Iron Wheels 12mm Coarse Threaded Stem
Set Of 4 Swivel Stem Casters With 3 Cast Iron Wheels 12mm Coarse Threaded Stem
33.95
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248pcs Cast Iron Swivel Casters 3 3.5heavy Duty Steel Top Plate 440lbswheel
248pcs Cast Iron Swivel Casters 3 3.5heavy Duty Steel Top Plate 440lbswheel
12.88
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4 Heavy Duty Caster 8 Polyurethane Cast Iron Wheels Rigid Swivel Brake Red
4 Heavy Duty Caster 8 Polyurethane Cast Iron Wheels Rigid Swivel Brake Red
88.20
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4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Green
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Green
68.76
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Antique Cast Iron Wheels 4 Toler And Sons. Piano Wheels
Antique Cast Iron Wheels 4 Toler And Sons. Piano Wheels
30.00
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10 X 2-12 Rubber On Cast Iron Wheel With Bearing - 1 Ea
10 X 2-12 Rubber On Cast Iron Wheel With Bearing - 1 Ea
32.53
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Band Sawmill Carriage Cast Iron Caster Wheels Carriage Rollers Steampunk Track V
Band Sawmill Carriage Cast Iron Caster Wheels Carriage Rollers Steampunk Track V
86.92
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Set Of 4 Vintage Cast Iron 3-wheeled Dollys W Swivel Casters Wheels 6
Set Of 4 Vintage Cast Iron 3-wheeled Dollys W Swivel Casters Wheels 6
65.00
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3 Od Band Sawmill Carriage Cast Iron Caster Wheels Carriage Rollers Track V
3 Od Band Sawmill Carriage Cast Iron Caster Wheels Carriage Rollers Track V
76.94
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6 X 2 Rubber On Cast Iron Wheel With Bearing - 1 Ea
6 X 2 Rubber On Cast Iron Wheel With Bearing - 1 Ea
16.83
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4 Heavy Duty Caster Wheels Set 4 5 6 8 10 Polyurethane On Cast Iron Wheel
4 Heavy Duty Caster Wheels Set 4 5 6 8 10 Polyurethane On Cast Iron Wheel
42.34
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Industrial Caster Set Vtg Farmhouse Furniture Coffee Table Cast Iron Metal Wheel
Industrial Caster Set Vtg Farmhouse Furniture Coffee Table Cast Iron Metal Wheel
69.00
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4 Vintage Cast Iron Wheels 2 Height Swivel Plate Industrial Casters
4 Vintage Cast Iron Wheels 2 Height Swivel Plate Industrial Casters
80.00
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4 Vintage Tripod Dolly Wheels - Cast Iron
4 Vintage Tripod Dolly Wheels - Cast Iron
80.00
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Vintage Steel Cast Iron Industrial Caster Wheels Heavy Duty Riveted Metal
Vintage Steel Cast Iron Industrial Caster Wheels Heavy Duty Riveted Metal
35.00
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Vintage Steel Cast Iron Industrial Swivel Caster Wheels Heavy Duty Riveted
Vintage Steel Cast Iron Industrial Swivel Caster Wheels Heavy Duty Riveted
45.00
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4 Vintage Cast Iron Wheels 8 Swivel Industrial Casters 8 Inch
4 Vintage Cast Iron Wheels 8 Swivel Industrial Casters 8 Inch
75.00
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4 Vintage Cast Iron Factory Industrial Caster Cart Wheels 8 Green Swivel
4 Vintage Cast Iron Factory Industrial Caster Cart Wheels 8 Green Swivel
54.99
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4 Vintage Industrial Metal Cast Iron Caster Wheels 7 Inch
4 Vintage Industrial Metal Cast Iron Caster Wheels 7 Inch
85.00
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Vintage Factory Cart Cast Iron Caster Wheels Railroad Cart Antique
Vintage Factory Cart Cast Iron Caster Wheels Railroad Cart Antique
139.95
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Vintage Dual Wheel Heavy Duty Cast Iron Swivel Rotating Caster
Vintage Dual Wheel Heavy Duty Cast Iron Swivel Rotating Caster
40.00
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Phoenix Caster Co Cast Iron Double Wheel Swivel Wheels Old Industrial
Phoenix Caster Co Cast Iron Double Wheel Swivel Wheels Old Industrial
99.00
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Lot Of 4 - Payson No. 190 Cast Iron Industrial Caster Wheels 3 Diameter
Lot Of 4 - Payson No. 190 Cast Iron Industrial Caster Wheels 3 Diameter
79.00
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4 Antique Vintage Matching Cast Iron Wheels
4 Antique Vintage Matching Cast Iron Wheels
25.00
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4- Antique Cast Iron Tripod Dolly Caster Wheels Stove Piano Moving
4- Antique Cast Iron Tripod Dolly Caster Wheels Stove Piano Moving
75.00
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4 Vintage Cast Iron Wheels 2 Height Swivel Industrial Casters Pat 1887
4 Vintage Cast Iron Wheels 2 Height Swivel Industrial Casters Pat 1887
80.00
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Pair Of Vintage Cast Iron Factory Industrial Caster Cart Wheels
Pair Of Vintage Cast Iron Factory Industrial Caster Cart Wheels
35.00
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Antique Cast Iron Factory Or Railroad Cart Swivel Caster Wheel 7 Dia. 9 Tall
Antique Cast Iron Factory Or Railroad Cart Swivel Caster Wheel 7 Dia. 9 Tall
35.00
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Set Of 2 - Vintage Cast Iron Casters Wheels With Axle
Set Of 2 - Vintage Cast Iron Casters Wheels With Axle
90.00
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8 Swivel Plate Casters Heavy Duty Cast Iron Wheel Set Of 4 With Brake
8 Swivel Plate Casters Heavy Duty Cast Iron Wheel Set Of 4 With Brake
200.00
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4 Heavy Duty Caster Set 4 5 6 Polyurethane Cast Iron Wheels No Mark Round
4 Heavy Duty Caster Set 4 5 6 Polyurethane Cast Iron Wheels No Mark Round
55.44
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4 5 Cast Iron Wheels No Mark Set Of 4 Heavy Duty
4 5 Cast Iron Wheels No Mark Set Of 4 Heavy Duty
47.96
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Industrial Vintage Cast Iron Cart Wheels 5 1316 X 2 516 By 1 516 Bore
Industrial Vintage Cast Iron Cart Wheels 5 1316 X 2 516 By 1 516 Bore
25.00
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Vintage Lumber Cart Cast Iron Wheel 12h
Vintage Lumber Cart Cast Iron Wheel 12h
49.99
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8 Swivel Plate Casters Heavy Duty Cast Iron Wheel Set Of 4 With Brake
8 Swivel Plate Casters Heavy Duty Cast Iron Wheel Set Of 4 With Brake
225.00
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2- Antique Cast Iron Tripod Dolly Caster Wheels Stove Piano Moving
2- Antique Cast Iron Tripod Dolly Caster Wheels Stove Piano Moving
39.00
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Vintage Industrial Cast Iron Caster 3.23 X 1.5 Nutting Wheels Faribault Minn
Vintage Industrial Cast Iron Caster 3.23 X 1.5 Nutting Wheels Faribault Minn
29.99
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4 Pcs Scaffold Caster 6 8 Black Red Wheels Stem Size 1-38 X 4
4 Pcs Scaffold Caster 6 8 Black Red Wheels Stem Size 1-38 X 4
89.10
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Set Of 4 Vintage Antique Cast Iron Caster Wheels
Set Of 4 Vintage Antique Cast Iron Caster Wheels
29.95
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Vintage Industrial Factory Cart Cast Iron Wheel Casters Barn Garage Steampunk
Vintage Industrial Factory Cart Cast Iron Wheel Casters Barn Garage Steampunk
24.50
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248pcs Cast Iron Swivel Casters 3 3.5heavy Duty Steel Top Plate 440lbswheel
248pcs Cast Iron Swivel Casters 3 3.5heavy Duty Steel Top Plate 440lbswheel
14.88
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4 Pcs Scaffold Caster 6 8 Black Red Wheels Stem Size 1-38 X 4
4 Pcs Scaffold Caster 6 8 Black Red Wheels Stem Size 1-38 X 4
103.95
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4 Vintage Cast Iron Wheels 4 Fixed Industrial Casters 4 Inch
4 Vintage Cast Iron Wheels 4 Fixed Industrial Casters 4 Inch
75.00
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Vintage Cast Iron Machine Hand Wheel 12 Diameter X 78 Keyed Bore
Vintage Cast Iron Machine Hand Wheel 12 Diameter X 78 Keyed Bore
69.99
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2 Vintage Cast Iron Dollies With Swivel Caster Wheels
2 Vintage Cast Iron Dollies With Swivel Caster Wheels
19.95
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Vintage 2 Industrial Swivel Casters Set Of 4 Red Cast Iron Wheels
Vintage 2 Industrial Swivel Casters Set Of 4 Red Cast Iron Wheels
49.75
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4 Antique Vintage Matching Cast Iron Wheels
4 Antique Vintage Matching Cast Iron Wheels
25.00
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Rare 12 Rigid Plate Casters Heavy Duty Cast Iron Wheel Set Of 4 No Brake
Rare 12 Rigid Plate Casters Heavy Duty Cast Iron Wheel Set Of 4 No Brake
400.00
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4 Swivel Casters 6 Heavy Duty Cast Iron Hub Non Skid Mark Wheels 2 Swivel Brake
4 Swivel Casters 6 Heavy Duty Cast Iron Hub Non Skid Mark Wheels 2 Swivel Brake
61.90
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4 Swivel Casters - 4 Heavy Duty Cast Iron Hub Core Poly Wheel Non Skid Mark
4 Swivel Casters - 4 Heavy Duty Cast Iron Hub Core Poly Wheel Non Skid Mark
57.15
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4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
60.01
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4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Red
78.71
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4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Green
4 Heavy Duty Caster Set 4 5 6 Polyurethane On Cast Iron Wheels No Mark Green
60.01
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4 Heavy Duty Caster 8 Polyurethane Cast Iron Wheels Rigid Swivel Brake Red
4 Heavy Duty Caster 8 Polyurethane Cast Iron Wheels Rigid Swivel Brake Red
96.30
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Antique Cast Iron Heavy Duty Wheel Caster Castor
Antique Cast Iron Heavy Duty Wheel Caster Castor
65.00
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Cast Iron Cultipacker Wheel Oliver New Old Stock
Cast Iron Cultipacker Wheel Oliver New Old Stock
50.00
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4 Antique Cast Iron Piano Casters Swivel Iron Wheels Steampunk
4 Antique Cast Iron Piano Casters Swivel Iron Wheels Steampunk
39.99
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4 5 Cast Iron Wheels No Mark Set Of 4 Heavy Duty
4 5 Cast Iron Wheels No Mark Set Of 4 Heavy Duty
47.96
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4 Vintage Cast Iron Wheels 2-34 Height Swivel Plate Industrial Casters 1888
4 Vintage Cast Iron Wheels 2-34 Height Swivel Plate Industrial Casters 1888
175.00
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Vintage Industrial Factory Cart Wheels Set Of 4 Cast Iron Steam Punk W Bolts
Vintage Industrial Factory Cart Wheels Set Of 4 Cast Iron Steam Punk W Bolts
115.00
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4 Heavy Duty Caster Set 4 5 6 Polyurethane Cast Iron Wheels No Mark Round
4 Heavy Duty Caster Set 4 5 6 Polyurethane Cast Iron Wheels No Mark Round
66.60
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6 Heavy Duty Steel Plate Cast Iron Casters Swivel Metal Industrial Wheel Pair
6 Heavy Duty Steel Plate Cast Iron Casters Swivel Metal Industrial Wheel Pair
75.00
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2- Antique Cast Iron Tripod Dolly Caster Wheels Stove Piano Moving Bassick 900
2- Antique Cast Iron Tripod Dolly Caster Wheels Stove Piano Moving Bassick 900
25.00
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Vintage Industrial Cast Iron 8 Dia. X 2 Wide 1 Center Caster Wheel Steampunk
Vintage Industrial Cast Iron 8 Dia. X 2 Wide 1 Center Caster Wheel Steampunk
49.99
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Mini Lathe 3 Inch Cast Iron Hand Wheel - Made In Usa
Mini Lathe 3 Inch Cast Iron Hand Wheel - Made In Usa
49.99
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Industrial Wheels Stem Casters Cast Iron Coffee Table Steampunk Furniture
Industrial Wheels Stem Casters Cast Iron Coffee Table Steampunk Furniture
29.99
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4 Vintage Cast Iron Wheels 2-12 Height Swivel Plate Industrial Casters
4 Vintage Cast Iron Wheels 2-12 Height Swivel Plate Industrial Casters
95.00
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4x2 Cast Iron Rigid Caster Wheels
4x2 Cast Iron Rigid Caster Wheels
49.99
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4 Heavy Duty Caster 8 Polyurethane Cast Iron Wheels Rigid Swivel Brake Green
4 Heavy Duty Caster 8 Polyurethane Cast Iron Wheels Rigid Swivel Brake Green
89.20
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4 Antique Vintage Matching Cast Iron Wheels
4 Antique Vintage Matching Cast Iron Wheels
40.00
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Vintage Factory Cart Steelcast Iron Wheels
Vintage Factory Cart Steelcast Iron Wheels
199.99
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4 Barn Fresh Antique Cast Iron Spoked Industrial13 Wheels-hit Miss Cart
4 Barn Fresh Antique Cast Iron Spoked Industrial13 Wheels-hit Miss Cart
99.99
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Hand Wheel - 10 Cast Iron
Hand Wheel - 10 Cast Iron
310.00
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Antique Cast Iron Industrial Cart Wheels Set Of 4 Casters Steam Train 4in X 1in
Antique Cast Iron Industrial Cart Wheels Set Of 4 Casters Steam Train 4in X 1in
112.50
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Swivel Caster Industrial Cast Iron 3.23 X 1.5 Nutting Wheels Faribault Minn
Swivel Caster Industrial Cast Iron 3.23 X 1.5 Nutting Wheels Faribault Minn
29.99
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Set Of 4 Cast Iron Cart Wheels Casters Metal Industrial Steampunk 4 Inch.
Set Of 4 Cast Iron Cart Wheels Casters Metal Industrial Steampunk 4 Inch.
145.00
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2 Phoenix Caster Wheels Vintage Cast Iron 10 Work
2 Phoenix Caster Wheels Vintage Cast Iron 10 Work
45.00
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8 Vintage Cast Iron Porcelain Wheels
8 Vintage Cast Iron Porcelain Wheels
40.00
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Albion 62ca06201s Heavy Duty Swivel Caster 6x2 Cast Iron Wheel-set Of 4
Albion 62ca06201s Heavy Duty Swivel Caster 6x2 Cast Iron Wheel-set Of 4
195.00
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4 Antique Vintage Matching Cast Iron Wheels
4 Antique Vintage Matching Cast Iron Wheels
25.00
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4 Heavy Duty Caster 8 Polyurethane Cast Iron Wheels Rigid Swivel Brake Green
4 Heavy Duty Caster 8 Polyurethane Cast Iron Wheels Rigid Swivel Brake Green
93.23
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8 Inch Scaffold Caster Wheel Cast Iron Hub Grease Fitting 4 Pack Heavy-duty
8 Inch Scaffold Caster Wheel Cast Iron Hub Grease Fitting 4 Pack Heavy-duty
137.46
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Unknown Brand Cast Iron Caster Wheel 8 Diameter 3 Width 1 Id
Unknown Brand Cast Iron Caster Wheel 8 Diameter 3 Width 1 Id
50.00
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4 Antique Vintage Matching Cast Iron Wheels
4 Antique Vintage Matching Cast Iron Wheels
25.00
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4 Antique Vintage Matching Cast Iron Wheels
4 Antique Vintage Matching Cast Iron Wheels
25.00
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4 Antique Vintage Matching Cast Iron Wheels
4 Antique Vintage Matching Cast Iron Wheels
25.00
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4 Heavy Duty Caster Set 4 Polyurethane On Cast Iron Wheels No Mark Red Swivel
4 Heavy Duty Caster Set 4 Polyurethane On Cast Iron Wheels No Mark Red Swivel
53.74
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Antique Hit Miss Gas Engine Cart Parts Set Cast Iron Six Spoke Wheels
Antique Hit Miss Gas Engine Cart Parts Set Cast Iron Six Spoke Wheels
230.00
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Hamilton 517 8 Flange Wheelcast Iron 2 Bore 12 Keyway 4500 Lb Capicity
Hamilton 517 8 Flange Wheelcast Iron 2 Bore 12 Keyway 4500 Lb Capicity
20.00
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4 Antique Vintage Matching Cast Iron Wheels
4 Antique Vintage Matching Cast Iron Wheels
25.00
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As the slurry runs through the plates, the liquid portion passes through these sieves and the solids are left behind to form what are known as "cakes." Depending on their composition, wastewater cakes are then discarded, or they move onto further processing that incorporate wash liquors, heating, vacuum, and air, so they are able to be safely disposed of in landfills.

Among different types of presses that are capable of handling the treatment process, the design using filter plates and cloths remains the most fundamental and efficient. The capability of the equipment is undisputed, as these machines can remove as much as 99 % of solid waste products and sludge from fluid. The use of these presses speeds up the overall treatment process, and also reduces the "biochemical oxygen demand" or "BOD" of the fluid, meaning the amount of oxygen consumed by microorganisms breaking down the organic waste in the water (secondary treatment). For all these reasons and more, the nearly 200-year-old technology is now a mainstay of the wastewater treatment industry.

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