Used Decanter Centrifuges for Sale
Decanter centrifuges are continuous separation systems designed to remove solids from liquids using high-speed rotational force. These horizontal centrifuges feature a rotating bowl and an internal scroll conveyor that continuously separates and discharges solids, making them ideal for high-throughput processing. Used decanter centrifuges are widely used in wastewater treatment, chemical processing, food production, and industrial manufacturing where efficient solid-liquid separation is required. Aaron Equipment offers used decanter centrifuges for sale in a range of bowl sizes, drive configurations, and capacities to meet various process demands.
Stock No.:
46869001Used Westfalia AD-0509 Solid Bowl Decanter Centrifuge – 4500 RPM, 316 SS
Used- Westfalia Solid Bowl Decanter Centrifuge, Model AD-0509. 316 stainless steel construction (product contact areas). Bowl diameter 300 mm, maximum bowl speed 4500 rpm, 4" single lead with welded hard face, lined cake solids discharge ports with cake flingers, ring liquid dam plates, base, casing gearbox, feed pipe with poly addition port, approximately 15hp main drive motor, 2.2 kw (2.9hp), 220/380/3/50 back drive. Our freight specialists can assist you with door to door transportation and all customs documents needed to make the process go as smoothly as possible.
MFR: Westfalia
Stock No.:
41174044Used Mobile Wastewater Treatment Decanter System – Alfa Laval AVNX-4045 Centrifuge
Used- Mobile Waste Water Treatment Decanter System consisting of (1) used Alfa Laval AVNX-4045/AVNX 919B-31G Solid Bowl Decanter Centrifuge. 316 Stainless Steel construction (product contact areas). Maximum bowl speed 3250 rpm. Capacity; approximately 150 kg dry solids/hour; 6 m3/hour with 2.5 % dry solids. Single row of lined cake discharge ports, single lead conveyor, base, casing, gearbox with feed pipe, approx. 30 kw main drive motor, back drive. On 4 legs. Incl. (2) control panels, pump, piping, sensors, valves and additional infrastructure. Mounted on trailer. New year 1994. Trailer dimensions: L x W x H: 3500 mm Long x 2000 mm Width x 2140 mm high. Weight 3 tonnes. Our freight specialists can assist you with door to door transportation and all customs documents needed to make the process go as smoothly as possible.
MFR: Alfa Laval
Stock No.:
10151314Sharples/Alfa Laval Solid Bowl Decanter Centrifuge, Model DS-308 (PM38000)-Used-
Used- Sharples/Alfa Laval Solid Bowl Decanter Centrifuge, Model DS-308 (PM38000). Stainless Steel construction (product contact areas), maximum bowl speed 4000 rpm, single row of lined cake solids discharge ports, liquid plate dams, base, casing, feed pipe, gearbox, 40 hp drive motor, 15 HP VFD back drive, control panel (230-460 volts).
MFR: Sharples
Stock No.:
46431001Used Alfa Laval Aldec-404 Stainless Steel Solid Bowl Decanter Centrifuge
Used Alfa Laval Model Aldec-404 Solid Bowl Decanter Centrifuge With 316 Stainless Steel Product Contact Surfaces, 4,000 RPM Maximum Bowl Speed And 22 kW Main Drive. Industrial horizontal solid bowl decanter centrifuge designed for continuous solid-liquid separation, sludge dewatering, slurry clarification, solids concentration and recovery of suspended solids from compatible industrial process streams. Features 316 stainless steel product-contact construction with a maximum bowl operating speed of 4,000 RPM for centrifugal separation of suspended solids from liquid materials. Equipped with a 110 mm (4.33") single-lead internal screw conveyor with welded hardfacing for increased wear resistance during continuous solids transport and discharge. Includes a single row of lined cake discharge ports for removal of separated solids and moon-style liquid plate dams for controlling liquid discharge level and separation conditions. Fitted with a 2.5 kNm torque-rated gearbox with a 159:1 reduction ratio, a 22 kW (approximately 29.5 HP) main drive motor requiring 380 volts, 3-phase, 50 Hz electrical service, and a DC backdrive motor for controlling differential speed between the rotating bowl and internal screw conveyor. Includes supporting base, casing and feed pipe for product introduction into the centrifuge. Manufactured by Alfa Laval, Model Aldec-404. Possible applications include municipal and industrial wastewater treatment, biological sludge dewatering, chemical slurry separation, suspended solids recovery, industrial effluent clarification, food processing wastewater treatment, mineral slurry dewatering, pigment processing and concentration of other compatible solids-bearing liquid streams.
MFR: Alfa Laval
Stock No.:
47200002Used Alfa Laval AVNX-616B-31G Stainless Steel Solid Bowl Decanter Centrifuge
Used Alfa Laval Model AVNX-616B-31G Solid Bowl Decanter Centrifuge With 316 Stainless Steel Product Contact Surfaces, 3,250 RPM Maximum Bowl Speed And 11 kW Main Drive. Industrial horizontal solid bowl decanter centrifuge designed for continuous solid-liquid separation, slurry clarification, solids concentration and mechanical dewatering of compatible industrial process materials. Features 316 stainless steel product-contact construction with a maximum bowl operating speed of 3,250 RPM for centrifugal separation of suspended solids from liquid process streams. Equipped with a single-lead internal screw conveyor featuring welded hardfacing for improved wear resistance during continuous solids transport and discharge. Includes moon-style liquid plate dams for controlling liquid pond depth and discharge conditions to optimize separation performance. Features a casing equipped with a cake vibrator to assist with discharged solids handling, along with a feed pipe for introducing process materials into the centrifuge. Equipped with a 2.5 kNm torque-rated gearbox and an 11 kW (approximately 14.8 HP) main drive motor requiring 380 volts, 3-phase, 50 Hz electrical service. Includes supporting base and centrifuge casing. Manufactured by Alfa Laval, Model AVNX-616B-31G. Possible applications include industrial wastewater treatment, municipal sludge dewatering, biological sludge thickening, chemical slurry separation, industrial effluent clarification, food processing wastewater treatment, mineral slurry dewatering, pigment processing and recovery of suspended solids from other compatible industrial liquid streams.
MFR: Alfa Laval
Stock No.:
52211001Alfa Laval NX-314 Solid Bowl Decanter Centrifuge
Used- Alfa Laval NX-314 Solid Bowl Decanter Centrifuge. Max bowl speed 3250 rpm, 316 stainless steel (product contact areas), base, casing, feed pipe, gearbox, main drive motor, safety guards, vibration switch, mounted on four leg stand.
MFR: Alfa Laval
Stock No.:
52345021Used Alfa Laval AVNX-418 Solid Bowl Decanter Centrifuge – 3250 RPM, 40 HP Motor
Used- Alfa Laval AVNX-418 Solid Bowl Decanter Centrifuge, 316 Stainless Steel (product contact areas). Max bowl speed 3250 rpm. Single row of lined cake discharge ports, moon liquid plate dams. Base, bowl diameter approximately 13.8" diameter x 57.4" long. Driven by a 40hp, 3/60/230/460 volt, 1770 rpm motor. Has XP on/off panel. Includes bottom discharge hopper, stainless steel holding tank ( 22" diameter x 45" straight side), Seepex pump, feed pipe, carbon steel frame.
MFR: Alfa Laval
Stock No.:
13652025Used PIERALISI FP600RS 2-Phase Solid-Liquid Decanter Centrifuge – 4000 RPM, 11 kW
Used PIERALISI FP600RS 2-Phase Solid-Liquid Decanter Centrifuge. Centrifugal Force: G 3157 at 4000 RPM Motor Power: 11 kW Overall Dimensions: Drum Diameter: 353 mm (13.9") Drum Length: 1228 mm (48.3") Length-to-Diameter Ratio: 3.29 Total Weight: Approximately 1350 kg Hydraulic Capacity: 9000 l/h (9 m/h) Actual Throughput: Dependent on the required separation level, but indicative values are: 50 tons/day of tallow 10001200 kg/h of olives 6000 l/h of sludge Optional: Complete supply of 1 new electrical panel with PLC, Siemens touchscreen. Our freight specialists can assist you with door to door transportation and all customs documents needed to make the process go as smoothly as possible.
MFR: Pieralisi
Stock No.:
43388003Used Dorr-Oliver Merco 16L Stainless Steel Decanter Centrifuge – 30 HP
Used Dorr-Oliver / Merco Model 16L Stainless Steel Solid Bowl Decanter Centrifuge With 30 HP Main Drive, ECB Backdrive And 4,000 RPM Maximum Bowl Speed. Industrial horizontal solid bowl decanter centrifuge designed for continuous solid-liquid separation, slurry clarification, solids concentration and mechanical dewatering of compatible process materials. Features 316 stainless steel product-contact construction with a maximum bowl speed of 4,000 RPM for centrifugal separation of suspended solids from liquid process streams. Equipped with a 5" double-lead internal screw conveyor featuring welded hardfacing for increased wear resistance during solids transport and discharge. Includes auger-style solids discharge ports and plate dam liquid discharge for separating and removing solid and liquid phases. Driven by a 30 HP main drive motor with an ECB backdrive for controlling differential speed between the rotating bowl and internal screw conveyor. Includes supporting base, discharge chutes, bowl cover and belt guard. Manufactured by Dorr-Oliver / Merco, Model 16L. Possible applications include industrial wastewater treatment, municipal sludge dewatering, chemical slurry separation, liquid clarification, industrial sludge thickening, starch and food processing waste separation, mineral slurry dewatering, pigment processing and recovery of suspended solids from other compatible industrial liquid streams.
MFR: Dorr Oliver/Merco
Stock No.:
43388004Used Dorr-Oliver Merco 16L Stainless Steel Solid Bowl Decanter Centrifuge
Used Dorr-Oliver / Merco Model 16L Solid Bowl Decanter Centrifuge With 316 Stainless Steel Product Contact Surfaces, 30 HP Main Drive And ECB Backdrive. Industrial horizontal solid bowl decanter centrifuge designed for continuous solid-liquid separation, slurry clarification, solids concentration and mechanical dewatering of compatible industrial process materials. Features 316 stainless steel product-contact construction with a maximum bowl operating speed of 4,000 RPM for centrifugal separation of suspended solids from liquid streams. Equipped with a 5" double-lead internal screw conveyor featuring welded hardfacing for increased wear resistance during solids transport and discharge. Includes auger-style solids discharge and plate dam liquid discharge for separating and removing solid and liquid phases. Driven by a 30 HP main drive motor with an ECB backdrive for differential speed control between the rotating bowl and internal screw conveyor. Includes solid bowl assembly, supporting base, discharge chutes, bowl cover and belt guard. Manufactured by Dorr-Oliver / Merco, Model 16L. Possible applications include industrial wastewater treatment, municipal and industrial sludge dewatering, chemical slurry separation, liquid clarification, solids thickening, starch processing, food processing byproduct recovery, mineral slurry dewatering, pigment processing and recovery of suspended solids from other compatible industrial liquid streams.
MFR: Dorr Oliver/Merco
Stock No.:
43912001Used Dorr-Oliver 16L Stainless Steel Decanter Centrifuge – 4,000 RPM
Used Dorr-Oliver Model 16L 316 Stainless Steel Solid Bowl Decanter Centrifuge With 4,000 RPM Maximum Bowl Speed And Hardfaced Double-Lead Conveyor. Industrial horizontal solid bowl decanter centrifuge designed for continuous solid-liquid separation, slurry clarification, solids concentration and mechanical dewatering of compatible process materials. Features 316 stainless steel product-contact construction with a maximum bowl operating speed of 4,000 RPM for centrifugal separation of suspended solids from liquid streams. Equipped with a 5" double-lead internal screw conveyor featuring welded hardfacing for increased wear resistance during solids transport and discharge. Includes auger-style solids discharge ports for separated material removal and adjustable liquid plate dams for controlling liquid discharge conditions and separation performance. Features a stainless steel coffin-style casing, Cyclo gearbox, supporting base and main drive guard. Manufactured by Dorr-Oliver, Model 16L. Serial #CH34311SN10MC8. Possible applications include industrial wastewater treatment, sludge thickening and dewatering, chemical slurry separation, liquid clarification, mineral slurry processing, pigment and specialty chemical processing, starch separation, food processing waste treatment and recovery of suspended solids from other compatible industrial liquid streams.
MFR: Dorr Oliver
Stock No.:
47049001Used Alfa Laval / Sharples P-3000 Super-D-Canter Centrifuge – 4,000 RPM, 28.5 HP
Used- Alfa Laval / Sharples P-3000 Super-D-Canter Centrifuge. 316 Stainless Steel construction (product contact areas), maximum bowl speed 4000 rpm, 4" double lead conveyor with welded hardfacing, hogged-out cake discharge ports with cake flingers, liquid plate dams, base, casing, gearbox with torque arm assembly, feed pipe, vibration isolators. Bowl driven by 28.5hp (21.3 kW), 460/3/60 main drive motor.
MFR: Sharples
Decanter Centrifuge Applications & Typical Use Cases
Used decanter centrifuges are commonly used in applications requiring continuous solid-liquid separation. Typical use cases include:
Sludge thickening and dewatering in wastewater treatment
Separation of chemical slurries and industrial byproducts
Oil, fat, and grease separation in food processing
Biomass and fermentation separation in biotechnology
Clarification of process liquids in industrial operations
These machines are well-suited for handling high solids content and continuous processing environments.
When to Choose a Decanter Centrifuge
Decanter centrifuges are best suited for operations requiring continuous separation and automated solids discharge. They are typically selected over batch centrifuges when high throughput and minimal operator intervention are priorities. Processes involving slurries with significant solids content or requiring consistent, uninterrupted separation performance benefit from decanter centrifuge systems.
Used Decanter Centrifuge Buying Considerations
When evaluating a used decanter centrifuge, consider:
Bowl diameter and length: Affects separation efficiency and throughput capacity
Differential speed: Controls solids conveyance and separation performance
Torque rating and drive system: Important for handling heavy or abrasive materials
Solids handling capacity: Must align with feed concentration and production requirements
Wear components and maintenance history: Evaluate scroll condition, bearings, and rebuild records
Why Buy Used Decanter Centrifuges
Purchasing a used decanter centrifuge can significantly reduce capital costs while maintaining reliable separation performance. Many units are available for immediate shipment, helping facilities avoid long OEM lead times. Used equipment also provides access to proven, industrial-grade systems suitable for demanding applications.
Sell Your Used Decanter Centrifuges
Aaron Equipment purchases surplus and used decanter centrifuges from a wide range of manufacturers and configurations. Whether you are upgrading equipment, liquidating assets, or have idle inventory, our team can assist with buyouts or consignment opportunities.
A decanter centrifuge is a continuous separation machine that uses centrifugal force to separate solids from liquids. It features a rotating bowl and internal scroll conveyor that automatically removes solids, making it ideal for high-volume processing.
Decanter centrifuges are used for sludge dewatering, slurry separation, oil and fat clarification, and industrial wastewater processing. They are commonly used in chemical, food, and environmental applications requiring continuous separation.
Decanter centrifuges operate continuously and automatically discharge solids, while basket centrifuges typically run in batch cycles and require manual or semi-automated unloading. Decanters are preferred for high-throughput operations, while basket centrifuges are used for specific batch processes.
The cost of a used decanter centrifuge depends on factors such as size, manufacturer, capacity, condition, and configuration. Larger or specialized units typically command higher prices. Contact Aaron Equipment for current availability and pricing.
Yes. Aaron Equipment purchases used decanter centrifuges across multiple manufacturers and configurations. If you have equipment available for sale, submit your details to request an evaluation.