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.:
41174077Used Alfa Laval DSNX 4850 Decanter Centrifuge. Stainless steel (product contact areas). Max bowl speed 3650 rpm, 2 phase separation (liquid/solids) design. Bowl dia: 480/263 mm (18.7/10.2), Bowl beach angle: 10°, 250 mm (10") pitch, conveyor flights are protected with around 200 tungsten carbide tiles, single row of 360 deg lined cake solids discharge ports, base, casing, gearbox 6 kNm, back drive 1:169 and Alfa Laval control panel with ABC controller. Previously used in a Medical WWT applicati
Used Alfa Laval DSNX 4850 Decanter Centrifuge for Sludge Dewatering | Medical & Industrial WWT. Stainless steel (product contact areas). Max bowl speed 3650 rpm, 2 phase separation (liquid/solids) design. Bowl dia: 480/263 mm (18.7/10.2), Bowl beach angle: 10, 250 mm (10") pitch, conveyor flights are protected with around 200 tungsten carbide tiles, single row of 360 deg lined cake solids discharge ports, base, casing, gearbox 6 kNm, back drive 1:169 and Alfa Laval control panel with ABC controller. Previously used in a Medical WWT application for sludge dewatering.
MFR: Alfa Laval
Stock No.:
41174079Used Alfa Laval NX 438B-31G Solid Bowl Decanter Centrifuge – 316 SS High-Speed Separation System
Used- Alfa Laval NX 438B-31G Solid Bowl Decanter Centrifuge. 316 Stainless Steel construction (product contact areas). Maximum bowl speed 3650 RPM. 360 deg single row of lined cake discharge ports with wear liners, liquid plate dams, base, stainless steel casing, gearbox, 55 kW (82.5 HP), 3/50/400-Volt main drive motor. 3.5 KN gearbox. Hydraulic back drive. Frame mounted on (4) legs. Control panel. Previously used in a fishmeal/oil application. Our Freight specialists can assist with any customs documentation to insure a smooth transition.
MFR: Alfa Laval
Stock No.:
41174085Used Alfa Laval NX-418 Solid Bowl Decanter Centrifuge – 316 Stainless Product Contacts, 4,000 RPM with Back Drive
Used Alfa Laval Model NX-418 Solid Bowl Decanter Centrifuge With 316 Stainless Steel Product Contact Surfaces And 4,000 RPM Maximum Bowl Speed. Industrial horizontal decanter centrifuge designed for continuous liquid/solid separation, clarification, dewatering and solids concentration of compatible process materials. Features a solid bowl rated for a maximum rotational speed of 4,000 RPM, with an internal scroll conveyor having approximately 110 mm spacing between flights for transporting separated solids toward the discharge section. Equipped with a double row of lined cake discharge ports for solids removal and moon-style liquid plate dams for controlling liquid discharge levels. Includes a reduction gearbox with back drive for differential speed control between the bowl and scroll assembly. Constructed with 316 stainless steel product contact surfaces and mounted on a structural frame with support legs. Possible applications include industrial wastewater treatment, sludge dewatering, solids recovery, chemical processing, food processing, fermentation byproduct separation, mineral processing and separation of other compatible liquid/solid mixtures.
MFR: Alfa Laval
Stock No.:
48744024Used Pieralisi Maior 3 Decanter Centrifuge
Pieralisi Maior 3 Decanter Centrifuge. Stainless Steel construction (product contact areas). Maximum bowl speed 4000 rpm, single row cake discharge ports, conveyor, casing, gearbox, Approx 22 HP 380/3/50 drive motor. On 4 legs. Reported rebuild. Previous used in an olive oil application. Used. 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.:
49670009GEA Westfalia CA 220-01-00 Decanter Centrifuge.
Used- GEA Westfalia CA 220-01-00 Decanter Centrifuge. Stainless steel construction (product contact areas), max bowl speed 5500 rpm, 2 phase separation (liquid/solids) design, single row of lined cake solids discharge ports, base, casing, gearbox. On 4 legs. Previously used in an olive oil application. 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: GEA Westfalia
Stock No.:
53228004Used Flottweg Z4D-3/409 Sedicanter® Decanter Centrifuge | 316 Stainless Steel | 7,750 RPM | 30 kW Main Drive
Used- Flottweg Model Z4D-3/409 Sedicanter Decanter Centrifuge. 316 stainless steel. Max bowl speed 7750 RPM, 30 KW (40.2hp) Main drive motor, 7.5 KW (10hp) back drive motor, gearbox, feed tube, lube system, vibration switch/isolators, guards, chutes and control panel. 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: Flottweg
Stock No.:
53459035Unused Alfa Laval Aldec 45 Solid Bowl Decanter Centrifuge – 316 Stainless Steel, 4,200 RPM, 55 kW Drive
Unused Alfa Laval Aldec 45 Solid Bowl Decanter Centrifuge 316 Stainless Steel, 4,200 RPM, 55 kW Drive. AISI 316 Stainless Steel construction (product contact areas). Maximum bowl speed 4200 RPM. 360 deg single row of lined cake discharge ports with Tungsten Carbide wear liners, liquid plate dams, base, stainless steel casing, approx. 55 kW (82.5 HP), 3/50/400-Volt main drive motor. 2.5 KN gearbox with back drive. Frame mounted on (4) legs. Control panel. Serial # 5250277. New 2021. Unused never used in production.
MFR: Alfa Laval
Stock No.:
53459036Unused Alfa Laval Aldec 45 Solid Bowl Decanter Centrifuge – AISI 316 Stainless Steel, 4,200 RPM, 55 kW Drive
Unused Alfa Laval Aldec 45 Solid Bowl Decanter Centrifuge AISI 316 Stainless Steel, 4,200 RPM, 55 kW Drive. AISI 316 Stainless Steel construction (product contact areas). Maximum bowl speed 4200 RPM. 360 deg single row of lined cake discharge ports with Tungsten Carbide wear liners, liquid plate dams, base, stainless steel casing, approx. 55 kW (82.5 HP), 3/50/400-Volt main drive motor. 2.5 KN gearbox with back drive. Frame mounted on (4) legs. Control panel. Serial # 5250278. New 2021. Unused never used in production!
MFR: Alfa Laval
Stock No.:
53779001Used Alfa Laval AVNX 930B-31G Decanter Centrifuge – 3250 RPM, 45 HP, Stainless Steel
Used- Alfa Laval AVNX 930B-31G Solid Bowl Decanter Centrifuge. Stainless steel on product contact parts. Maximum bowl speed 3250 rpm. Single lead conveyor with single row lined cake discharge ports with ware liners. Approximate 30 KW (45 hp) 3/50/380 Volt main drive motor, frame/casing. On 4 legs. Previously used in a Wastewater Treatment Application. 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.:
53779002Alfa Laval, Decanter Centrifuge. Model: AVNX 5050B-31G
Used- Alfa Laval AVNX 5050B-31G Solid Bowl Decanter Centrifuge. Stainless steel on product contact parts. Maximum bowl speed 2700 rpm. Single lead conveyor with single row lined cake discharge ports with ware liners. Approx 30 KW (45 hp) 3/50/380 Volt main drive motor, frame/casing. On 4 legs. Previously used in a Wastewater Treatment Application. 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.:
53779003Alfa Laval AVNX 5060B-31G Solid Bowl Decanter Centrifuge
Used- Alfa Laval AVNX 5060B-31G Solid Bowl Decanter Centrifuge. Stainless steel on product contact parts. Maximum bowl speed 2700 rpm. Single lead conveyor with single row lined cake discharge ports with ware liners. Approx. 30 KW (45 hp) 3/50/380 Volt main drive motor, frame/casing. On 4 legs. Previously used in a Wastewater Treatment Application. 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.:
53779004Used Alfa Laval DSNX 4555 Decanter Centrifuge – 316 Stainless Steel Solid Bowl System for Industrial Sludge Dewatering
Used- Alfa Laval DSNX 4555 Solid Bowl Decanter Centrifuge. 316 Stainless Steel construction (product contact areas). Maximum bowl speed 3250 rpm, 20 deg. bowl angle. Single row of lined cake discharges ports, single lead conveyor, moon liquid plate dams, base, casing, 6 KNM gearbox with feed pipe, 55 kw 380/3/50 440volt/3/60 ABB main drive motor. On 4 legs. Control panel. New 1998. Weight 2 tonnes. Overall dimensions: 129" (3936 mm) long x 36" (1090 mm) width x 41" (1270 mm) high (decanter only). Previously used in a WWT application. 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
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.