A complete range of decanters for sludge dewatering and wastewater treatment

Alfa Laval offers a complete range of decanter centrifuges for wastewater treatment, sludge thickening and dewatering. Regardless of your demands or challenges, we have the right machine for you.

10 χρήσιμες συμβουλές για τη μείωση του κόστους συντήρησης εγκαταστάσεων λυμάτων

Dewatering centrifuges innovating the wastewater industry

Established in Australia since 1926, Alfa Laval helps reduce the environmental footprint from water and waste streams and turn waste to value. When partnering with Alfa Laval, you have full access to our application experts who can advise you on how to optimize your operations. With a local network of service centres, field service engineers, and authorized service providers in Australia, Alfa Laval has your parts and service needs covered.

Alfa Laval has been leading the wastewater decanter market for decades. With a strong focus on operational reliability, separation performance and high customer value, we continue to innovate the business.





Alfa Laval ALDEC decanters bring high separation efficiency, reliable operation and low operating costs to all types of water and wastewater treatment plants. ALDEC is Alfa Laval’s medium range of decanters for wastewater treatment, comprised of a wide variety of sizes. Low power and polymer consumption in combination with easy service makes ALDEC very attractive in terms of total cost of ownership.

ALDEC is available with capacities from 3 to 125 m3/h.


Decanter for wastewater - benefits

  • High separation performance
  • Low power consumption
  • Highly reliable operation
  • Upgradable to G3 or G3 VecFlow™
  • Replaceable wear protection tiles
  • PowerTubes
  • Easy to service


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The Alfa Laval ALDEC G3 features the same technology as ALDEC G3 VecFlow™, except for the feed zone. ALDEC G3 has a standard feed zone, giving it somewhat lower performance and higher power consumption. It is a good fit for a wide range of applications where high separation performance and low power consumption are required, but where the extra benefits offered by VecFlow™ are not necessary. An Alfa Laval ALDEC G3 can be upgraded to the VecFlow™ design.

ALDEC G3 is available with capacities from 23 to 225 m3/h.


Decanter for wastewater - benefits

  • Ideal for demanding sludges with high solids loading
  • High separation performance, 1% drier solids compared to standard decanters
  • Low power consumption
  • Upgradeable to G3 VecFlow™ PowerTubes, Slimline conveyor and Direct Drive gearbox
  • Replaceable wear protection tiles
  • Advanced control system Easy to service
  • Available in many materials, including Duplex

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ALDEC G3 VecFlow™

ALDEC G3 VecFlow_640x360.png

Alfa Laval ALDEC G3 VecFlow™ is a state-of-the-art decanter for dewatering and thickening applications. It offers an ideal solution for duties where maximum separation performance, lowest possible power consumption, very high capacity and advanced control possibilities are required. ALDEC G3 VecFlow™ features the most advanced technology available on the market, including our unique VecFlow™ feed zone and Slimline conveyor.

ALDEC G3 VecFlow™ is available with capacities from 23 to 230 m3/h.


Decanter for wastewater - benefits

  • Highest performance at the lowest operating cost
  • Extremely effective separation, 2% drier solids compared to standard decanters
  • Lowest power consumption, 30% lower than standard decanters
  • Lowest total cost of ownership
  • Upgradeable
  • PowerTubes, Slimline conveyor, Direct Drive gearbox and VecFlow™ feed zone
  • Replaceable wear protection tiles
  • Advanced control system
  • Easy to service
  • Available in many materials, including Duplex


  • Larger footprint than i-DW

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Features ALDEC ALDEC G3 ALDEC G3 VecFlow™
PowerTubes Optional X X
Wear protection coating on conveyor      
Wear protection tiles on conveyor X X X
Wear protected inlet   X X
Slimline Design   X X
Direct Drive gearbox   X X
VecFlow™     X



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Extend your decanter’s lifetime value with Alfa Laval Service

Alfa Laval’s comprehensive service offering can assist you in your decanter centrifuge optimization as your operations develop and change over time. As part of the service offering you find both decanter centrifuge optimisation, troubleshooting and training, and more. Ensure outstanding performance from your Alfa Laval decanter and minimal total cost of ownership.

Decanter service 640x360

Alfa Laval ALDRUM G3 sets a new standard for sludge thickening

Difficult sludges that traditionally require liquid polymer to flocculate and thicken can be treated using a cheaper powder polymer – reducing your operating costs. Discover how the Alfa Laval ALDRUM G3 sets new standards for rotary drum filters

ALDRUM G3 Drum thickener

Support for Engineering & Construction Contractors

If your business provides engineering, procurement and construction (EPC) services, you know there are never enough hours in the day. There’s always another critical decision demanding your time and attention. So, when selecting decanters or rotary drum filters for a project, let us support you.

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