ALDEC
Alfa Laval ALDEC decanter centrifuges are designed for the sludge thickening and dewatering process in municipal and industrial wastewater treatment plants, with a focus on cost-efficiency, reliability, easy operation and sustainability.
Sludge decanter centrifuge design provides a series of concrete benefits
- Reduces sludge volume during the sludge thickening and dewatering process, which cuts down on transport and disposal costs
- High capacity at small footprint: Compact, modular design saves space
- High performance combined with low energy consumption
- Wear-resistant design with anti-blocking feature
- Complete, fully enclosed cleaning-in-place (CIP)
The extensive range of ALDEC centrifuges for sludge thickening and dewatering are capable of handling a wide range of flow rates. They are designed to be efficient, simple to install, easy to maintain and straightforward to operate. Installation, operating and service life costs are minimal.
Less water, lower cost
Decanter centrifuges are crucial for removing the water content of sludge from municipal water (residuals) and of wastewater (biosolids) plants, as well as from industrial waste streams. The drier the sludge, the less space it takes up and the less it weighs – both resulting in big savings on transport and disposal costs, while also helping to meet sustainability and environmental goals.
Low energy consumption and labor costs
With ALDEC decanter centrifuges, you benefit from low energy consumption and infrequent maintenance costs, keeping sludge thickening and dewatering expenses to a minimum. They are also fully automatic, so you need less labor to operate a centrifuge verses other dewatering technologies.
How does sludge thickening and dewatering work?
Separation takes place in a horizontal cylindrical bowl equipped with a screw conveyor. The feed enters the bowl through a stationary inlet tube and is accelerated smoothly by an inlet distributor. The centrifugal force that results from the rotation then causes sedimentation of the solids on the wall of the bowl. The conveyor rotates in the same direction as the bowl, but slightly slower, thus moving the solids towards the conical end of the bowl. The cake leaves the bowl through the solids discharge openings into the casing.
Separation takes place throughout the entire length of the cylindrical part of the bowl, and the clarified liquid leaves the bowl by flowing over adjustable plate dams into the casing. The conveyor rotates in the same direction as the bowl, but slightly slower, thus moving the solids towards the conical end of the bowl. The cake leaves the bowl through the solids discharge openings into the casing. Separation takes place throughout the entire length of the cylindrical part of the bowl, and the clarified liquid leaves the bowl by flowing over adjustable plate dams into the casing.
For further details, please visit view our product brochure.
Performance audit for Decanter Centrifuges
Get decanter centrifuge optimization and cost-savings throughout the sludge thickening and dewatering process with Alfa Laval Performance Audit as our global service and support experts help make the most out of your equipment.
Minimize operating cost with Alfa Laval IoT Services
Alfa Laval’s IoT Services is a range of digital services aiming to reduce operating costs and maximize operating reliability in wastewater plants.
Aldec G3
ALDEC decanter centrifuges are available with capacities ranging from 2 to 95 m3/h. For higher capacity and more advanced requirement, Aldec G3 is your ideal solution.
Case story
Reducing biosolids disposal costs with a decanter centrifuge
A southern California dairy plant reached their cost savings and sustainability goals after selecting a decanter centrifuge and maintenance monitoring plan from Alfa Laval.
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