ALDEC

Alfa Laval Aldec centrifuges are designed for the sludge thickening and dewatering process in municipal and industrial wastewater treatment plants, as well as potable water works, solid waste plants, and biogas plants. Our decanter centrifuges focus on cost-efficiency, reliability, easy operation, and sustainability.

Experience the benefits of Aldec for sludge thickening and dewatering

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 decanter centrifuges for sludge thickening and dewatering is capable of handling a wide range of flow rates. Designed to efficiently treat sludge in wastewater, they are simple to install, easy to maintain, and straightforward to operate. With minimal installation, operating, and service life costs, Aldec centrifuges provide a reliable solution for sludge thickening.

Sludge thickening and dewatering - Less water, lower cost

Cost-effective sludge thickening centrifuges are crucial for removing the water content from sludge in wastewater, 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 helping to meet environmental requirements.

Low energy consumption and labour costs

When using Aldec decanter centrifuges in your sludge thickening and dewatering process, you benefit from low energy consumption and minimal maintenance costs, keeping dewatering expenses to a minimum. These centrifuges are also fully automatic, reducing labour costs while ensuring efficient processing of sludge in wastewater.

The features that make the difference

With more than 60 years of experience in solid-liquid separation, Alfa Laval knows everything needed to meet your challenges in sludge thickening and dewatering. Packed with features unique to Alfa Laval, Aldec centrifuges deliver reliable and high-performance solutions for treating sludge in wastewater.

FlightGuard

Robust wear protection for conveyor flights

FlightGuard wear protection consists of tiles welded to the conveyor of your decanter centrifuge, providing robust wear resistance and prolonged uptime in highly abrasive applications.

SolidsProtect

Flow-optimized solids outlet with wear protection

The innovative 360° outlet design ensures an even discharge of solids and minimal resistance. The outlet can handle high flow rates without blockages. SolidsProtect outlets feature replaceable wear saddles that maximize reliability and uptime of your decanter centrifuge.

FeedProtect

Feed zone with replaceable wear protection

The uniquely designed FeedProtect feed zone ensures gentle product acceleration and minimal turbulence, resulting in low abrasion and power consumption. The FeedProtect design is equipped with replaceable wear-protection liners, ensuring high uptime of your decanter centrifuge.

EasyLift

Spring loaded cover, that simplifies servicing

The patented spring-loaded hinged design makes it easy to open even the heaviest cover by hand. This also helps ensure quick, safe access for maintenance and service of your decanter centrifuge.

DeepPond

High separation performance and energy efficiency

Increasing the pond depth inside the bowl creates a larger volume, leading to longer retention time and improved separation performance. The DeepPond design delivers high solids dryness and clean centrate from your decanter centrifuge, even at high flow rates.

Aldec decanter centrifuges separate the liquid components from a stream of sludge in a rotating horizontal cylinder (the bowl) fitted with a screw conveyor inside. The feed enters the bowl through a stationary inlet tube and is accelerated smoothly by an inlet rotor. This gives rise to a centrifugal force that makes the separated-out solids collect on the wall of the bowl.

The conveyor and the bowl rotate in the same direction, but at different speeds. This has the effect of moving the solids towards the conical end of the bowl, where they can be removed. The liquid components in the sludge leave the bowl by flowing over adjustable plate dams into the casing.

This technology – in which Alfa Laval is the world leader – results in exceptionally effective dewatering, with the driest possible cake.

Sludge thickening and dewatering case stories

Contact us anywhere, anytime

At Alfa Laval, we recognise the importance of efficient sludge thickening and dewatering in maintaining reliable operations. With innovative solutions, expert support and a dedicated Global Service Network, we’re here to help you maximise uptime, optimise performance and achieve a stronger return on investment.