Alfa Laval ALDEC decanter centrifuges are designed for the sludge thickening and dewatering process in municipal and industrial water and wastewater treatment plants, with a focus on cost-efficiency, reliability, easy operation and sustainability.
Decanter centrifuge design provides a series of concrete benefits
- Reduces sludge volume, 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 360 degree solids discharge feature
- Complete, fully enclosed cleaning-in-place (CIP)
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 it works
ALDEC decanter centrifuges separate the liquid components from a stream of feed solids 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 the feed zone. 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 wastewater 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 and thickening, with optimum performance.
For further details, please visit view our product brochure.
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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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Solutions for the Circular Economy
More and more wastewater treatment plants are discovering the benefits of a circular, holistic approach to wastewater treatment. Cost savings, reduced environmental impact and new income streams from recovered resources are but a few. Every wastewater treatment plant is unique and has its own set of challenges and opportunities. With our expertise in processing and our broad range of products, we can support your shift to a circular resource flow. Regardless of whether you are a contractor, designer or plant operator we can help you find the optimum solution for your specific project.
ALDEC decanter centrifuges are available with capacities ranging from 10 to 1000 GPM. For higher capacities and more advanced features, and where energy savings is a key criteria for your water or wastewater treatment process, Aldec G3 is your ideal solution.
With industry-leading wastewater technology and expertise based on the experience from thousands of installations, we can help analyze your unique situation and select the optimal equipment model, configuration and services for your needs and budget. Get in touch by reaching out directly to the local contact for your area or submitting a general inquiry on the contact form.
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Submit your process information to receive an estimated price range for this application. (Please note that this will be a budget estimate only. A firm quotation will require more detailed process parameters.)