Industrial Decanter Centrifuges for Dewatering of Sludge from Municipal Waste Water Treatment Plants


Industrial Decanter Centrifuges for Dewatering


Municipal Waste Water Treatment Plants play a crucial role in maintaining the health and well-being of our communities. However, one of the challenges these plants face is effective sludge dewatering. With the help of advanced technology, industrial decanter centrifuges have emerged as a reliable solution for dewatering sludge efficiently. In this article, we will explore the working principle and benefits of employing these centrifuges in municipal waste water treatment plants.

Understanding Sludge Dewatering

1. The Importance of Sludge Dewatering

Sludge dewatering is a critical step in waste water treatment plants, as it significantly reduces the volume and weight of the remaining sludge. By removing excess water from the sludge, it becomes easier and more cost-effective to transport and dispose of. Moreover, dewatering the sludge in an efficient manner also ensures the recovery of valuable resources, such as phosphorus and organic matter, which can be utilized in various industrial applications.

2. Challenges of Sludge Dewatering

Dewatering sludge is not without its challenges. The high water content in sludge makes it difficult to process efficiently. Traditional methods such as drying beds or belt filters, while still in use, often fall short in achieving the desired level of dewatering. These methods require large areas of land, are time-consuming, and can result in odor issues. Therefore, there is a growing need for efficient and reliable solutions that can tackle these challenges effectively.

Industrial Decanter Centrifuges: A Game-Changing Solution

3. Introduction to Industrial Decanter Centrifuges

Industrial decanter centrifuges are designed to efficiently separate the solid and liquid phases of sludge through the principle of sedimentation. This separation occurs under the influence of centrifugal force, which is generated by rotating the centrifuge bowl at high speeds. The heavy solid particles settle to the bowl's wall, while the clarified liquid is discharged through an outlet.

4. Working Principle of Decanter Centrifuges

Decanter centrifuges consist of a rotating bowl, a screw conveyor, and a drive system. The sludge enters the bowl through a feed tube and is subjected to high levels of centrifugal force. As the sludge rotates inside the bowl, the screw conveyor continuously transports the settled solids towards the discharge end. Simultaneously, the clarified liquid overflows and is collected separately. This continuous process ensures efficient dewatering of sludge and high-quality separation.

Benefits of Industrial Decanter Centrifuges

5. Enhanced Dewatering Efficiency

Decanter centrifuges enable efficient dewatering, resulting in reduced sludge volume and increased dryness. The continuous operation and high rotational speeds allow for quick separation of liquid and solid phases, minimizing the amount of water present in the sludge. The dewatered sludge can then be easily handled and treated further.

6. Reduced Operational Costs

Industrial decanter centrifuges offer significant cost savings compared to traditional dewatering methods. The automated operation reduces the need for manual labor, while the efficient dewatering process reduces disposal and transportation costs associated with bulky, high-moisture sludge. The recovered resources from the sludge can also generate additional revenue streams.

7. Improved Environmental Performance

By efficiently dewatering the sludge, industrial decanter centrifuges contribute to improving the overall environmental performance of waste water treatment plants. The reduced volume of sludge decreases the load on disposal facilities and minimizes the environmental impact associated with sludge transportation. Additionally, the recovered resources can be utilized in various industries, reducing the need for virgin materials and promoting sustainable practices.


Industrial decanter centrifuges have revolutionized the dewatering process in municipal waste water treatment plants. With their efficient separation capabilities, these centrifuges offer enhanced dewatering efficiency, reduced operational costs, and improved environmental performance. By adopting this advanced technology, waste water treatment plants can overcome the challenges of sludge dewatering effectively, leading to cleaner and more sustainable communities.


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