Disk Stack Centrifuges for Clarification of Industrial Waste Water Containing Heavy Metals


Disk Stack Centrifuges for Clarification of Industrial Waste Water Containing Heavy Metals


Industrial waste water containing heavy metals is a major concern for many industries. These heavy metals, such as mercury, lead, cadmium, and chromium, are toxic and can have detrimental effects on the environment and human health. Proper treatment and clarification of such waste water is imperative to ensure compliance with environmental regulations and prevent any potential harm. In this article, we will explore the use of disk stack centrifuges as an effective solution for the clarification of industrial waste water containing heavy metals.

1. The Importance of Clarifying Industrial Waste Water:

Industrial waste water often contains a variety of contaminants, including heavy metals, organic compounds, and other pollutants. If not treated properly, these contaminants can pollute water bodies, affect aquatic life, and eventually find their way into the food chain. Proper clarification of industrial waste water is crucial to remove these harmful substances and prevent any further damage to the environment.

2. Understanding Disk Stack Centrifuges:

Disk stack centrifuges are high-speed mechanical devices that use centrifugal force to separate substances of different densities. They consist of a stack of conical disks which are rotated rapidly, creating a powerful centrifugal field. The heavy metal-containing waste water is fed into the centrifuge, and the centrifugal force causes the heavier solids to migrate towards the periphery, while the clarified liquid moves towards the center.

3. Separation Mechanism:

The separation mechanism of disk stack centrifuges is based on the principle of sedimentation and centrifugation. The heavy metals present in the waste water have a higher density and tend to settle towards the outer edge of the rotating disks due to centrifugal force. Concurrently, the clarified liquid, with a lower density, moves towards the center and is collected for further treatment or discharge.

4. Efficiency and Performance:

Disk stack centrifuges are known for their high efficiency and performance in the clarification of industrial waste water. The high rotational speeds generate a powerful centrifugal force, allowing for efficient separation of heavy metals from the liquid phase. Additionally, the design of the conical disks in the centrifuge maximizes the surface area for contact between the waste water and the separation medium, further enhancing the clarifying capacity.

5. Enhanced Heavy Metal Removal:

Disk stack centrifuges can be further optimized for the removal of heavy metals by incorporating various chemical agents into the process. Coagulants, flocculants, and polymers can be added to the waste water prior to centrifugation to aid in the agglomeration and precipitation of heavy metal particles. This enhances the separation efficiency of the centrifuge and ensures a higher degree of heavy metal removal from the waste water.

6. Operational Flexibility:

Disk stack centrifuges offer operational flexibility, allowing for adjustments in rotational speed, feed rate, and other parameters to optimize the clarification process. The speed of the centrifuge can be adjusted to accommodate varying concentrations of heavy metals in the waste water. Additionally, the feed rate can be controlled to maintain an optimum flow and residence time within the centrifuge for efficient separation of heavy metals.

7. Maintenance and Safety Considerations:

Proper maintenance and safety protocols are essential to ensure the reliable and safe operation of disk stack centrifuges. Regular inspection and cleaning of the centrifuge components are necessary to prevent the build-up of solids and optimize performance. Adequate safety measures, such as emergency stop controls and protective enclosures, should be implemented to minimize the risk of accidents and ensure the well-being of operators.


The clarification of industrial waste water containing heavy metals is of utmost importance for environmental protection and human health. Disk stack centrifuges offer an effective and efficient solution for the removal of heavy metals, ensuring compliance with regulatory standards and minimizing the adverse impacts of industrial wastewater discharge. By understanding the principles and benefits of disk stack centrifuges, industries can adopt this technology to responsibly manage their waste water and contribute to a cleaner and safer environment.


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