ESMIL Replaces Centrifuge with its largest series Multi-Disc Screw Press at the City of Bryan WWTP

Esmil Multi-Disc Screw Press MDQ-503(2)C Bryan Ohio

Introduction: The City of Bryan, Ohio, has long struggled with issues related to its wastewater treatment processes’ reliability and maintenance costs. These challenges were largely due to the inefficiencies of the centrifuge equipment previously used at their wastewater treatment plant (WWTP). In a move to enhance efficiency and reduce costs, the City decided to replace the old centrifuge with Esmil’s state-of-the-art Multi-Disk Screw Press, model MDQ-503(2)C.

Problem: The centrifuge equipment at the City of Bryan WWTP had been a major bottleneck, with frequent downtime and high maintenance costs impacting overall operational efficiency. The process required extensive space and was less effective in handling the volume and treatment needs of the city.

Solution: The MDQ-503(2)C installation marks a significant upgrade over the old system. This new equipment fits within the existing infrastructure but occupies substantially less space, which allows for easier access and maintenance. The Multi-Disc Screw Press is renowned for its reliability, cost-efficiency, and ease of operation, making it an ideal solution for the City of Bryan’s needs.

Esmil Multi-Disc Screw Press MDQ-503(2)C Bryan Ohio

Leadership in the Market: The ESMIL Multi-Disk Press 500-series, including the MDQ-503(2)C, represents the largest capacity range available in the market for this type of equipment. This distinction underscores ESMIL’s leadership in the industry and commitment to delivering high-performance solutions for complex wastewater treatment challenges.

Performance Outcomes:

  • Capacity: The screw press supports a capacity of 55 gpm at 3.6% and  900 LbDS/h, efficiently handling the city’s wastewater treatment demands.
  • Cake Dryness: Maintains the same cake dryness level as the centrifuge at XX%, ensuring consistency in the output quality.
  • Innovative Feature: A notable feature of the MDQ-503(2)C is its modular design, which includes two operational dewatering drums. This setup not only provides robust performance but also offers the flexibility to enhance capacity. The system is designed to allow for the easy addition of a third plug-and-play drum, which can increase the processing capacity by 33.3%. This scalability is a significant advantage, providing the WWTP with the ability to respond to future increases in demand without major equipment overhauls.

Impact on Operations:

The implementation of the MDQ-503(2)C has not only stabilized the dewatering process of anaerobically digested sludge but has also enhanced the overall efficiency of subsequent steps. Post-dewatering, the sludge is routed through a dryer and subsequently repurposed for agricultural use, contributing to sustainable local agriculture.

Esmil Multi-Disc Screw Press MDQ-503(2)C Bryan Ohio

Benefits: The primary benefits observed since the installation of the Esmil Multi-Disc Screw Press include:

  • Increased Reliability: The MDQ-503(2)C has demonstrated high reliability with minimal downtime.
  • Reduced Maintenance Costs: The new system requires less frequent maintenance and energy consumption, resulting in lower operating costs.
  • Enhanced Operational Efficiency: With its compact design and improved performance metrics, the screw press has markedly enhanced the overall efficiency of the wastewater treatment process.


Esmil’s MDQ-503(2)C Multi-Disk Screw Press has provided the City of Bryan’s WWTP with a robust solution that meets their need for a reliable, cost-effective, and efficient dewatering process. This case study exemplifies how advanced engineering solutions like Esmil can transform municipal wastewater management, leading to significant operational improvements and cost savings.

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