Case Study: Optimizing Sediment Dredging Efficiency in East River

The Challenge
This project faced two common hurdles: variable flow rates; and no lay-down area for traditional dewatering methods. Our customer turned to the experts at UMPS to deliver a sediment dredging solution that could handle these challenges and ensure efficient processing of the material.

The Solution
UMPS advised the following: the SmartFeed™* system that provides chemical conditioning at real-time dredging rates and Geotube®** containers laid down in barges, a space saving option that eliminated the need for a dedicated lay-down area.

This combined approach offered several advantages:

• Adaptability: the system functions effectively on barges, making it ideal for confined spaces.
• Efficiency: real-time chemical conditioning by SmartFeed™ ensured optimal dewatering, minimizing processing time and maximizing project efficiency.
• Cost-effectiveness: consistent dewatering performance reduces the volume of material for disposal, leading to cost savings on transportation and landfill fees.

The Results
UMPS’ sediment dredging solution delivered exceptional results. The effluent met the standards for direct canal discharge, and the process achieved a 67% capture rate for dry solids, significantly reducing the overall volume of material for disposal.

The Geotube® containers were adapted to operate completely on barges in the East River, adjacent to the site. Geotube® units were custom-sized to fit the barges and two layers of Geotube® units were stacked in each barge.

The patent-pending SmartFeed™ system provided automated polymer mixing, injection, and real-time performance data for the project.

Solids and flow were constantly changing, from 4% to 11% solids, and from 400 gpm to 1,500 gpm. The SmartFeed™ system tracked changes in solids and flow, adjusting polymer injection to optimum level every five seconds.

Effluent was clean enough for direct discharge without additional treatment. Silt volume was reduced from an estimated 52 barges (non- dewatered) to less than 1 barge of dewatered solids. The project was so successful that the same sediment dredging method was used for another facility upriver and approved for future applications.

In 45 days, 67% dry solids were achieved. Solids were removed from the barge and hauled to an EPA approved landfill in NJ.

Leverage Our Sediment Dredging Expertise

Our team of experienced engineers and specialists will work closely with you to develop a customized sediment dredging plan that addresses challenges like variable flow rates and space constraints. From navigating permitting processes to selecting the most effective dewatering solution for your specific needs, our expertise will help you achieve efficient, cost-effective, and environmentally responsible sediment removal. Contact our team today and let’s discuss your sediment dredging project requirements.

*SmartFeed™ is a patent-pending technology of Mineral Processing Services, LLC.
**Geotube® is a registered trademark of TenCate™ and is used with permission.