DLT Low-Temperature Sludge Dryer - Focused on the USA

Centrisys engineers, consultants, and industry experts researched current low-temperature dryers. The goal was to identify critical areas for improvement. As a result, we have successfully engineered a simplified and operator-friendly dryer that creates operational efficiencies and maximizes uptime, all within a compact footprint. Made in the USA and meets Build America, Buy America (BABA) requirements.

Centrisys DLT Low Temperature Belt Dryer

The DLT is a simple, closed-loop dryer using hot water as its heat source. The low-profile design integrates modular heat exchangers into the dryer system. The DLT can be engineered using a dedicated hot water boiler for natural gas or biogas. Waste heat from pyrolysis or CHP cooling water can be used to offset energy requirements.

Drivers for Low-Temperature Sludge Dryers

• Generate Class A Biosolids - dry sludge at a temperature to destroy pathogens
• Reduce sludge volume
• Reduce costs for disposal, landfill, and transportation
• PFAS regulations, minimize risk by reducing volume

Product

• Dried sludge with a dryness level greater than 90% solids
• Reduced biosolids weight up to +80%
• Meets Class A requirements
• Optimized particle size creates minimal dust; allows for land application without further processing

More Uptime. Less Maintenance. Fewer Truckloads.

Problem: Typical low-temp dryer designs have heat recovery systems that are:

• Large
• Stand-alone
• A single point of failure
• Located outside the dryer system

During cleaning, the entire dryer must stop operation to complete this maintenance task.

Solution: The DLT is engineered with a set of heat recovery exchangers on each module. If one of the heat exchangers needs cleaning or maintenance, it can be conveniently isolated, removed, and substituted with a spare. The DLTs modular design creates maintenance and operational efficiencies.