In News, Waste-to-Energy (WTE), Air drying systems, Dryclone®

There is an ever-increasing demand for renewable energy sources. Two readily available sources grow roughly in line with population growth and are under-used: biosolids (sewage sludge) and the organic fraction of solid waste streams. Until now, the high moisture content of these waste streams has prevented them from being economically viable renewable energy sources.

Municipal biosolids (sewage sludge)

The innovative Dryclone® system solves this problem by providing a simple, clean, reliable, and energy-efficient way to remove moisture from solid waste and sewage sludge and optimize them for energy recovery. Dryclone uses only air to convey, pulverize, and efficiently remove the moisture from organic wastes and sewage sludge in a cost-effective way. Dryclone’s aerodynamic pulverization means it can remove the moisture trapped inside the cells of organic materials, unlike conventional dryers.

Dryclone and biosolids (sewage sludge)

Dryclone provides an alternative to land application by making biosolids (sewage sludge) into a renewable energy source. Dryclone can dry biosolids from around 20% total solids (80% moisture content) to 85% or more total solids (15% or lower moisture content). The resulting pulverized and blended dried product is ideal for use in waste to energy processes like combustion or gasification. The dried product can also be blended with solid recovered fuel (SRF) for applications such as cement kilns.

C&I food waste

Even if local regulations don’t yet permit dried biosolids to be made into renewable fuel, Dryclone can reduce the weight of the biosolids by over 70% just by removing the water. This offers significant savings in haulage and disposal costs.

Dryclone and organic waste

The Dryclone aerodynamically pulverizes and dries wet organic waste including MRF and dirty MRF mixed residuals, black bag waste, green waste, and food waste, — almost everything that can’t be conventionally recycled. Dryclone can dry these materials from up to 80% moisture content down to 15% or lower moisture content. This optimizes the dry organic waste for energy recovery, typically in SRF.

Post-Dryclone organic material improves the quality of SRF because the dried organic materials typically have higher energy content and lower ash content than the fibre component of mixed residual waste, making the SRF more valuable.

SRF including organics

Other benefits can include higher gate fees from being able to accept organic waste, no costly separation of organic waste from existing waste streams, and the ability to achieve over 95% diversion from landfill.

Contact us to learn more about how Dryclone can increase the profitability of your renewable waste to energy projects.

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