From organic wet waste into carbon capture and storage

Evac HTC process

The Evac Hydrothermal Carbonization (HTC) process for wet organic waste handling provides a safer, more sustainable way to deal with organic waste streams, such as food waste and bio sludge, without emissions or plastic waste to the sea or gas emissions into the atmosphere.

Solution is available for cruise vessels of all sizes and helps our customers to reduce their fleet´s environmental footprint and meet the MARPOL Annex IV and V regulations.

EVAC HTC process can also be used in land-based solutions, where organic side streams are generated.

How HTC process works?

In the process, organic material with high water content is exposed to increased temperature. The heat launches a chemical process, where the feeding material breaks down into carbon molecules. The resulting carbon and water mixture can be easily dried, leaving solid material called hydrochar.

In cruise ships, the reject water from the process can be treated using existing advanced wastewater treatment system.

The fully automated process can be operated onboard continuously, even in port, as it is not considered incineration and produces no flue gases. 

Hydrochar, a carbon capture and storage

The output of the process, hydrochar, is stable and sterile. It is easy to store onboard, and can be landed at any port, since it is not classified as food waste. The HTC process can reduce the volume of wet organic waste as much as 90%. With a high carbon content, hydrochar acts as a carbon capture and storage.

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