Line of action:

Status:

Execution date:

General:

Development of a new system for inerting fish viscera in situ for safe dumping using the residual thermal energy produced by the ships’ engines.

Specific:

1. To know the problems associated with anisakis and other parasites, the limitations of the solutions currently available and the target fleet.

2. Design and build the prototype for the inerting of fish parasites by taking advantage of the waste heat from the vessels.

3. Select the solution that best meets the technical and economic needs of the fleet for the inerting of fish parasites by taking advantage of the waste heat from the vessels.

4. To transfer the technical and organisational knowledge acquired in the project to the fishing sector.

1 Analysis of current needs, characteristics of the waste to be treated according to fishery

2 Analysis of the characteristics of the vessels of the interested fleet for the design of the waste inerting equipment

3 Benchmarking of solutions currently used for similar applications

4 Prototype design

5 Detailed engineering and prototype construction

6 Commissioning of the proposed system and testing at laboratory level

7 Physical-chemical and microbiological characterization (Parasites) of viscera samples from ships studied before and after heat treatment in pilot device for system validation

8 Organize and participate in communication and dissemination activities of the project

In the first phase of the project, it was determined that the waters most affected by anisakis are those of Gran Sol and the trawlers and longliners that fish in these waters were defined as target fleets. The technical specifications of the representative target ship on which the design of the solution was oriented were the following:

• The main engine load percentage for a 952 hp (700 KW) boat is 80%.
• The outlet temperature of the gases is at 360-365 °C
• The inlet temperature of the viscera is usually around 10 °C. It has to reach at least 60 °C in the center for a couple of minutes to kill the anisakis larva.
• 100 kg per day of viscera (10-20 kg/h).

Currently, to close the parasite cycle there are methods such as Heat by resistances, Heat by microwaves, Nano cavitation and Crushing and ozonation. In this case, using CFD techniques, preliminary drawings and simulation data were obtained for the operation of the prototype, an indirect heat recovery system. Based on the simulations carried out, it is concluded that this system is the ideal one for the construction of the prototype, since it maximizes its heat recovery and efficiency.