Project Scale:
A partial reuse salmon fingerling system with a culture volume of 740 m3.
Where:
Puerto Varas, Chile, South America
When:
The system was designed in 2001 and facility modifications were made in 2002.
Project Description:
The Salmones Llanquihue project was the first full-scale project in Chile to convert an existing hatchery to reuse technology.
Services Provided:
PR Aqua provided all design services, equipment procurement, and installation services for re-use systems. At project completion, PR Aqua provided system commissioning and training of operations personnel.
Project Features:
The design features two Partial Reuse Aquaculture Systems (PRAS) for start feeding and fry production. By treating and reusing 70% of the total flow, Salmones Llanquihue is able to minimize water use and simultaneously increase production.
The treatment systems include solids removal, gas balancing, pure oxygen addition, UV disinfection, heating and waste heat recovery. A comprehensive effluent collection and treatment system was also included in the design.
Challenges and Solutions:
Timeline was constrained on the project. From initial conceptual planning through to commissioning and training, the project was completed by PR Aqua in four months.
Instead of demolishing the existing concrete raceways, PR Aqua had the raceways backfilled and used them as a raised foundation for the new field of circular culture tanks. This helped to reduce construction costs while using existing infrastructure to establish the elevations required by the reuse treatment system.
Results:
The project was a great success, demonstrating the successful application of Partial Reuse Aquaculture Systems and blazing the way for advance Recirculating Aquaculture Systems (RAS) in Chile. |
