Rowdy Creek RAS System

Integrated-Aqua supplied key life support equipment for a two-tank Recirculating Aquaculture System (RAS) at Rowdy Creek, designed for the production of Chinook salmon and steelhead. The system supports stable, high-reliability operation across mechanical filtration, biological treatment, disinfection, gas management, and temperature control, with each component selected to maintain consistent water quality and operational redundancy throughout the production cycle.

Mechanical filtration is handled by a high-capacity drum filter system operating at approximately 480 GPM, utilizing automated backwash functionality and 50-micron screens to ensure consistent solids removal and reduced loading on downstream treatment processes. Biological treatment is provided by a moving bed biofilter system, incorporating aeration manifolds, structured media containment, and biomedia to support stable nitrification performance under continuous flow conditions.

A gas management tower rated for up to 690 GPM provides efficient CO₂ and nitrogen stripping, combined with low head oxygenation (LHO) to optimize dissolved oxygen levels before gravity-fed return to the culture tanks. Water is further treated through a high-output UV sterilization system rated at 480 GPM, delivering an 110 mJ/cm² UV dose at 80% UVT, and featuring automated wiper cleaning, lamp dimming, and PLC-based monitoring for consistent pathogen control performance.

Temperature regulation is maintained by a 12.5-ton hydromarine chiller system with titanium heat exchanger, designed for precise seasonal temperature control with integrated flow protection and alarm monitoring. System reliability is reinforced through a pump control cabinet managing three 3HP pumps, featuring automatic redundancy logic, thermal overload protection, and alarmed failover to ensure continuous system operation.

This project highlights Integrated-Aqua’s ability to supply and specify critical RAS infrastructure components that work together to support high-density salmonid production. By integrating properly sized mechanical, biological, disinfection, and thermal systems, the Rowdy Creek installation demonstrates a robust and efficient approach to modern land-based aquaculture operations.