Hybrid flow-through

A hybrid flow-through system in aquaculture combines elements of both traditional flow-through and recirculating aquaculture systems (RAS). It is designed to optimise water usage, waste management, and energy efficiency by integrating the best features of each system.

In a traditional flow-through system, water flows continuously into fish tanks, then exits without being reused.

In a hybrid system, a portion of the water is treated and recirculated, while the rest is discharged after use, reducing the overall water demand compared to a fully open flow-through system.

Wastewater is partially treated in the hybrid system to remove solids and control ammonia levels, which are key challenges in aquaculture.

A hybrid system also conserves energy by reusing some of the water after treatment, similar to a recirculating system. However, it still allows for the periodic introduction of fresh water, which can reduce the need for intensive water treatment equipment.

By balancing recirculation with fresh water input, the hybrid system minimises the risk of disease spread and water contamination, while reducing water and energy usage compared to a traditional flow-through system.

In essence, a hybrid flow-through system seeks to improve water efficiency and waste control while maintaining a simpler, lower-cost setup than a full recirculating system.