News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.

oxygenation

Health & Welfare

La correcta circulación del agua en los estanques, Parte 2

El promover la circulación del agua durante el día es una estrategia eficaz para enriquecer el agua del estanque con el oxígeno producido por la fotosíntesis, y puede reducir significativamente los costos de aireación suplementaria en la noche. Muchos tipos 

Health & Welfare

Proper water circulation in aquaculture ponds, Part 2

Promoting water circulation during the day time is an effective strategy to enrich pond water with oxygen produced by photosynthesis, and can significantly reduce the costs of night time supplemental aeration. Many types of effective, commercial water circulators are available. 

Health & Welfare

Proper water circulation in aquaculture ponds critical

Many aquaculture ponds require mechanical aeration both for increasing dissolved oxygen levels and to promote mixing of oxygen-rich and oxygen-depleted waters, which also helps prevent turnover. Promoting water circulation during the day time is an effective strategy to enrich pond 

Responsibility

Efficiency of mechanical aeration

Although relatively expensive, mechanical aeration increases production. Asian-style paddlewheel aerators are widely used but are inefficient. Testing has led to more efficient designs that are now widely used in U.S. catfish and shrimp ponds. 

Responsibility

A look at unit processes in RAS systems

The ability to maintain adequate oxygen levels can be a limiting factor in carrying capacities for RAS. The amount of oxygen required is largely dictated by the feed rate and length of time waste solids remain within the systems.