Date of Graduation

2004

Document Type

Thesis

Degree Type

MS

Committee Chair

Roger C., Jr. Viadero

Abstract

Typically, solids removal in flow-through aquaculture systems consists of movement of solids to a quiescent settling chamber from which they are removed after settling. Commonly used solids removal processes are time and labor intensive and generally inefficient. Due to expected increases in federal effluent discharge regulations, development of efficient quiescent zones is essential to future growth of the aquaculture industry. However, before alternate designs were considered, hydrodynamic properties of traditional systems needed studied to adequately establish baseline characteristics. Characterization was achieved using an Acoustic Doppler Velocimeter (ADV), which measured velocity in three dimensions. Solids settling properties were characterized using specific gravity, density, particle size analysis, and observed settling velocities. Values from this study were compared with literature values to determine similarity between studied raceways and typical raceways. Based on advantages and disadvantages of current removal systems and the hydrodynamic and settling properties of the raceways, alternate quiescent zone designs were presented.

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