Titre du document / Document title

Influence of water salinity on the SOTR of paddlewheel and propeller-aspirator-pump aerators, its relation to the number of aerators per hectare and electricity costs

Auteur(s) / Author(s)

VINATEA Luis ⁽¹⁾ ; CARVALHO José W. ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Laboratório de Camarôes Marinhos, Departamento de Aqüicultura, CCA, Universidade Federal de Santa Catarina, 88.040-900, Flonanópolis, SC, BRESIL

Résumé / Abstract

The objective of this study was to determine the standard oxygen transfer rate (SOTR) (kg O₂/h) of 2-HP (1.49 kW) paddlewheel (PW) and propeller-aspirator-pump (PAP) aerators submitted to salinities of 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55 and 60‰. Tests were carried out in round 50m³ tanks. SOTR of paddlewheel and propeller-aspirator-pump aerators was maximum (3.79 ± 0.30 and 3.62 ± 0.04 kg O₂/h, respectively) at salinity 30%o. Above 30%o, efficiency of aerators was slightly reduced. These results suggest that it is possible to calculate the number of aerators according to the salinity of the culture ponds and, consequently, predict electricity costs.

Revue / Journal Title

Aquacultural engineering   ISSN 0144-8609   CODEN AQEND6 

Source / Source

2007, vol. 37, n^o2, pp. 73-78 [6 page(s) (article)] (1/4 p.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Amsterdam, ROYAUME-UNI  (1982) (Revue)

Mots-clés anglais / English Keywords

Water ; Environmental engineering ; Aquaculture ; Dissolved oxygen ; Costs ; Aerator ; Aspirator ; Salinity ;

Mots-clés français / French Keywords

Eau ; Ingénierie environnement ; Aquiculture ; Oxygène dissous ; Coût ; Aérateur ; Aspirateur ; Salinité ;

Mots-clés espagnols / Spanish Keywords

Agua ; Ingeniería ambiental ; Acuacultura ; Oxígeno disuelto ; Coste ; Ventilador ; Aspirador ; Salinidad ;

Mots-clés d'auteur / Author Keywords

SOTR ; Dissolved oxygen ; Salinity ; Aerators ;

Localisation / Location

INIST-CNRS, Cote INIST : 20268, 35400016142557.0010