Performance study of annular settler with gratings in circular aquaculture tank using computational fluid dynamics |
| |
| Affiliation: | 1. Instituto Interamericano de Tecnología y Ciencias del Agua, Universidad Autónoma del Estado de México, Carretera Toluca-Atlacomulco km 14.5, Toluca, Estado de México, 50200, Mexico;2. Facultad de Ingeniería, Universidad Autónoma del Estado de México, Ciudad Universitaria, Toluca, Estado de México, 50130, Mexico;1. ADS Environmental Services Sdn. Bhd., Lot 1-1 (Mc No.2), Likas, 88400, Kota Kinabalu, Sabah, Malaysia;2. Department of Physics and Physical Oceanography Memorial University of Newfoundland, St. John''s, NL, A1B 3X7, Canada;3. Northwest Atlantic Fisheries Centre, 80 East White Hills, St John''s, Newfoundland and Labrador, A1C 5X1, Canada;1. Schoolof Civil Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia;2. Schoolof Civil Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia;3. School of Engineering and Built Environment, Griffith University, Gold Coast, Queensland 4222, Australia;1. Instituto Agronômico de Pernambuco – IPA, Departamento de Assistência Técnica e Extensão Rural – DEAT, Av. General San Martin, 1371, Bongi, Recife, PE, 50761-000, Brazil;2. Laboratório de Produção de Camarão – LPC, Centro de Ciências Agrárias/Universidade Estadual do Maranhão – UEMA, Cidade Universitária Campus Paulo VI, s/n, Jardim São Cristovão, São Luís, MA, 65055-310, Brazil;3. Programa de Pós-Graduação em Recursos Pesqueiros e Aquicultura, Universidade Federal Rural de Pernambuco – UFRPE, Recife, PE, 52171-900, Brazil;4. Centro de Aquicultura da Universidade Estadual Paulista – UNESP, Jaboticabal, SP, 14884-900, Brazil;5. Laboratório de Sistemas de Produção Aquícola, Departamento de Pesca e Aquicultura, UFRPE, Av. Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, PE, 52171-900, Brazil;1. Cetaqua, Centro Tecnológico del Agua, Los Pozos, 7340, Santiago, Chile;2. Salmones Blumar S.A., Puerto Montt, Chile |
| |
| Abstract: | The use of recirculating aquaculture systems (RAS) permits the production of fish with a small amount of water and they are an alternative to the scarcity and pollution of water resources. The implementation of an annular settler made by concentric cylinder in an RAS tank allowed the optimal growth conditions of the fish and improves the removal of solids naturally with the presence of low water velocities in the sedimentation zone. The hydrodynamic analysis conducted in this study using computational fluid dynamics allowed the evaluation of different parameters for the geometric design of the settler and its effect on the velocity flow fields that directly affect the particle sedimentation process. Through the evaluation of different geometric configurations of the settler, the use of gratings in the perimeter of the settler with maximum height hr = 1/6h, width and separation of 0.5hr, for tank diameter (D) to water depth (h) ratios (D/h) less than 6 was established. These conditions produced velocities between 15−25 cm/s into the cultivation zone, optimal for fish growth. In addition, with the perimetral gratings, velocities less than 2 cm/s are generated inside the settler, situation that benefits the settling of particles and self-cleaning of the tank. |
| |
| Keywords: | Aquaculture RAS CFD Solids removal Annular settler |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
