Inorganic nitrogen control in a novel zero-water exchanged aquaculture system integrated with airlift-submerged fibrous nitrifying biofilters |
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| Authors: | Thanathon Sesuk Sorawit Powtongsook Kasidit Nootong |
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| Institution: | 1. Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;2. Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok 10330, Thailand;3. Center of Excellence for Marine Biotechnology, Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand;4. National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani 12120, Thailand;1. Wageningen University, Wageningen Institute of Animal Sciences, Aquaculture and Fisheries Group, P.O. Box 338, 6700 AH Wageningen, The Netherlands;2. IMARES Wageningen UR, Institute for Marine Resources and Ecosystem Studies, Department of Aquaculture, P.O. Box 77, 4400 AB Yerseke, The Netherlands;1. Fisheries Research Station of Baden-Württemberg, Argenweg 50/1, 88085 Langenargen, Germany;2. Limnological Institute, University of Constance, 78457 Konstanz, Germany;1. Laboratório de Camarões Marinhos (LCM), Departamento de Aquicultura, Universidade Federal de Santa Catarina, Rua dos Coroas 503, CEP 88061-600, Barra da Lagoa, Florianópolis, Santa Catarina, Brazil;2. Laboratório de Sanidade de Organismos Aquáticos (AQUOS), Departamento de Aquicultura, Universidade Federal de Santa Catarina, Rod. Admar Gonzaga, 1346, CEP 88040-900, Itacorubi, Florianópolis, Santa Catarina, Brazil;3. Environment and Sustainability Institute (ESI), College of Life and Environmental Sciences, University of Exeter, Penryn, Cornwall, United Kingdom;4. Instituto Federal Catarinense, Campus de Araquari, Rod. BR 280, km 27, CEP 89245-000 Araquari, Santa Catarina, Brazil |
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| Abstract: | This work examined the feasibility of applying shrimp diets to establish nitrification on submerged fibrous biofilters. It also investigated the performance of a proposed zero-water exchanged aquaculture system, which integrated growing of aquatic stocks and operation of acclimated biofilters in the same environment. Addition of shrimp diets fully established nitrification within 3 weeks as indicated by continuous increase of nitrate and trivial levels of ammonium and nitrite. A series of batch experiment revealed an average ammonium degradation rate of 24.1 mg N m?2 day?1. Zero-water discharged tilapia cultivation could be carried out in the proposed aquaculture system for at least 44 days when daily inorganic loadings increased from 1.24 to 10.78 mg N l?1 day?1. The corresponding daily growth rates of tilapia from the proposed aquaculture systems integrated with acclimated biofilters varied from 3.01 to 3.35 g day?1, which was approximately 7–16% better than numbers from the systems using non-acclimated biofilters. |
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