Design and development of a portable and streamlined nutrient film technique (NFT) aquaponic system |
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| Institution: | 1. North Carolina State University, Department of Biological and Agricultural Engineering, Raleigh, NC, United States;2. North Carolina State University, Department of Civil, Construction, and Environmental Engineering, Raleigh, NC, United States;1. Electronics and Communications Engineering Department, Gokongwei College of Engineering, De La Salle University - Laguna Campus, LTI Spine Road, Laguna Blvd, Biñan, Laguna, Philippines;2. Electronics Engineering Department, Malayan Colleges Laguna, Pulo Diezmo Road, Cabuyao City, 4025, Laguna, Philippines;1. Department of Biological and Environmental Science, University of Jyväskylä, P.O. Box 35, 40014Jyväskylä, Finland;2. Natural Resources Institute Finland (LUKE), Survontie 9A, 40500Jyväskylä, Finland;1. Area of Agro-Forestry Engineering, Universidad de Sevilla, ETSIA, Ctra. Utrera km.1, 41013, Seville, Spain;2. Departamento de Ciencias Agroforestales, Universidad de Sevilla. ETSIA, Ctra. Utrera km.1, 41013, Seville, Spain |
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| Abstract: | One pilot-scale portable Nutrient Film Technique (NFT) aquaponic system has been designed, developed, and tested at ICAR-CIFA, Bhubaneswar for a period of 90 days (October to December 2018) to study the efficiency of the new design. The experimental setup has three separate units, each consisting of four major components, such as Fibreglass Reinforced Plastic (FRP) round fish culture tank (ø2.15 × 0.9 m) with operational capacity 2800 L, biofilter unit made up of Polypropylene (PP) of 100 L capacity, FRP rectangular hydroponics tank (4 × 0.9 × 0.35 m) having 2.64 m2 plantation area and High-density Polyethylene (HDPE) sump (ø0.6 × 0.7 m) of 200 L capacity. Implementation of custom designed and calibrated automatic water recirculation system gives an average flow rate of 94.7 L/h for continuous flow of nutrients from fish culture tank to hydroponics tank. The designed system harnesses gravity flow in 75 % of the cycle. For performance assessment, the system was initially stocked with 54 numbers of fish fry/m3 (153.7 g/m3) of pangas (Pangasius hypophthalmus) in culture tank and 27 marigold (Tagetes erecta) plants/m2 in hydroponics tank. Length and weight gain of fish were by 77.04 % and 397.2 % from initial, respectively, and marigold plant harvested 107 number of flowers/m2. The Total Ammoniacal Nitrogen (TAN) reduction in biofilter was found to be 61.97 %. |
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| Keywords: | Recirculation Fish rearing FRP Biofilter Marigold |
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