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Design and function of a nitrogen and sediment removal system in a recirculating aquaculture system optimized for aquaponics
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Document Title
Design and function of a nitrogen and sediment removal system in a recirculating aquaculture system optimized for aquaponics
Author
Supajaruwong S., Satanwat P., Pungrasmi W., Powtongsook S.
Name from Authors Collection
Affiliations
Department of Environmental Engineering, Chulalongkorn University, Bangkok, 10330, Thailand; Center of Excellence for Marine Biotechnology, Department of Marine Science, Chulalongkorn University, Bangkok, 10330, Thailand; National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand; Biotechnology for Wastewater Engineering Research Group, Chulalongkorn University, Bangkok, 10330, Thailand; Research Network of NANOTEC–CU on Environment, Department of Environmental Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
Type
Article
Source Title
Environmental Engineering Research
ISSN
12261025
Year
2021
Volume
26
Issue
2
Open Access
All Open Access, Bronze
Publisher
Korean Society of Environmental Engineers
DOI
10.4491/eer.2019.494
Format
Abstract
Aquaponic systems (APSs) are based upon the sustainable utilization of nitrogen and phosphorus from a recirculating aquaculture system (RAS) as the nutrient source for plant production. Since the proper management of nitrogen and suspended solids are important for nutrient utilization efficiency, their optimization was evaluated. The RAS integrated with filtration unit and nitrifying biofilter provided complete nitrification without solid accumulation. Under the optimal treatment condition for 16 d, the treated water was low in ammonia (0 mg-N/L) and high in nitrate (> 6 mg-N/L) concentrations, which was appropriate for use in the cultivation of lettuce (Lactuca sativa). The RAS was then incorporated with hydroponics at a 5:1 fish: plant weight ratio. Moreover, the simplified APS was compared with a typical APS system that incorporated filtration unit and nitrifying biofilter. The natural growth of nitrifying microorganisms in the simplified APS could perform complete nitrification after 20 d of operation giving low ammonia and nitrite concentrations. The nutrient removal efficiency of the simplified APS resembled the typical system. During the aquaponics, the hydroponic unit in the aquaculture system was sufficient to control the nutrient concentrations within the appropriate levels for fish cultivation, i.e. nitrate (< 20 mg-N/L) and phosphate (< 3 mg-P/L). © 2021 Korean Society of Environmental Engineers.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
Funding Sponsor
Office of the Higher Education Commission; Science and Technology Postgraduate Education and Research Development Office, Office of the Higher Education Commission; Chulalongkorn University; National Science and Technology Development Agency; National Nanotechnology Center; Ministry of Higher Education, Science, Research and Innovation, Thailand
License
N/A
Rights
N/A
Publication Source
Scopus