Aquaculture Biofilters: A Natural Water Quality Control Method
Abstract
Aquaculture biofilters are a natural and sustainable solution for maintaining water quality in fish farming operations. These systems use beneficial bacteria to convert harmful nitrogenous waste compounds, such as ammonia and nitrite, into less toxic forms, such as nitrate. This process occurs within a filter bed filled with various media, such as gravel or plastic beads, which provide a surface area for the growth of the bacteria. The biofilter also serves as a habitat for other microorganisms, such as protozoa and fungi, which further enhance the breakdown of waste compounds. The use of biofilters in aquaculture has several benefits, including reducing the need for water changes, improving fish health and growth, and reducing environmental pollution. However, designing and managing a biofilter system requires careful consideration of several factors, such as the stocking density of fish, the type of feed used, and the type of biofilter media. In this article, we review the principles of aquaculture biofilters and discuss their potential for sustainable and efficient water quality management in fish farming operations.References
Ruiz P, Vidal JM, Sepúlveda D, Torres C, Villouta G, Carrasco C, Aguilera F, Ruiz‐Tagle N,
Urrutia H. Overview and future perspectives of nitrifying bacteria on biofilters for recirculating
aquaculture systems. Reviews in Aquaculture. 2020; 12 (3): 1478–94.
Hargreaves JA. Photosynthetic suspended-growth systems in aquaculture. Aquacultural
engineering. 2006; 34 (3): 344–63.
Ni Z, Wu X, Li L, Lv Z, Zhang Z, Hao A, Iseri Y, Kuba T, Zhang X, Wu WM, Li C. Pollution
control and in situ bioremediation for lake aquaculture using an ecological dam. Journal of cleaner
production. 2018; 172: 2256–65.
Pulkkinen JT, Kiuru T, Aalto SL, Koskela J, Vielma J. Startup and effects of relative water renewal
rate on water quality and growth of rainbow trout (Oncorhynchus mykiss) in a unique RAS research
platform. Aquacultural engineering. 2018; 82: 38–45.
Pumkaew M, Taweephitakthai T, Satanwat P, Yocawibun P, Chumtong P, Pungrasmi W,
Powtongsook S. Use of ozone for Vibrio parahaemolyticus inactivation alongside nitrification
biofilter treatment in shrimp-rearing recirculating aquaculture system. Journal of Water Process
Engineering. 2021; 44: 102396.
Chen S, Ling J, Blancheton JP. Nitrification kinetics of biofilm as affected by water quality factors.
Aquacultural engineering. 2006;34(3):179-97.
Crab R, Defoirdt T, Bossier P, Verstraete W. Biofloc technology in aquaculture: beneficial effects
and future challenges. Aquaculture. 2012; 356: 351–6.
Zhu S, Shen J, Ruan Y, Guo X, Ye Z, Deng Y, Shi M. The effects of different seeding ratios on
nitrification performance and biofilm formation in marine recirculating aquaculture system
biofilter. Environmental Science and Pollution Research. 2016; 23: 14540–8.
Avnimelech Y. Bio-filters: the need for an new comprehensive approach. Aquacultural engineering.
; 34 (3): 172–8.
Gutierrez-Wing MT, Malone RF. Biological filters in aquaculture: trends and research directions
for freshwater and marine applications. Aquacultural engineering. 2006; 34( 3): 163–71.
Jones AB, Preston NP, Dennison WC. The efficiency and condition of oysters and macroalgae used
as biological filters of shrimp pond effluent. Aquaculture research. 2002; 33 (1): 1–9
