Water Quality of Recirculating Aquaculture Systems
A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water, Agriculture and Aquaculture".
Deadline for manuscript submissions: closed (15 February 2023) | Viewed by 2233
Special Issue Editor
Special Issue Information
Dear Colleagues,
Recirculating aquaculture systems (RAS) are increasingly used for commercial fish production. Good water quality is crucial for successful production since it affects the fish growth and health.
One challenge in RAS is the tendency toward the formation of off-flavor-inducing compounds which easily accumulate in fish flesh. These compounds typically induce musty and earthy flavors which consumers find unacceptable. This can affect producers´ reputation and considerably increase production costs. This is connected with the source of inlet water and the rate of water reuse. There can be unwanted compounds even in the inlet water, and in the case of surface water, the quality can vary due based on the time of year.
Effective particle removal is highly important in RAS. Solid particles increase oxygen consumption, nutrient input, and can serve as a place of growth for biofilms and microbes that produce off-flavors. Additionally, they can harbor pathogens and damage gills, creating unwanted effects on fish health. Furthermore, biofilters transform toxic nitrogen species into less toxic forms but can also act as hotspots for microbes that potentially produce off-flavor compounds.
Water quality and off-flavors have been studied in recent decades and many options have been tested for their removal. However, depuration still remains the only reliable method. Many of the issues related to water quality have still not been fully resolved. This issue aims to collect the most recent findings and technical solutions for improving the overall water quality in RAS.
Dr. Petra Lindholm-Lehto
Guest Editor
Manuscript Submission Information
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Keywords
- fish growth
- inlet water
- measurements
- off-flavors
- ozonation
- particle removal
- recirculating aquaculture systems (RAS)
- water quality in RAS
