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Lecturer(s)
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Stejskal Vlastimil, doc. Ing. Ph.D.
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Course content
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Aim of the subject is to provide students with information about using of recirculating aquaculture systems (RAS). Main topics of lectures are as followed: 1. The effect of intensive fish culture on the water environment (production of metabolites, health, sanitary and biologic risks). 2. The water sources for recirculating systems and their charcteristics (groundwater, surface water, rain water). 3. The culture facilities (tanks) - the shape, depth, material, size, hydraulics, specifics related to the species and size of reared fish. 4. The methods for removing of suspended solids (sedimentation, centrifugal separators, drum and other mechanical filter, etc.). 5. The biological filtration and their capacity, features, advantages and disadvantages (trickling and submerged and fluid filters, activated sludge, rotating disc filters, membrane filtration). 6. The dissolved and fine solids removing using skimmers (flotation), principles and methods of denitrification, degassing of water (removing of CO2 and N2), separation, processing and use of sludge (including biogas). 7. The aeration and oxygenation of water (high-pressure vessels, blowers, compressors, oxygen generators, oxygenating towers, diffusers, "U" tube). 8. The disinfection of water using ozone and UV radiation. 9. The transport and accumulation of water. 10. The processes in the RAS in the start of use and during operating; the pH control; the light mode; the heating of water (electric power, natural gas, biogas, waste cooling water from industry and energy, geothermal and solar energy, heat pumps); the measurements, regulation, management, operational automation and alarm systems in intensive aquaculture. 11. The base principles of fish culture in RAS (stocking of fish, feeding, protection for stress, diseases, prevention of ammonia and nitrite poisoning). 12. The new topics in intensive aquaculture (Danish RAS, hydroponic systems, use of seaweed and shellfish to clean the water). 13. The specifics of intensive culture of important fish groups (salmonids, sturgeons, cyprinids, percids, catfish, eels and marine fish species) in the RAS.
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Learning activities and teaching methods
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Monologic (reading, lecture, briefing), Dialogic (discussion, interview, brainstorming), Demonstration, Excursion
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Learning outcomes
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The aim of this subject is detailed study of principles and proceses in intensive fish culture based on recirculating aquaculture systems. The subject included also the technical and construction solution each part of recirculating system.
After completing of the course, students will have the knowledge needed to perform technical and fish culture activities related to construction and operation of a recirculating system for intensive fish farming.
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Prerequisites
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Active participation in seminars, writing of seminar work, successful pass the credit test and an oral exam.
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Assessment methods and criteria
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Oral examination, Test, Seminar work, Development of laboratory protocols
Active participation in seminars, writing of seminar work, successful pass the credit test and an oral exam.
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Recommended literature
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Buřič, M., Kouřil, J. Technologie chovu lososovitých ryb v recirkulačním systému dánského typu.. Vodňany, 2011.
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Kouřil a kol. Chov lososovitých ryb, lipana, a síhů. VÚRH Vodňany, 2008.
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Kouřil, J., Stejskal, V., Hamáčková, J. Recirkulační akvakulturní systémy. Edice Metodik (Technologická řada). VÚRH Vodňany, 2008.
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Kouřil, J. Využití recirkulačních systémů s biologickým čištěním vody k intenzivnímu chovu ryb (krátký přehled). Bulletin VÚRH Vodňany, 2006.
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Shepherd, J., Bromage, N. Intensive fish farming. Blackwell Science, 1996.
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Timmons, M., T., Losordo, T., M. Aquaculture water reuse systems: Engineering and management. Amsterdam, Holandsko, 1994.
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Timmons, M.B., Ebeling, J.M., Wheaton, F.W., Summerfelt, S.T., Vinci, B.I. Recirculating aquaculture systems. 2nd Edition. NCRA Publication No. 01-002. , Ithaca, NY, USA, 2002.
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