20.500.12556/RUL-111383 Tehnologija reje rib v akvaponskih sistemih Fish farming in aquaponic systems Akvaponika je proizvodni sistem, ki združuje akvakulturo s hidroponsko pridelavo zelenjave. Sistem deluje tako, da amonijak, ki ga ribe izločajo iz telesa in je zanje strupen, nitrifikacijske bakterije v biofiltru pretvorijo v nitrit in naprej v nitrat. Z nitrati bogata voda dospe do koreninskega sistema rastlin, kjer nitrati služijo rastlinam kot hranilo. Na ta način rastline vodo očistijo in očiščena voda vstopa nazaj v bazen za ribe. Za rast rastlin in življenje rib je potreben kisik, ki ga v vodo potiska zračna črpalka. Ključne komponente akvaponske enote so bazen z ribami, mehanski in biološki filter, enota za rast rastlin ter vodna/zračna črpalka. Centralni medij v akvaponiki je voda, ki mora za uspevanje rib, rastlin in nitrifikacijskih bakterij imeti ustrezno temperaturo, pH, količino raztopljenega kisika, trdoto ter sprejemljivo skupno količino dušikovih spojin. Najprimernejše vrste rib za rejo v akvaponskih sistemih v vročem podnebju so tilapija, krap in som, saj rastejo dokaj hitro in uspevajo v vodi slabše kakovosti z manjšo količino raztopljenega kisika. Postrv dobro raste v hladni vodi vendar zahteva kakovostnejšo vodo. Učinkovito delujoč akvaponski sistem je v ravnotežju. Prisotnost bolezni, pomanjkanje hranil in pogini kažejo na to, da ni v ravnotežju. Aquaponics is a production system that combines aquaculture with hydroponic vegetable production. The system works in a way that ammonia, which is eliminated from the body of the fish and is toxic to them, is converted by nitrifying bacteria in the biofilter into nitrite and further into nitrate. Nitrate-rich water reaches the root system of the plants, where it serves the plants as a nutrient. In this way, the plants purify the water and the purified water enters the fish tank. The growth of plants and the life of fish requires oxygen, which is pumped into the water by an air pump. The key components of the aquaponics unit are fish tank, mechanical and biological filter, plant growing unit and water/air pump. The central medium in aquaponics is water, which must have an adequate temperature, pH, amount of dissolved oxygen, hardness and acceptable amount of total nitrogen compounds in order for fish, plants and nitrifying bacteria to thrive. Tilapia, carp and catfish are the most suitable fish for aquaponic systems in hot climates, as they grow fairly quickly and thrive in poor quality waters with low concentrations of dissolved oxygen. Trout grow well in cold water but require better water quality. An effective aquaponic system is in balance. The presence of diseases, nutrient deficiencies and deaths indicate that it is out of balance. ribogojstvo ribe akvaponika fish farming fish aquaponics true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-09-29 07:45:04 2019-09-29 07:45:11 2022-08-23 03:42:41 0000-00-00 00:00:00 2019 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 171518 4302216 8374.pdf 8374.pdf 1 3901E365AA7D2E9F48BDD8B14A3057FD d7642b08cc94c0e27245197870dd8953e0b4f13804b3dd63d88e5344d39bb607 5f6bb0f8-a1b7-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=123222 Biotehniška fakulteta 0 0 0