Zasnova pretočne in recirkulacijske ribogojnice za salmonidne ribe

diplomska naloga

Suzana Pavlič (Author), Boris Kompare (Mentor), Dušan Žagar (Thesis defence commission member), Mojca Šraj (Thesis defence commission member), Jože Panjan (Co-mentor), Aleksandra Krivograd-Klemenčič (Co-mentor)

Abstract

Možnost izkoriščanja stalnega in kakovostnega vodnega vira omogoča gradnjo ribogojnice, ki temelji na pretočnem ali recirkulacijskem akvakulturnem sistemu (RAS). Trend slovenskega ribogojstva temelji na pretočnih ribogojnicah, vendar je v zadnjem času zaslediti vse večje zanimanje za RAS. Pretočni sistemi so finančno ugodnejši v primerjavi z RAS, vendar slednji omogočajo bistveno večjo proizvodnjo rib ob enaki količini vode kot pretočne ribogojnice. Prednosti se kažejo tudi v manjšem vplivu na okolje, boljšem nadzoru kakovosti vode (kisik, CO2, pH, nitriti itd.), ki jo v pretočni ribogojnici težko nadzorujemo. Dimenzioniranje ribogojnice vključuje znanja različnih področij, poudarek je predvsem na poznavanju vzrejnih pogojev rib in prehranjevalnih strategijah ter tehnologijah čiščenja voda. Predstavljeni sta zasnovi dveh ribogojnic za salmonide: pretočne in recirkulacijske. Za prvi model ribogojnice s pretočnim sistemom so ugotovljene maksimalne vzrejne kapacitete postrvi in kakovost izpustne vode. V drugem pa je predstavljena zasnova RAS, kjer je potrebno za želeno kapaciteto postrvi dimenzionirati recirkulacijski sistem, preveriti kakovost procesne in izpustne vode ter zasnovati sistem čiščenja vode za ponovno uporabo v vzrejnih bazenih oziroma za izpust vode nazaj v vodotok.

Keywords

gradbeništvo;diplomska naloga;UNI;VKI;ribogojnice;vzreja postrvi;pretočni sistemi;recirkulacijski akvakulturni sistemi;čiščenje odpadne vode;

Data

Language:	Slovenian
Year of publishing:	2014
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	S. Pavlič
UDC:	626.88:639.3(497.4)(043.2)
COBISS:	6612065
Views:	3242
Downloads:	1003
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	ǂThe ǂdesign of a flow through and recirculation fish farms for salmonid fish
Secondary abstract:	The availability of high quality water source enables construction of a fish farm based on a flow through or recirculating aquaculture systems (RAS). The trend in Slovenia is to use flow through systems; however, recently an increase in use of RAS was noticed. Financially speaking flow through systems are cheaper than RAS, but on the other hand RAS enables higher production at the same quantity of used water. Further advantages of RAS can be observed in better and easier monitoring of the water parameters such as oxygen, CO2, pH levels and the level of nitrates etc. as well as in lesser negative environmental impact. The dimensions of fish farm are results of a study complexity of the system which is based on several conditions where the water treatment technology, fish breeding conditions and feeding strategy are the most important. The diploma task presents the design of flow through and recirculation fish farm for salmonid fish. The first model with flow through system is identified maximum capacity of fish breeding and quality of discharge water. The second model uses RAS. In this case the quality of process and outlet water has to be checked for certain breeding capacity in order to establish what water treatment system should be designed in order to enable water to be reused as many times as possible and for the water that does not meet the quality criteria to be released back to nature.
Secondary keywords:	graduation thesis;civil engineering;fish farms;trout breeding;flow through systems;recirculating aquaculture systems;wastewater treatment;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	XII, 78 str., 10 pril.
Type (ePrints):	thesis
ID:	8327213