Production Optimisation of a Land-Based Trout Farm and the Reduction of its Environmental Effects

Articles > Article · 2016

Authors: Yusuf Güner, Volkan Kızak, Hülya EMİNÇE SAYGI, Gamze TURAN, Hatice TEKOĞUL, Ulviye KARACALAR, Fatih GÜLEÇ, Müge Aliye HEKİMOĞLU

EKOLOJI, Journal Indexed in SCI Expanded, International, WoS, 2016, vol 25, pp 41-51

DOI: 10.5053/ekoloji.2015.29

Summary

<p><span style="background-color: rgb(255, 255, 255); color: rgb(33, 37, 41);">In&nbsp;this&nbsp;study,&nbsp;certain&nbsp;water&nbsp;quality&nbsp;parameters&nbsp;(water&nbsp;temperature,&nbsp;dissolved&nbsp;oxygen&nbsp;(DO),&nbsp;pH,&nbsp;total&nbsp;inorganic&nbsp;nitrogen&nbsp;(TIN),&nbsp;phosphate&nbsp;(PO4),&nbsp;nitrite&nbsp;(NO2),&nbsp;nitrate&nbsp;(NO3),&nbsp;ammonium&nbsp;(NH4),&nbsp;and&nbsp;(BOD5)&nbsp;in&nbsp;the&nbsp;effluents&nbsp;and&nbsp;the&nbsp;efficiency&nbsp;of&nbsp;the&nbsp;treatment&nbsp;systems&nbsp;for&nbsp;eliminating&nbsp;wastes&nbsp;at&nbsp;a&nbsp;commercial&nbsp;trout&nbsp;farm&nbsp;with&nbsp;a&nbsp;capacity&nbsp;of&nbsp;10&nbsp;tons/year&nbsp;in&nbsp;Izmir&nbsp;(Kemalpasa)&nbsp;were&nbsp;examined.&nbsp;The&nbsp;DO,&nbsp;temperature,&nbsp;pH,&nbsp;TIN,&nbsp;PO4,&nbsp;NO2,&nbsp;NO3,&nbsp;and&nbsp;BOD5&nbsp;measured,&nbsp;were&nbsp;different&nbsp;in&nbsp;the&nbsp;outlet&nbsp;waters&nbsp;when&nbsp;compared&nbsp;with&nbsp;the&nbsp;inlet&nbsp;waters&nbsp;(p&lt;0.05).&nbsp;The&nbsp;settling&nbsp;basin&nbsp;did&nbsp;not&nbsp;reduce&nbsp;the&nbsp;TIN&nbsp;and&nbsp;PO4,&nbsp;on&nbsp;the&nbsp;contrary,&nbsp;it&nbsp;caused&nbsp;an&nbsp;increase&nbsp;in&nbsp;the&nbsp;nitrogen&nbsp;(N)&nbsp;up&nbsp;to&nbsp;19.9%&nbsp;and&nbsp;phosphorus&nbsp;(P)&nbsp;up&nbsp;to&nbsp;20.30%,&nbsp;while&nbsp;the&nbsp;wetlands&nbsp;reduced&nbsp;the&nbsp;N,&nbsp;P,&nbsp;and&nbsp;BOD5&nbsp;up&nbsp;to&nbsp;53.2%,&nbsp;58.2%,&nbsp;and&nbsp;36.5%,&nbsp;respectively&nbsp;(p&lt;0.05).&nbsp;According&nbsp;to&nbsp;the&nbsp;chemical&nbsp;and&nbsp;biological&nbsp;methods,&nbsp;the&nbsp;averages&nbsp;of&nbsp;the&nbsp;TIN&nbsp;and&nbsp;P&nbsp;loads&nbsp;for&nbsp;one&nbsp;tone&nbsp;of&nbsp;cultured&nbsp;trout&nbsp;without&nbsp;treatment&nbsp;were&nbsp;estimated&nbsp;to&nbsp;be&nbsp;were&nbsp;80&nbsp;kg&nbsp;and&nbsp;7&nbsp;kg,&nbsp;respectively.&nbsp;The&nbsp;annual&nbsp;TIN&nbsp;load&nbsp;of&nbsp;this&nbsp;trout&nbsp;farm&nbsp;was&nbsp;estimated&nbsp;to&nbsp;be&nbsp;21.3&nbsp;kg&nbsp;while&nbsp;the&nbsp;TP&nbsp;load&nbsp;was&nbsp;2.9&nbsp;kg&nbsp;for&nbsp;one&nbsp;tone&nbsp;of&nbsp;cultured&nbsp;trout&nbsp;when&nbsp;the&nbsp;treatment&nbsp;efficiency&nbsp;was&nbsp;taken&nbsp;into&nbsp;account.&nbsp;The&nbsp;microbiological&nbsp;analyses&nbsp;conducted&nbsp;with&nbsp;the&nbsp;effluent&nbsp;waters&nbsp;showed&nbsp;that&nbsp;the&nbsp;rate&nbsp;of&nbsp;aerobic&nbsp;mesophilic&nbsp;bacteria&nbsp;was&nbsp;found&nbsp;to&nbsp;be&nbsp;high&nbsp;in&nbsp;the&nbsp;summer&nbsp;but&nbsp;low&nbsp;in&nbsp;the&nbsp;winter.&nbsp;It&nbsp;was&nbsp;also&nbsp;detected&nbsp;that&nbsp;the&nbsp;coliform&nbsp;group&nbsp;bacteria&nbsp;were&nbsp;present&nbsp;in&nbsp;the&nbsp;environment&nbsp;in&nbsp;the&nbsp;summer&nbsp;while&nbsp;their&nbsp;occurence&nbsp;was&nbsp;with-in&nbsp;standards&nbsp;in&nbsp;the&nbsp;winter.</span></p>

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