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‫ﺗﻮاﻧﺎﻳﻲ‬ ‫ﺑﺴﺘﺮ‬ ‫ﻣﺨﺘﻠﻒ‬ ‫ﻫﺎي‬ ‫ﺑﺎﻛﺘﺮﻳ‬ ‫ﻧﺸﺴﺖ‬ ‫ﺎﻳﻲ‬ ‫آب‬ ‫ﺗﺼﻔﻴﻪ‬ ‫در‬ ‫ﺳﻴﺴﺘﻢ‬ ‫ﺑﺴﺘﻪ‬ ‫ﻣﺪار‬ ‫ﻫﺎي‬ ‫ﭘﺮورش‬ ‫آﺑﺰﻳﺎن‬ ‫ﻟﻐﺎت‬ ‫ﻛﻠﻴﺪي‬ : ،‫آﻣﻮﻧﻴﺎك‬ ‫ﭘﺎﻻ‬ ‫ﻧﻴﺘﺮوﺑﺎﻛﺘﺮ‬ ،‫ﻣﻌﺪﻧﻲ‬ ‫ﺗﺮﻛﻴﺒﺎت‬ ،‫زﻳﺴﺘﻲ‬ ‫ﻳﺸﮕﺮ‬ * ‫ﻣﺴﺌﻮل‬ ‫ﻧﻮﻳﺴﻨﺪه‬ Evaluation of some biofilter substrates in freshwater recirculation system

Nekuiefard, Manaffar, Motallebi, Moghanjooei, Sharifian
2018 Downloaded from isfj.ir at 21:13 +0430 on Wednesday May 16th 2018 Downloaded from isfj.ir at 21:13 +0430 on Wednesday   unpublished

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The nitrifying bacteria acting on various biofilter substrates including: scoria, P.V.C., marble and zeolite were evaluated. The experiment started with manufacture of a recirculation system with 130 liter fresh water volume in 7 l.min-1 flow rate in 3 replicate for every treatment. The volume of each biofilter was 60×40×30cm and after achievement to stable environmental conditions the nitrifying bacteria at a concentration of 10 5 ml-1 were inoculated in each biofilters. Daily 3-10mg.l-1 of
more » ... Cl was added to biofilters. The procedure was conducted by exposure of Ammonium and Nitrate concentrations and pH in biofilters. The results showed that the Scoria can be reliable substrate as biofilter, in which provide the best substrate for the growth and attachment of the nitrifying bacteria which can reduce the retention time of a biofilter from 40-60 to 15 days.
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Nekuiefard, Manaffar, Motallebi, Moghanjooei, Sharifian. "‫ﺗﻮاﻧﺎﻳﻲ‬ ‫ﺑﺴﺘﺮ‬ ‫ﻣﺨﺘﻠﻒ‬ ‫ﻫﺎي‬ ‫ﺑﺎﻛﺘﺮﻳ‬ ‫ﻧﺸﺴﺖ‬ ‫ﺎﻳﻲ‬ ‫آب‬ ‫ﺗﺼﻔﻴﻪ‬ ‫در‬ ‫ﺳﻴﺴﺘﻢ‬ ‫ﺑﺴﺘﻪ‬ ‫ﻣﺪار‬ ‫ﻫﺎي‬ ‫ﭘﺮورش‬ ‫آﺑﺰﻳﺎن‬ ‫ﻟﻐﺎت‬ ‫ﻛﻠﻴﺪي‬ : ،‫آﻣﻮﻧﻴﺎك‬ ‫ﭘﺎﻻ‬ ‫ﻧﻴﺘﺮوﺑﺎﻛﺘﺮ‬ ،‫ﻣﻌﺪﻧﻲ‬ ‫ﺗﺮﻛﻴﺒﺎت‬ ،‫زﻳﺴﺘﻲ‬ ‫ﻳﺸﮕﺮ‬ * ‫ﻣﺴﺌﻮل‬ ‫ﻧﻮﻳﺴﻨﺪه‬ Evaluation of some biofilter substrates in freshwater recirculation system." Downloaded from isfj.ir at 21:13 +0430 on Wednesday May 16th 2018 Downloaded from isfj.ir at 21:13 +0430 on Wednesday (2018)