Development of Microorganisms Based Effluent Treatment System to Remove Nitrogen and Phosphorus from Land Fish Farms

Title
Development of Microorganisms Based Effluent Treatment System to Remove Nitrogen and Phosphorus from Land Fish Farms
Author(s)
김근호; 김진수; 김성철; JJ Bang; 유택현; 이택견; 이상섭
KIOST Author(s)
Lee, Taek Kyun(이택견)
Publication Year
2016-06-18
Abstract
Background: Red tide blooms have made massive economic losses and marine environmentaldisturbances in coastal region of Korea. This research was focused to develop an effectivebiological Anaerobic/Anoxic/Oxic (A2O) treatment system for Land Fish-farm with highlyefficient nitrogen and phosphorus removing bacteria and sediments.Methods: High efficientbacteria were isolated from the emerging algal blooms sites at Southern coastal of Korea. A totalof 960 strains were determined by their nitrogen and phosphorus removal efficiency.Results:From screening, Bacillus aryabhattai strain KGN1 and Vibrio neocaledonicus strain KGP1 showed more than 86.0% nitrogen and 99.9% phosphorus removal efficiency in 10 h, respectively. Interestingly, when consortia of strain KGN1 and KGP1 were made they were able to remove both nitrogen and phosphorus up to 98.0% for 10 h in a batch culture. Furthermore, both strains with sediments were employed to lab-scale A2O biological treatment system and then operated for 7 months with various operating factors such as different HRT, F/M ratio, aerobic/anaerobic time, volumetric ratio. The optimal conditions for highest effluent treatment were as HRT 6 h, F/M ratio 0.27, intermittent aeration for 30min, volumetric ratio of 1:0.95:1.4 and internal recycle of 1 Q. The reactor showed T-N of 95.6%, NH3-N of 97.3%, T-P of 97.6% and PO4 3--P of 96.0% removal efficiency, respectively. The kinetic Land Fish-farm with highlyefficient nitrogen and phosphorus removing bacteria and sediments.Methods: High efficientbacteria were isolated from the emerging algal blooms sites at Southern coastal of Korea. A totalof 960 strains were determined by their nitrogen and phosphorus removal efficiency.Results:From screening, Bacillus aryabhattai strain KGN1 and Vibrio neocaledonicus strain KGP1 showed more than 86.0% nitrogen and 99.9% phosphorus removal efficiency in 10 h, respectively. Interestingly, when consortia of strain KGN1 and KGP1 were made they were able to remove both nitrogen and phosphorus up to 98.0% for 10 h in a batch culture. Furthermore, both strains with sediments were employed to lab-scale A2O biological treatment system and then operated for 7 months with various operating factors such as different HRT, F/M ratio, aerobic/anaerobic time, volumetric ratio. The optimal conditions for highest effluent treatment were as HRT 6 h, F/M ratio 0.27, intermittent aeration for 30min, volumetric ratio of 1:0.95:1.4 and internal recycle of 1 Q. The reactor showed T-N of 95.6%, NH3-N of 97.3%, T-P of 97.6% and PO4 3--P of 96.0% removal efficiency, respectively. The kinetic
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24709
Bibliographic Citation
ASM Microbe 2016, pp.249, 2016
Publisher
미국미생물학회
Type
Conference
Language
English
Publisher
미국미생물학회
Related Researcher
Research Interests

Marine virus,Marine pathogens,해양바이러스,해양병원체

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