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The management of undesirable cyanobacteria blooms in channel catfish ponds using a constructed wetland: Contribution to the control of off-flavor occurrences
Zhong, Fei (1); Gao, Yunni (1); Yu, Tao (1); Zhang, Yongyuan (1); Xu, Dong (1); Xiao, Enrong (1); He, Feng (1); Zhou, Qiaohong (1); Wu, Zhenbin (1); Wu, Z.(wuzb@ihb.ac.cn)
2011
Source PublicationWater Research
ISSN0043-1354
Volume45Issue:19Pages:6479-6488
AbstractAn exploratory study on the management of undesirable cyanobacteria blooms with respect to off-flavor problems using an integrated vertical-flow constructed wetland (CW) was performed at a small commercial-scale channel catfish farm from 2004 to 2007. The results of the three-year experiment indicated that water treatment by the CW could reduce the possibility of dominance by undesirable cyanobacteria species that often cause off-flavor problems. A detailed investigation in 2007, showed that the concentrations of geosmin, MIB (2-methylisoborneol), and β-cyclocitral in the water of the recirculating pond (4.3ngL-1, U.D. (undetected) and 0.2ngL-1, respectively) treated by the CW were significantly lower than those in the control pond (152.6ngL-1, 63.3ngL-1 and 254.8ngL-1, respectively). In addition, the relationships among the cyanobacteria species, the off-flavor compounds and ten environmental variables were explored by canonical correspondence analysis (CCA). The results showed that Oscillatoria sp., Oscillatoria kawamurae and Microcystis aeruginosa were the main sources of off-flavor compounds in the catfish ponds. The successful manipulation of undesirable cyanobacteria species potentially resulted in lower concentrations of odorous compounds in the water of the recirculating pond. An investigation of the concentrations of geosmin and MIB in catfish fillets showed that the levels of odorous compounds were below the OTC (odor threshold concentration) values in the recirculating pond but were above the OTC values from July to October in the control pond. Water recycling by the CW could potentially be one of the best management practices to control off-flavor occurrences in aquaculture.
Department(1) State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (2) Marine Fisheries Research Institute of Jiangsu Province, Nantong 226007, China
Indexed ByEI
Language英语
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16678
Collection水环境工程研究中心_期刊论文
Corresponding AuthorWu, Z.(wuzb@ihb.ac.cn)
Recommended Citation
GB/T 7714
Zhong, Fei ,Gao, Yunni ,Yu, Tao ,et al. The management of undesirable cyanobacteria blooms in channel catfish ponds using a constructed wetland: Contribution to the control of off-flavor occurrences[J]. Water Research,2011,45(19):6479-6488.
APA Zhong, Fei .,Gao, Yunni .,Yu, Tao .,Zhang, Yongyuan .,Xu, Dong .,...&Wu, Z..(2011).The management of undesirable cyanobacteria blooms in channel catfish ponds using a constructed wetland: Contribution to the control of off-flavor occurrences.Water Research,45(19),6479-6488.
MLA Zhong, Fei ,et al."The management of undesirable cyanobacteria blooms in channel catfish ponds using a constructed wetland: Contribution to the control of off-flavor occurrences".Water Research 45.19(2011):6479-6488.
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