Abstract
This paper investigated the influence of various florfenicol concentrations on the treatment effect of greenhouse turtle breeding wastewater by intermittent aeration dynamic membrane bioreactor (IADMBR). The results showed that when the florfenicol concentration reached 80 and 120 ng L−1, the average removal efficiencies of ammonia nitrogen and chemical oxygen demand (COD) decreased by 32 and 48 %, respectively. Thus, the enhanced removal of florfenicol and its maintenance at a low concentration are prerequisites to ensure excellent effluent quality. Orthogonal experiments showed that the optimized IADMBR process parameters were hydraulic retention time (HRT) = 5 h, sludge retention time (SRT) = 30 days, and C/N = 2.5; using this combination, the florfenicol concentration was reduced to 25.8 ng L−1, and the average removal efficiency was as high as 78.5 %. The large-scale field pilot test showed that the optimized IADMBR process not only ensured standardized discharge of greenhouse turtle breeding wastewater but also effectively reduced antibiotic pollution and was thus worthy of use in practical applications.
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Acknowledgments
This work was supported by the Key Research and Development Project of Zhejiang Province (No. 2015C03018), Key Project of Science and Technology Special Projects on the Demonstration Area of Ecological Civilization of Huzhou City (No. 2014ZD2019), National Natural Science Foundation of China (No. 21207036), Special Commissioned Project of the National Social Science Fund (No. 16@ZH005), Significant Agricultural Projects of Major Science, and Technology Projects of Zhejiang Province (No. 2014C02011). Moreover, a heartfelt thanks to the Environmental Protection Monitoring Centre Station in Huzhou for providing all the guidance and assistance with the HPLC determination of the florfenicol concentration.
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Wu, X., Wu, H., Mao, L. et al. Influence of Florfenicol on the Treatment Effect of Intermittent Aeration Dynamic Membrane Bioreactors, and its Enhanced Removal Process Investigation. Water Air Soil Pollut 227, 418 (2016). https://doi.org/10.1007/s11270-016-3134-2
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DOI: https://doi.org/10.1007/s11270-016-3134-2