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| The removal effect of three classes of antibiotics in two typical swine wastewater treatment systems |
| Received:August 24, 2018 Revised:November 09, 2018 |
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| KeyWord:antibiotics;swine farm;wastewater treatment;aqueous removal rates;aqueous mass loading |
| Author Name | Affiliation | E-mail | | ZHOU Jing | College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | ZHI Su-li | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | GONG Xiang-jing | Jinghai Animal Disease Prevention and Control Center, Tianjin 301600, China | | | YANG Feng-xia | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | GU Yan-ru | College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | DING Fei-fei | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | ZHANG Ke-qiang | College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | kqzhang68@126.com |
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| Abstract: |
| To understand the antibiotic removal effect in the wastewater treatment process of large-scale swine farms, three kinds of typical veterinary antibiotics[sulfonamides (SAs), quinolones (FQs), and tetracyclines (TCs)] in the effluent of each processing unit from two typical large-scale swine farms in Tianjin, China were analyzed. The distribution and total mass loading of these antibiotics were also investigated in the two selected farms. The results showed that the residual concentrations of the antibiotics were different in the various treatment units. Ten kinds of antibiotics were detected in the F1 swine farm. The highest concentration of sulfadimidine (SMN)was 45.78 μg·L-1 and the total aqueous removal rates of antibiotics varied from-53.32% to 99.33%. The aqueous removal rates of SAs and TCs were highest in the Up-flow Anaerobic Sludge Bed (UASB), and the aqueous removal rates of FQs were highest in the O pool. The aqueous mass loading of influent and effluent in F1 was 9 854.43 mg·d-1 and 1 214.49 mg·d-1, respectively. Five kinds of antibiotics were detected in the F2 swine farm. The highest concentration of enrofloxacin (ENR)was 8.86 μg·L-1 and the total aqueous removal rates of antibiotics varied from-6.95% to 78.80%. The aqueous removal rates of SAs and FQs were highest in the tertiary sedimentation pool, and the aqueous removal rates of TCs were highest in the plant pond. The aqueous mass loading of influent and effluent in F2 was 2 014.90 mg·d-1 and 1 527.96 mg·d-1, respectively. The F1 process could clearly remove antibiotics, and antibiotics in F1 and F2 were effectively removed in the anaerobic and oxic phases. Therefore, the alternate treatment of anaerobic and aerobic processes is recommended as the most effective way to remove antibiotics in the aqueous phase. |
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