Anaerobic treatment of antibiotic production wastewater pretreated with enhanced hydrolysis: Simultaneous reduction of COD and ARGs
文献类型：期刊论文
| 作者 | Tian, Zhe; Yi, Qizhen; Zhang, Yu; Gao, Yingxin; Yang, Min |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2017-03-01 |
| 卷号 | 110期号:0页码:211-217 |
| 关键词 | Oxytetracycline Production Wastewater Hydrolysis Pretreatment Antibiotic Resistance Antibacterial Potency Anaerobic Treatment |
| 英文摘要 | The presence of high concentration antibiotics in wastewater can disturb the stability of biological wastewater treatment systems and promote generation of antibiotic resistance genes (ARGs) during the treatment. To solve this problem, a pilot system consisting of enhanced hydrolysis pretreatment and an up-flow anaerobic sludge bed (UASB) reactor in succession was constructed for treating oxytetracycline production wastewater, and the performance was evaluated in a pharmaceutical factory in comparison with a full-scale anaerobic system operated in parallel. After enhanced hydrolysis under conditions of pH 7 and 85 degrees C for 6 h, oxytetracycline production wastewater with an influent chemical oxygen demand (COD) of 11,086 +/- 602 mg L-1 was directly introduced into the pilot UASB reactor. With the effective removal of oxytetracycline and its antibacterial potency (from 874 mg L-1 to less than 0.61 mg L-1 and from 900 mg L-1 to less than 0.84 mg L-1, respectively) by the enhanced hydrolysis pretreatment, an average COD removal rate of 83.2%, 78.5% and 68.9% was achieved at an organic loading rate of 33, 4.8 and 5.9 kg COD m(-3) d(-1), respectively. At the same time, the relative abundances of the total tetracycline (tet) genes and a mobile element (Class 1 integron (intI1)) in anaerobic sludge on day 96 were one order of magnitude lower than those in inoculated sludge on day 0 (P < 0.01). The reduction of ARGs was further demonstrated by metagenomic sequencing. By comparison, the full-scale anaerobic system treating oxytetracycline production wastewater with an influent COD of 3720 +/- 128 mg L-1 after dilution exhibited a COD removal of 51 +/- 4% at an organic loading rate (OLR) 1.2 +/- 0.2 kg m(-3) d(-1), and a total tet gene abundance in sludge was five times higher than the pilot-scale system (P < 0.01). The above result demonstrated that enhanced hydrolysis as a pretreatment method could enable efficient anaerobic treatment of oxytetracycline production wastewater containing high concentrations of oxytetracycline with significantly lower generation of ARGs. (C) 2016 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39474]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Tian, Zhe,Yi, Qizhen,Zhang, Yu,et al. Anaerobic treatment of antibiotic production wastewater pretreated with enhanced hydrolysis: Simultaneous reduction of COD and ARGs[J]. WATER RESEARCH,2017,110(0):211-217. |
| APA | Tian, Zhe,Yi, Qizhen,Zhang, Yu,Gao, Yingxin,&Yang, Min.(2017).Anaerobic treatment of antibiotic production wastewater pretreated with enhanced hydrolysis: Simultaneous reduction of COD and ARGs.WATER RESEARCH,110(0),211-217. |
| MLA | Tian, Zhe,et al."Anaerobic treatment of antibiotic production wastewater pretreated with enhanced hydrolysis: Simultaneous reduction of COD and ARGs".WATER RESEARCH 110.0(2017):211-217. |
入库方式： OAI收割
来源：生态环境研究中心
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