School of Environment and Nature Resources, Renmin University of China, Beijing 100872, PR China; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, PR China; Department of Environmental Engineering, Technical University of Denmark, Kgs. Lyngby DK-2800, Denmark.
Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China.
Bioresour Technol. 2021 Aug;333:125156. doi: 10.1016/j.biortech.2021.125156. Epub 2021 Apr 20.
Acidic anaerobic digestion attracted much attention and interest due to its significant advantage in wastewater treatment. In the present study, methanogenic fermentation was successfully operated under acidic condition during treating wastewater containing oxytetracycline (OTC) in a scale up anaerobic baffled reactor (ABR). After start-up process, the pH value in the first compartment was 4.60 with high activity of methanogenesis. After stabilization, different OTC loading of 1.0, 3.3 and 5.0 g/m/d was added in the influent for OTC removal. The resulted showed that OTC addition had little impact on the methane generation with whole COD and OTC removal rate of 95% and 60%, respectively. The microbial analysis, OTC addition could significantly influence the bacteria and archaea communities. To be more specific, Methanosaeta showed the highest relative abundance and tolerance to OTC under acidic condition. The present work supplied deeper insights into methane generation from acidic condition during wastewater containing OTC treatment.
由于在废水处理方面具有显著优势，酸性厌氧消化受到了广泛关注和兴趣。在本研究中，在处理含有土霉素（OTC）的废水中，成功地在扩大规模的厌氧折流反应器（ABR）中在酸性条件下进行产甲烷发酵。启动过程后，第一隔室的 pH 值为 4.60，产甲烷活性很高。稳定后，在进水口中添加不同的 OTC 负荷，分别为 1.0、3.3 和 5.0 g/m/d，以去除 OTC。结果表明，OTC 的添加对甲烷的生成几乎没有影响，整个 COD 和 OTC 的去除率分别为 95%和 60%。微生物分析表明，OTC 的添加会显著影响细菌和古菌群落。更具体地说，在酸性条件下，产甲烷菌属表现出最高的相对丰度和对 OTC 的耐受性。本工作为从含有 OTC 的废水处理的酸性条件下产生甲烷提供了更深入的见解。
