Yang Min, Xie Done, Ma Xinxin, Gao Ming, Wu Chuanfu, Wang Qunhui
Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.
Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Beijing Key Laboratory on Disposal and Resource Recovery of Industry Typical Pollutants, University of Science and Technology Beijing, Beijing 100083, PR China.
Bioresour Technol. 2021 Dec;341:125806. doi: 10.1016/j.biortech.2021.125806. Epub 2021 Aug 19.
Anaerobic digestion (AD) of antibiotic fermentation dreg is effective because of its satisfactory methanogenic performance and antibiotic removal rate. Thermophilic AD, an important branch, has not been studied. This study explored the effects of mesophilic and thermophilic AD on tylosin fermentation dreg (TFD) alone-digestion and co-digestion with food waste. The methane production (245-420 mL/g-VS) of mesophilic AD was 20.7%-28.6% higher than thermophilic AD, but the maximum methane production rate (R), lag period (λ), and hydrolysis rate constant (k) of thermophilic AD were 1.81, 0.236 and 3.16 times higher than those of mesophilic AD, respectively. However, the residual tylosin in mesophilic AD was always higher than that in thermophilic AD. The addition of food waste increased the methane production rate and yield under both temperature conditions. Therefore, due to the higher rate and yield of methane production, mesophilic AD, especially co-digestion, is more suitable for the treatment of TFD.
抗生素发酵渣的厌氧消化（AD）效果良好，因为其产甲烷性能和抗生素去除率令人满意。嗜热厌氧消化作为一个重要分支，尚未得到研究。本研究探讨了中温厌氧消化和嗜热厌氧消化对泰乐菌素发酵渣（TFD）单独消化以及与食物垃圾共消化的影响。中温厌氧消化的产气量（245 - 420 mL/g-VS）比嗜热厌氧消化高20.7% - 28.6%，但嗜热厌氧消化的最大产甲烷速率（R）、延滞期（λ）和水解速率常数（k）分别比中温厌氧消化高1.81倍、0.236倍和3.16倍。然而，中温厌氧消化中残留的泰乐菌素始终高于嗜热厌氧消化。添加食物垃圾提高了两种温度条件下的产甲烷速率和产气量。因此，由于产甲烷速率和产气量较高，中温厌氧消化，尤其是共消化，更适合处理TFD。
