摘要
     本研究调查了污泥在不同操作温度（35°C和55°C）下的厌氧消化（AD）如何对固体停留时间（SRT=20、30和40天）的变化做出反应，以去除抗生素抗性基因（ARGs）和产生沼气。观察到，在短SRT（20天）下，嗜热性AD（TAD）中的ARGs含量低于中温性AD（MAD），其去除率分别为75.80%和45.78%。在较长的SRTs（30天和40天）下，MAD中ARGs的去除率分别提高到51.79%和79.63%，而TAD中的ARGs去除率分别下降到53.95%和24.65%。这些发现表明，MAD需要更长的SRT来去除更多的ARG，而嗜热反应器在更短的SRT下更有效。此外，与不同SRT的中温条件相比，在高温条件下产生的沼气多34–42%，这表明缩短SRT和提高温度是产生沼气的有效策略。
Abstract
This study investigated how anaerobic digestion (AD) of sludge under different operating temperatures (35 °C and 55 °C) may respond to changes in solids retention time (SRT = 20, 30, and 40 days) in terms of the removal of antibiotic resistance genes (ARGs) and biogas production. It was observed that at short SRTs (20 days), ARGs in thermophilic AD (TAD) were less abundant than in mesophilic AD (MAD) with a higher removal rate of 75.80 % vs. 45.78 %, respectively. At longer SRTs (30 and 40 days), the removal of ARGs in MAD increased to 51.79 % and 79.63 % while it decreased to 53.95 % and 24.65 % in TAD. These findings indicate that MAD needs longer SRTs to remove more ARGs, while thermophilic reactors are more effective at shorter SRTs. Moreover, 34–42 % more biogas was produced at thermophilic conditions relative to mesophilic conditions at different SRTs, suggesting that shortening the SRT and increasing the temperature are effective strategies for producing biogas.

https://www.sciencedirect.com/science/article/pii/S2589014X23000488