摘要

       化学强化初级处理（CEPT）污泥和非CEPT（常规沉淀）污泥的厌氧消化（AD）在中温和高温条件下进行比较。 在 CEPT 污泥的嗜温 AD 中观察到最高的甲烷产量（692.46 ± 0.46 mL CH4/g VSremoved in CEPT 污泥）。 同时，嗜热条件更有利于去除总抗生素抗性基因（ARG）。 在这项研究中，在处理过的非 CEPT 和 CEPT 污泥之间没有观察到 ARGs 和 1 类整合素整合酶基因 (intI1) 的命运和去除的可测量差异。 然而，冗余分析表明细菌群落的变化主要是对 ARGs 和 intI1 的变化负责。 网络分析进一步揭示了 ARGs 和 intI1 的潜在宿主细菌。 

       Anaerobic digestion (AD) of chemically enhanced primary treatment (CEPT) sludge and non-CEPT (conventional sedimentation) sludge were comparatively operated under mesophilic and thermophilic conditions. The highest methane yield (692.46 ± 0.46 mL CH4/g VSremoved in CEPT sludge) was observed in mesophilic AD of CEPT sludge. Meanwhile, thermophilic conditions were more favorable for the removal of total antibiotic resistance genes (ARGs). In this study, no measurable difference in the fates and removal of ARGs and class 1 integrin-integrase gene (intI1) was observed between treated non-CEPT and CEPT sludge. However, redundancy analysis indicated that shifts in bacterial community were primarily accountable for the variations in ARGs and intI1. Network analysis further revealed potential host bacteria for ARGs and intI1.

https://www.sciencedirect.com/science/article/abs/pii/S0960852417312695