摘要
      采用聚合氯化铝（PACl）、氯化铁（FeCl3）和混合FeCl3-PACl研究了三价混凝剂阳离子对化学强化一级处理污泥（CEPTS）厌氧消化（AD）过程中抗生素抗性基因（ARGs）去除机制、去除效率和去除模式的潜在影响。在添加100mg/L FeCl3的初级污泥AD中，23种ARGs和intI1的去除率提高到72.1%，在添加25mg/L PACl的初级污泥的AD中最低（仅54.4%）。添加单一或混合类型的铝基混凝剂对CEPTS AD中ARGs的去除在分批操作开始时开始迅速增加。另一方面，FeCl3对AD中ARGs的去除效率的快速提高和最大去除效率都晚于其他AD。
Abstract
The potential impact of the trivalent coagulant cations on the removal mechanisms, removal efficiencies and removal patterns of antibiotic resistance genes (ARGs) during anaerobic digestion (AD) of chemically enhanced primary treatment sludge (CEPTS) was investigated using polyaluminium chloride (PACl), ferric chloride (FeCl3) and mixed FeCl3-PACl. The removal efficiency of 23 ARGs and intI1 improved to 72.1% in AD of primary sludge with 100 mg/L FeCl3 and was lowest (only 54.4 %) in AD of primary sludge with 25 mg/L PACl. The removal of ARGs in AD of CEPTS with addition of single or mixed types of Al-based coagulant began to increase rapidly at the onset of batch operation. On the other hand, both the rapid increase in the removal efficiency of ARGs in AD with FeCl3 and the maximum removal efficiency were attained later than in the other ADs.

https://www.sciencedirect.com/science/article/abs/pii/S0960852421019416