Aerobic granular sludge cultivated from Fe-loaded activated carbon as carrier working low-strength wastewater conditions by bioreactor.
Aerobic granular sludge cultivated from Fe-loaded activated carbon as carrier working low-strength wastewater conditions by bioreactor.
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DOI：
10.1016/j.chemosphere.2022.135532
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发表时间：
2022-07
期刊：
影响因子：
8.8
通讯作者：
Dexin Lin;Xinzhi Li;Mingxiu Hou;Yuliang Chen;Jie Zeng;X. Yi
中科院分区：
文献类型：
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作者：
Dexin Lin;Xinzhi Li;Mingxiu Hou;Yuliang Chen;Jie Zeng;X. Yi
本研究提出了一种新的方法，以促进造粒过程，同时加快营养物质的降解效率。新的策略可以包括在颗粒培养启动之前制备负载Fe的活性炭（FAC），然后用这种材料培养好氧颗粒污泥（AGS）过程。此外，本实验还可以进一步了解FAC的制备和性质对AGS的形成和性能的影响。结果表明，与对照相比，FAC强化了沉淀性能，去除效果显著。同时，蛋白质（PN）和多糖（PS）的含量也显著增加，表明FAC诱导了物质的产生。分子生物学方法表明，添加FAC后，微生物和微生物数量增多，有利于颗粒的快速形成和营养物质的去除。这项研究表明，FAC的存在是启动污泥颗粒形成以促进废水处理的有用策略，其中COD和NH 4+含量约为150-100和30 mg L−1。
This study proposes a new method to promote the granulation process while accelerating the degradation efficiency of nutrients. The new strategy could involve preparing Fe-loaded activated carbon (FAC) before start-up of granular cultivation and then cultivating the process of aerobic granular sludge (AGS) with such materials. In addition, this experiment could further comprehend how the preparation and characteristics of FAC affect the formation and properties of AGS. The conclusions showed that compared with the control, FAC enhanced the sedimentation performance and significant removal efficiency. Meanwhile, the values of protein (PN) and polysaccharide (PS) also increased significantly in the addition of FAC, indicating the production of substances were induced by FAC. Molecular biology methods indicated that the rapid production of granulation and removal of nutrients were considered as the abundance of various microbes and denitrifying bacteria at the addition of FAC. This research showed that the presence of FAC is a useful strategy for the initiation of sludge particle formation to promote the treatment of wastewater, containing COD and NH4+at about 150–100 and 30 mg L−1.