Effects of Recirculating Aquaculture System Wastewater on Anammox Performance and Community Structure
Effects of Recirculating Aquaculture System Wastewater on Anammox Performance and Community Structure
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DOI：
10.3390/pr9071183
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发表时间：
2021-07
期刊：
影响因子：
3.5
通讯作者：
Jonathan A. C. Roques;F. Micolucci;Suguru Hosokawa;K. Sundell;T. Kindaichi
中科院分区：
文献类型：
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作者：
Jonathan A. C. Roques;F. Micolucci;Suguru Hosokawa;K. Sundell;T. Kindaichi
循环水养殖系统（RAS）是水产养殖业可持续发展的良好候选人。RAS目前的一个限制是含氮废物的产生和积累，这可能会影响鱼类健康。本文研究了厌氧氨氧化工艺处理冷水型海水淡化厂废水的潜力。我们表明，海洋厌氧氨氧化细菌Escheridatus Scalindua是一个有前途的候选人。然而，其活性受到RAS废水中的未知化合物和/或必需微量元素（TE）的次优的影响。当富含硝酸盐的RAS废水在没有TE补充的情况下用作介质时，厌氧氨氧化活性在NH 4+和NO2−去除中分别下降到2%和13%。在随后的阶段中，向RAS废水中添加TE补充剂，并显示厌氧氨氧化活性的恢复（NH 4+和NO2−去除率分别为25%和24%）。未来的研究需要确定未知的因素，并确定有关TE的具体需求，以优化RAS废水处理的Scalindua。
Recirculating aquaculture systems (RAS) are good candidates for the sustainable development of the aquaculture sector. A current limitation of RAS is the production and accumulation of nitrogenous waste, which could affect fish health. We investigated the potential of the anaerobic ammonia oxidation (anammox) process to treat marine wastewater from a cold-water RAS. We show that the marine anammox bacteria Candidatus Scalindua is a promising candidate. However, its activity was affected by unknown compounds in the RAS wastewater and/or the sub-optimum of essential trace elements (TEs). Anammox activity dropped to 2% and 13% in NH4+ and NO2− removal, respectively, when nitrate-rich RAS wastewater was used as a medium in the absence of TE supplementation. A TE supplementation was added to the RAS wastewater in a subsequent phase, and a recovery in anammox activity was shown (25% and 24% in NH4+ and NO2− removal, respectively). Future studies need to identify the unknown factor and determine the specific needs regarding TE for optimal RAS wastewater treatment by Candidatus Scalindua.