Initiating an anaerobic ammonium oxidation reactor by inoculation with starved anaerobic ammonium oxidation sludge and modified carriers,Bioresource Technology

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Initiating an anaerobic ammonium oxidation reactor by inoculation with starved anaerobic ammonium oxidation sludge and modified carriers
Bioresource Technology ( IF 9.7 ) Pub Date : 2022-06-11 , DOI: 10.1016/j.biortech.2022.127438
Jingwen Luo ₁ , Jinjin Yang ₁ , Shaokang Li ₁ , Xiang Li ₁ , Genwang Chang ₁ , Yifei Yang ₁

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Prolonged starved anammox sludge (SAS) obtained during initial rejuvenation was inoculated into a reactor together with activated sludge (AS), anaerobic granular sludge (AGS) and modified carriers consisting of honeycomb carrier with high biological interception and activated carbon carrier with high adsorption performance. SAS accounted for 5% of the inoculated sludge. The anammox process was started and operated at around 25℃. After 160 days, the nitrogen loading rate and nitrogen removal rate reached 1.12 kgN·m·d and 0.97 kgN·m·d, respectively. Obvious red anammox biofilms were observed on the modified carriers. Microbial community analysis showed that the relative abundance of anammox bacteria increased from < 0.1% to 22.96%. and were the dominating anammox species. This work demonstrates the potential to reuse SAS to improve the start-up efficiency of anammox reactors, which makes good economic sense.

中文翻译：

通过接种饥饿厌氧氨氧化污泥和改性载体启动厌氧氨氧化反应器

将初始再生过程中获得的长期饥饿厌氧氨氧化污泥（SAS）与活性污泥（AS）、厌氧颗粒污泥（AGS）以及由高生物拦截的蜂窝载体和高吸附性能的活性炭载体组成的改性载体一起接种到反应器中。 SAS占接种污泥的5%。厌氧氨氧化工艺在25℃左右启动并运行。 160 d后，氮负荷和脱氮率分别达到1.12 kgN·m·d和0.97 kgN·m·d。在修饰后的载体上观察到明显的红色厌氧氨氧化生物膜。微生物群落分析表明，厌氧氨氧化菌的相对丰度从< 0.1%增加到22.96%。是主要的厌氧氨氧化物种。这项工作展示了重复利用 SAS 来提高厌氧氨氧化反应器启动效率的潜力，具有良好的经济意义。

更新日期：2022-06-11

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