Development of a single-stage mainstream anammox process using a sponge-bed trickling filter
Development of a single-stage mainstream anammox process using a sponge-bed trickling filter
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DOI：
10.1080/09593330.2020.1720309
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发表时间：
2020-01
影响因子：
2.8
通讯作者：
T. Watari;C. L. Vazquez;M. Hatamoto;Takashi Yamaguchi;J. V. van Lier
中科院分区：
文献类型：
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作者：
T. Watari;C. L. Vazquez;M. Hatamoto;Takashi Yamaguchi;J. V. van Lier
摘要利用亚硝酸盐作为电子受体的厌氧氨氧化制氮气（厌氧氨氧化工艺）被认为是一种在厌氧预处理工艺后脱氮的经济有效的解决方案。在实验室条件下，以厌氧氨氧化污泥为接种物，在无机械控氧的条件下，采用海绵滴滤塔（STF）反应器进行单级部分亚硝化-厌氧氨氧化工艺处理经厌氧预处理的浓缩生活污水。进水氨浓度为100 mg-N·L-1。STF反应器的KLa高于常规活性污泥法所观察到的KLa。STF反应器的氨氮和总氮去除率分别为89.8 ± 8.2%和42.7 ± 16.9%，基于海绵体积计算的氮负荷为0.55 ± 0.20 kg-N·m-3·day-1。STF保留污泥的微生物群落分析表明，在反应器中发生的自养和异养脱氮。图形摘要
ABSTRACT Anaerobic ammonia oxidation to nitrogen gas using nitrite as the electron acceptor (anammox process) is considered a cost-effective solution for nitrogen removal after an anaerobic pre-treatment process. In this study, we conducted a laboratory-scale experiment to develop a single-stage partial nitritation–anammox process in a sponge-based trickling filter (STF) reactor, inoculated with anammox sludge, simulating the treatment of anaerobically pretreated concentrated domestic sewage without mechanical oxygen control. The influent ammonia concentration was 100 mg-N·L−1. The KLa of the STF reactor was higher than those observed for conventional activated sludge processes. The STF reactor performed at 89.8 ± 8.2% and 42.7 ± 16.9% ammonia and TN removal efficiency, respectively, with a nitrogen loading rate of 0.55 ± 0.20 kg-N·m−3·day−1 calculated based on sponge volume. Microbial community analysis of the STF-retained sludge indicated that both autotrophic and heterotrophic nitrogen removal occurred in the reactor. GRAPHICAL ABSTRACT