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首页> 外文期刊>Journal of Residuals Science & Technology >Nitrogen Conversion Characteristics of ANAMMOX Sludge for Long-term Preservation
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Nitrogen Conversion Characteristics of ANAMMOX Sludge for Long-term Preservation

机译:ANAMMOX污泥长期保存的氮转化特性

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Since inoculated sludge with ANAMMOX could efficiently reduce the startup time of the ANAMMOX reactor, it is important to develop a cost-effective technology for preservation. In the present study, the flocculent ANAMMOX sludge was preserved under either –20°C, 5°C, natural environment or 30°C for 15d, 30d, 45d, 150d and 365d, respectively. The preserved ANAMMOX sludge under all these conditions displayed different levels of nitrification. Specifically, freezing conditions (–20°C) led to a loss of ANAMMOX activity, whereas ANAMMOX activity was the highest in natural environment, which showed a positive linear relationship with the relative amount of substrates. Moreover, a short-term anoxic (≤ 45d) preservation in a dark yet natural environment (0 ~ 15°C) is a highly economical and effective approach.
机译:由于用ANAMMOX接种的污泥可以有效地减少ANAMMOX反应器的启动时间,因此开发一种具有成本效益的防腐技术非常重要。在本研究中,絮凝的ANAMMOX污泥分别在–20°C,5°C,自然环境或30°C下分别保存15d,30d,45d,150d和365d。在所有这些条件下保存的ANAMMOX污泥显示出不同的硝化水平。具体而言,冷冻条件(–20°C)导致ANAMMOX活性降低,而ANAMMOX活性在自然环境中最高,与底物的相对量呈正线性关系。此外,在黑暗而自然的环境(0〜15°C)中短期缺氧(≤45d)保存是一种非常经济有效的方法。

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