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首页> 外文期刊>Journal of Bioscience and Bioengineering >Partial Nitrification of Ammonium-Rich Wastewater as Pretreatment for Anaerobic Ammonium Oxidation(Anammox) Using Membrane Aeration Bioreactor
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Partial Nitrification of Ammonium-Rich Wastewater as Pretreatment for Anaerobic Ammonium Oxidation(Anammox) Using Membrane Aeration Bioreactor

机译:膜曝气生物反应器处理富氨废水的部分硝化作为厌氧铵氧化(Anammox)的预处理

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摘要

A lab-scale membrane aeration bioreactor(MBR)system was developed for treating synthetic ammonium-rich wastewater to yield an appropriate NO2~-/NH_4~+ mixture as a pretreatment for anaerobic ammonium oxidation(Anammox).The effluent with a suitable NO2~-/NH_4~+ ratio(1:1 to 1:1.3)was obtained in 24 h using the developed MBR system under suitable conditions.Additionally,the control of bulk dissolved oxygen(DO)level under a desired condition(anoxic condition)was easier and more economical than traditional aeration systems.An optimal initial alkalinity of 1500 mg CaCO3l~(-1)was necessary for achieving 50% partial nitrification of wastewater with an initial ammonium concentration of 510 mg NH4-N l~(-1)within 24 h.Furthermore,there is no need for pH adjustment by adding a base or an acid throughout the reaction if the initial alkalinity is appropriately controlled.Both the appropriate NO2~-/NH_4~+ ratio and the low DO level make this MBR system an ideal system for Anammox.
机译:开发了实验室规模的膜曝气生物反应器(MBR)系统,用于处理富含氨的合成废水,以产生合适的NO2〜-/ NH_4〜+混合物作为厌氧铵氧化(Anammox)的预处理。在适当的条件下,使用开发的MBR系统在24小时内获得-/ NH_4〜+比率(1:1至1:1.3)。此外,在期望的条件(缺氧条件)下控制大体积溶解氧(DO)水平与传统的曝气系统相比,更简单,更经济24小时。此外,如果适当控制初始碱度,则无需在整个反应过程中添加碱或酸来调节pH。适当的NO2〜-/ NH_4〜+比值和低DO含量使得该MBR系统Anammox的理想系统。

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