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首页> 外文期刊>Journal of Chemical Technology & Biotechnology >Start up of a pilot scale aerobic granular reactor for organic matter and nitrogen removal
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Start up of a pilot scale aerobic granular reactor for organic matter and nitrogen removal

机译：启动中试规模好氧颗粒反应器以去除有机物和氮

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Aerobic granulation is a promising technology for the removal of nutrients in wastewater. Since research to date is mainly focused at laboratory scale, a pilot-scale sequencing batch reactor (100 L) was operated to obtain granular sludge in aerobic conditions grown on acetate as organic carbon substrate. Selective pressure created by means of decreasing settling time and increasing organic loading rate (OLR) enhanced the formation of aerobic granular sludge. Granules appeared after 6 days and reached an average diameter around 3.5 mm. The settling velocity value should be higher than 11 m h~(-1) in order to remove flocculent biomass. The reactor treated OLRs varying between 2.5 and 6.0 g COD L~(-1) d~(-1) reaching removal efficiencies around 96%, which demonstrates the high activity and the ability of the system to withstand high OLR. Nevertheless, a rapid increase in the OLR produced a loss of biomass in the reactor due to breakage of the granules.
机译：好氧制粒是去除废水中养分的有前途的技术。由于迄今为止的研究主要集中在实验室规模，因此运行了中试规模的间歇式反应器（100升），以在有氧条件下生长在醋酸盐上作为有机碳底物的条件下获得颗粒污泥。通过减少沉降时间和增加有机负荷率（OLR）产生的选择压力增强了好氧颗粒污泥的形成。 6天后出现颗粒，并达到约3.5mm的平均直径。为了去除絮凝生物质，沉降速度值应大于11 m h〜（-1）。经反应器处理的OLR在2.5至6.0 g COD L〜（-1）d〜（-1）之间变化，去除效率达到96％左右，这证明了其高活性和系统承受高OLR的能力。然而，由于颗粒的破裂，OLR的快速增加导致反应器中生物质的损失。

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