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首页> 外文期刊>Separation and Purification Technology >Treatment of distillery effluent in a membrane bioreactor (MBR) equipped with mesh filter
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Treatment of distillery effluent in a membrane bioreactor (MBR) equipped with mesh filter

机译：在配有网式过滤器的膜生物反应器（MBR）中处理酒厂废水

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摘要

This work investigates operation of a laboratory scale membrane bioreactor (MBR) in the continuous mode for distillery wastewater (spentwash) treatment using submerged 30 μm nylon mesh filters. The inoculum was municipal activated sludge, which was first acclimatized in a fed-batch reactor over a period of 102 days, before initiating continuous operation. Critical flux for this wastewater-fllter combination was measured by flux stepping method, and the MBR was operated under subcritical flux conditions. Organic loading rates ranging from 3 to 5.71 kg m~(-3) day~(-1) were investigated and the performance was analyzed in terms of COD removal and biomass growth in the reactor. Up to 41 % COD removal was obtained over 245 days of reactor operation. The molecular weight profiles of the untreated and treated effluent suggested that the degradation of low molecular weight compounds occurred in the reactor while the high molecular weight compounds comprising the colour imparting melanoidins remained unaffected. Up to 100% suspended solid retention (average 87%) was obtained and the system could be operated up to 2 weeks without significant flux drop.
机译：这项工作调查了实验室规模的膜生物反应器（MBR）在连续模式下使用浸入式30μm尼龙网式过滤器处理酒厂废水（废水）的操作。接种物是市政活性污泥，在开始连续运行之前，首先在分批进料反应器中适应了102天。通过通量步进法测量该废水-滤料组合的临界通量，MBR在亚临界通量条件下运行。研究了有机负载量在3到5.71 kg m〜（-3）天〜（-1）的范围，并根据反应器中COD的去除和生物量的增长对性能进行了分析。在反应器运行的245天中，COD去除率高达41％。未经处理和经处理的流出物的分子量分布表明，低分子量化合物的降解发生在反应器中，而包含赋予黑色素的颜色的高分子量化合物则不受影响。获得了高达100％的悬浮固体保留（平均87％），并且该系统可以运行长达2周而没有明显的通量下降。

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