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首页> 外文期刊>African Journal of Biotechnology >Treatment of domestic wastewater by anaerobic denitrification: Influence of the type of support media on the production of extracellular polymer substances
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Treatment of domestic wastewater by anaerobic denitrification: Influence of the type of support media on the production of extracellular polymer substances

机译：厌氧反硝化处理生活污水：载体类型对细胞外聚合物物质生产的影响

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摘要

Eighteen Erlenmeyer flask containing six different support media [pozzolan, polyvinyl chloride1 (PVC1), polyvinyl chloride2 (PVC2), foam, polyethylene terephthalate (PET) and polystyrene (PS)] were subject to identical volumetric organic loadings and hydraulic retention time in treating synthetic protein ± carbohydrate waste. The objective was to examine the influence of support media on performance of anaerobic denitrification and retention and their resulting impact on system performance and failure. According to the results relative to every control support media, it was noticed that the best support media were the ones in PVC1 and PVC2, with successive reduction rates of 68.33 and 61.93% for chemical oxygen demand (COD), and 55 and 49% for nitrate. On the other hand, in two submerged anaerobic biofilter reactor packed with the support media of PVC1 and PVC2, the reactor with PVC1 media exhibited 89.93% COD and 78.75% nitrate removal efficiency attributable to its higher production of EPSp and EPSc.
机译：包含六个不同支持介质[火山灰，聚氯乙烯（PVC1），聚氯乙烯2（PVC2），泡沫，聚对苯二甲酸乙二酯（PET）和聚苯乙烯（PS）]的18个锥形烧瓶在处理合成纤维时要承受相同的体积有机负荷和水力停留时间蛋白质±碳水化合物浪费。目的是检查支持介质对厌氧反硝化和保留性能的影响，以及它们对系统性能和故障的影响。根据相对于每种控制支持介质的结果，注意到最好的支持介质是PVC1和PVC2中的介质，化学需氧量（COD）的连续减少率分别为68.33和61.93％，而化学需氧量的连续减少率分别为55和49％硝酸盐另一方面，在两个装有PVC1和PVC2支撑介质的潜水式厌氧生物滤池反应器中，具有PVC1介质的反应器显示出89.93％的COD和78.75％的硝酸盐去除效率，这归因于其较高的EPSp和EPSc产量。

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