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首页> 外文会议>Proceedings of the 7th international conference on environmental anaerobic technologies and bioenergy >Removal of Anaerobic Soluble Microbial Products (SMPs) in Biological Activated Carbon (BAC) System
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Removal of Anaerobic Soluble Microbial Products (SMPs) in Biological Activated Carbon (BAC) System

机译：去除生物活性炭（BAC）系统中的厌氧可溶性微生物产物（SMP）

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Effluents from biological wastewater treatment systems contain a large amount of soluble microbial products (SMPs), which are generally poorly biodegradable and may seriously affect the effluent quality. Focusing on the biodegradation of SMPs from anaerobic reactors, this study combined the biological activated carbon (BAC) into the anaerobic system, in order to improve the quality of the anaerobic effluent so as to meet the discharge standard. The results verified that 90% of the SMPs could be removed before the granular activated carbon (GAC) was saturated. And after the saturation, the SMP removal remained 60% on the average. The accumulative saturation adsorption of GAC over SMPs was approximately 0.28 gCOD/gC, while the continuous BAC reactor removed 0.52 gCOD/gC under the same conditions. This indicated that the main role of SMP removal was biodegradation after the GAC saturation. A strain of SMP-degrading bacteria was screened. The gene sequence was blasted and found to be highly similar to Klebsiella sp. After screening, the SMPdegrading Klebsiella was enriched and seeded back to the BAC reactor before the anaerobic reactors was restarted. The continuous running results clearly revealed the enhancement effect of the screened Klebsiella sp. Finally, when the influent COD was 10,000 mg/L and the OLR achieved 10 kgCOD/m3.d, the effluent from the BAC reactor could meet the discharge standard without further treatment.
机译：来自生物废水处理系统的废水中含有大量的可溶性微生物产品（SMP），这些产品通常很难生物降解，并可能严重影响废水质量。着重研究厌氧反应器中SMPs的生物降解，将生物活性炭（BAC）结合到厌氧系统中，以提高厌氧废水的质量，以达到排放标准。结果证明，在颗粒状活性炭（GAC）饱和之前，可以去除90％的SMP。饱和后，SMP去除率平均保持60％。 GAC在SMP上的累积饱和吸附约为0.28 gCOD / gC，而连续BAC反应器在相同条件下去除了0.52 gCOD / gC。这表明去除SMP的主要作用是GAC饱和后的生物降解。筛选了降解SMP的菌株。基因序列经过blast处理，发现与克雷伯氏菌高度相似。筛选后，将SMP降解的克雷伯菌富集并接种到BAC反应器中，然后重新启动厌氧反应器。连续的运行结果清楚地揭示了筛选的克雷伯菌属菌的增强作用。最后，当进水COD为10,000 mg / L且OLR达到10 kgCOD / m3.d时，BAC反应器的出水无需进一步处理即可达到排放标准。

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