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首页> 外文OA文献 >Influence of fertilizer draw solution properties on the process performance and microbial community structure in a side-stream anaerobic fertilizer-drawn forward osmosis – ultrafiltration bioreactor
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Influence of fertilizer draw solution properties on the process performance and microbial community structure in a side-stream anaerobic fertilizer-drawn forward osmosis – ultrafiltration bioreactor

机译：侧流厌氧施肥正向渗透-超滤生物反应器中施肥溶液特性对工艺性能和微生物群落结构的影响

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In this study, a side-stream anaerobic fertilizer-drawn forward osmosis (FDFO) and ultrafiltration (UF) membrane bioreactor (MBR) hybrid system was proposed and operated for 55 days. The FDFO performance was first investigated in terms of flux decline with various fertilizers draw solution. Flux decline was very severe with all fertilizers due to the absence of aeration and the sticky property of sludge. Flux recovery by physical cleaning varied significantly amongst tested fertilizers which seriously affected biofouling in FDFO via reverse salt flux (RSF). Besides, RSF had a significant impact on nutrient accumulation in the bioreactor. These results indicated that nutrient accumulation negatively influenced the anaerobic activity. To elucidate these phenomena, bacterial and archaeal community structures were analyzed by pyrosequencing. Results showed that bacterial community structure was affected by fertilizer properties with less impact on archaeal community structure, which resulted in a reduction in biogas production and an increase in nitrogen content.
机译：在这项研究中，提出了一种侧流厌氧施肥正向渗透（FDFO）和超滤（UF）膜生物反应器（MBR）混合系统，并运行了55天。 FDFO性能首先根据各种肥料汲取溶液的通量下降进行了研究。由于没有通气和污泥的粘性，所有肥料的通量下降非常严重。在不同的试验肥料中，通过物理清洁回收的助焊剂差异很大，这些肥料通过反盐通量（RSF）严重影响了FDFO中的生物结垢。此外，RSF对生物反应器中的养分积累有重要影响。这些结果表明养分积累对厌氧活性产生负面影响。为了阐明这些现象，通过焦磷酸测序分析了细菌和古细菌的群落结构。结果表明，细菌群落结构受肥料特性的影响，对古细菌群落结构的影响较小，这导致沼气产量减少和氮含量增加。

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