Gil-Pulido Beatriz, Tarpey Emma, Almeida Eduardo L, Finnegan William, Zhan Xinmin, Dobson Alan D W, O'Leary Niall
School of Microbiology, University College Cork, College Road, Cork T12 YN60, Ireland.
Environmental Research Institute, University College Cork, Lee Road, Cork T23 XE10, Ireland.
Biotechnol Rep (Amst). 2018 Jun 5;19:e00263. doi: 10.1016/j.btre.2018.e00263. eCollection 2018 Sep.
Dairy processing generates large volumes of wastewater that require extensive nutrient remediation prior to discharge. Significant commercial opportunities exist therefore for cost-effective biotechnologies capable of achieving this requirement. In this study the authors evaluated the use of intermittently aerated sequencing batch reactors, (IASBRs), as a single-tank biotreatment system for co-removal of COD, nitrogen and phosphorus from synthetic dairy processing wastewater. Variation of the IASBR aeration rates, (0.8, 0.6 and 0.4 L/min), had significant impacts on the respective nutrient removal efficiencies and underlying microbial diversity profiles. Aeration at 0.6 L/min was most effective and resulted in >90% co-removal of orthophosphate and ammonium. 16S rRNA based pyrosequencing of biomass DNA samples revealed the family was notably enriched (>80% relative abundance) under these conditions. predictive metabolic modelling also identified as the major contributor of several known genes for nitrogen and phosphorus assimilation ().
乳制品加工会产生大量废水，这些废水在排放前需要进行大量的营养物修复。因此，对于能够满足这一要求的具有成本效益的生物技术来说，存在着重大的商业机会。在本研究中，作者评估了间歇曝气序批式反应器（IASBR）作为一种单池生物处理系统，用于从合成乳制品加工废水中协同去除化学需氧量（COD）、氮和磷的效果。IASBR曝气速率（0.8、0.6和0.4升/分钟）的变化对各自的营养物去除效率和潜在的微生物多样性概况有显著影响。以0.6升/分钟的速率曝气最为有效，导致正磷酸盐和铵的协同去除率超过90%。基于16S rRNA的生物质DNA样本焦磷酸测序显示，在这些条件下，[具体菌属]科显著富集（相对丰度>80%）。预测性代谢模型还确定[具体菌属]是几个已知的氮和磷同化基因的主要贡献者（[具体基因名称]）。
