Effect of varying environmental conditions on the performance and stability of aerobic granular biomass treating dilute Canadian municipal wastewater

不同环境条件对好氧颗粒生物质处理稀释加拿大城市废水的性能和稳定性的影响

• 批准号: 477462-2014
• 负责人: Mavinic, Donald
• 金额: $ 2.53万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=578930
• 关键词: Effect; varying; environmental; conditions; performance

Aerobic Granular Biomass (AGB) is a relatively new development in the field of wastewater treatment and resource recovery. AGB is a result of a multitude of selective pressures inducing the selection of self-aggregating biomass, which results in granules greater than 0.2 mm in diameter. As a result, AGB is able to be quickly separated from the treated liquid stream (due to the fast settling velocity of the granules), and allows for a diverse microbial community to develop within the granules, thereby providing the ability for simultaneous removal of carbon, nitrogen, and phosphorus pollutants from wastewater. In practice, these benefits translate to a reduced operational footprint, significant energy savings, and lower capital investment. Currently lab-scale, pilot-scale, and full-scale implementations of the technology utilize sequencing batch reactors (SBRs) to treat high strength (600 to 1000 mg/L COD) synthetic, municipal, and industrial wastewater. In contrast, the wastewater seen in a Canadian context, is typically of lower strength (200 to 300 mg/L COD). The proposed objectives of this study are to 1) understand the effect of lower strength Canadian municipal wastewater on AGB system performance, 2) understand the effect of feeding configuration (plug flow vs. completely mixed) with Canadian municipal wastewater, and 3) construct and validate a conceptual continuous flow AGB system. The findings of this study will be vital for scale-up work for developing an AGB system capable of performing in a Canadian context.

好氧颗粒生物质（AGB）是废水处理和资源回收领域的一个较新的发展。AGB是多种选择压力诱导自聚集生物质选择的结果，导致颗粒直径大于0.2 mm。因此，AGB能够从处理过的液体流中快速分离（由于颗粒的快速沉降速度），并允许不同的微生物群落在颗粒内发展，从而提供同时去除废水中的碳，氮和磷污染物的能力。在实践中，这些好处转化为减少运营足迹、显著节约能源和降低资本投资。目前，该技术的实验室规模、中试规模和全面实施利用顺序间歇反应器（sbr）处理高强度（600至1000 mg/L COD）的合成、市政和工业废水。相比之下，在加拿大环境中看到的废水通常强度较低（COD为200至300 mg/L）。本研究提出的目标是：1)了解低强度加拿大城市污水对AGB系统性能的影响；2)了解加拿大城市污水的进料配置（塞流与完全混合）的影响；3)构建并验证概念上的连续流AGB系统。这项研究的结果对于开发能够在加拿大环境中执行的AGB系统的扩大工作至关重要。