Evaluation of cold-weather wastewater nitrification technology for removal of polar chemicals of emerging concern from rural wastewaters

寒冷天气废水硝化技术去除农村废水中新出现的极性化学物质的评估

• 批准号: 533254-2018
• 负责人: Wong, Charles
• 金额: $ 1.46万
• 依托单位: University of Winnipeg
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=668789
• 关键词: Evaluation; cold; weather; wastewater; nitrification

We are evaluating how a novel wastewater polisher, the Submerged Attached Growth Reactor (SAGR), can**remove polar chemicals of emerging concern (CECs) such as pharmaceuticals, personal care products, and**pesticides. SAGR is a technology developed by Nexom for improving wastewater treatment in small**communities using lagoon wastewater treatment technology. Lagoons often provide limited removal of**nutrients (nitrogen and phosphorus), suspended solids, biochemical demand, coliform bacteria, and other**traditional wastewater contaminants. Given increasingly more stringent wastewater standards, it is imperative**that effective but economical and easy-to-use treatment technologies be developed. SAGR consists of a**fully-aerated course gravel bed that is insulated. This promotes the growth of beneficial nitrifying bacteria that**remove ammonia under all weather conditions, especially cold temperatures in winter that limit bacterial**growth and therefore treatment efficiency. In previous tests, SAGR has been shown to be extremely effective**at removing traditional wastewater contaminants to levels below current Canadian standards. The bacterial**populations are also likely to remove polar CECs as well, which can also be a hazard to human and ecosystem**health and are beginning to be regulated in other jurisdictions. Our collaboration with Nexom will evaluate**SAGR at eliminating polar CECs at two model installations in Manitoba First Nations communities. This**work will help to improve water quality for the many Canadians living in rural communities with limited**infrastructure for wastewater treatment.

我们正在评估一种新型的废水净化器，即浸没式附着生长反应器（SAGR），如何能够 ** 去除新兴关注的极性化学品（CEC），如药品、个人护理产品和 ** 农药。SAGR是Nexom开发的一项技术，用于使用泻湖废水处理技术改善小型 ** 社区的废水处理。泻湖通常提供有限的去除 ** 营养物（氮和磷），悬浮固体，生化需求，大肠杆菌和其他 ** 传统的废水污染物。鉴于越来越严格的废水标准，必须开发有效但经济且易于使用的处理技术。SAGR由一个完全充气的砾石层组成。这促进了有益的硝化细菌的生长，这些细菌在所有天气条件下都能去除氨，特别是冬季的寒冷温度限制了细菌的生长，从而限制了处理效率。在以前的测试中，SAGR已被证明是非常有效的 ** 在消除传统的废水污染物的水平低于目前的加拿大标准。细菌种群也可能消除极性CEC，这也可能对人类和生态系统健康造成危害，并开始在其他司法管辖区受到监管。我们与Nexom的合作将评估 **SAGR在消除马尼托巴原住民社区两个模型装置的极地CEC方面的作用。这项工作将有助于改善许多生活在农村社区的加拿大人的水质，这些社区的废水处理基础设施有限。