Development of an innovative nitrogen removal process

开发创新的脱氮工艺

• 批准号: 488336-2015
• 负责人: Lee, HyungSool
• 金额: $ 1.82万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 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=586207
• 关键词: Development; innovative; nitrogen; removal; process

Nitrogen standards in wastewater effluent are currently based on free ammonia, although oxidized forms of nitrogen species (e.g., nitrite or nitrate) adversely affect aquatic animals and human. To better protect aquatic ecosystems and human health against the oxidized nitrogen compounds in wastewater, several cities or provinces have started strengthening nitrogen standards with total nitrogen. These strict nitrogen standards based on total nitrogen need supplemental processes into existing aerobic wastewater treatment plants (e.g., domestic wastewater treatment facilities): denitrification processes. Denitrification that typically uses methanol as external carbon source is an expensive process, due to continuous supply of the chemical. Moreover, anaerobic treatment processes often used for industrial wastewater will need a complete set of nitrification and denitrification, requiring more substantial costs for nitrogen control in the wastewater. The goal of the proposed research is to develop an innovative, economical nitrogen removal process for providing cleaner water sustainably. This project can help an industry partner to initiate development of a new, economical nitrogen removal process on one hand. On the other hand, successful development of this technology can improve human health and the clean water environment for Canada in sustainable fashions.

废水流出物中的氮标准目前基于游离氨，尽管氮物质的氧化形式（例如，亚硝酸盐或硝酸盐）对水生动物和人类有不利影响。为了更好地保护水生态系统和人类健康免受废水中氧化态氮化合物的影响，一些城市或省份已开始加强总氮的氮标准。这些基于总氮的严格的氮标准需要对现有的好氧废水处理厂进行补充处理（例如，生活污水处理设施）：脱氮工艺。通常使用甲醇作为外部碳源的反硝化是一个昂贵的过程，因为化学品的连续供应。此外，通常用于工业废水的厌氧处理工艺将需要一套完整的 硝化和反硝化，需要更大的成本来控制废水中的氮。拟议研究的目标是开发一种创新的，经济的脱氮工艺，可持续地提供更清洁的水。该项目一方面可以帮助行业合作伙伴启动新的经济脱氮工艺的开发。另一方面，这项技术的成功开发可以以可持续的方式改善加拿大的人类健康和清洁水环境。