Developing a rapid start-up technology for a novel moving bed anammox biofilm reactor MBABR

开发新型移动床厌氧氨氧化生物膜反应器MBABR的快速启动技术

• 批准号: 514707-2017
• 负责人: Oleszkiewicz, Jan
• 金额: $ 1.34万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 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=661180
• 关键词: Developing; rapid; start; up; technology

The partial nitritation-anammox (PNA) process is an energy efficient option for nitrogen removal that has been developed for high temperature, high-nitrogen load industrial streams. The PNA process allows for removal of ammonia nitrogen, a toxic compound, and total nitrogen, a nutrient contributing to eutrophication of surface waters, without the use of expensive external carbon sources, and 60% less aeration requirements than conventional treatment. Thereby, PNA could increase cost-effectiveness of nitrogen removal by 30% and significantly reduce chemical requirements for total nitrogen removal. Implementation of PNA anammox for**Canadian municipal wastewaters would benefit communities faced with aging infrastructure and the need to upgrade to more stringent effluent nutrient limits. However, the PNA process has not yet been demonstrated as an effective treatment method for low temperature and low nitrogen concentration (40 mg N/L) municipal wastewaters typical of Canadian municipalities. Headworks-Bio, a Canadian vendor of moving bed biofilm reactors (MBBR) has been striving to expand into the anaerobic MBBR and was interested in development of an PNA bioreactor to answer the growing market. With unresolved problems associated with low temperature and low concentration systems, the project proposes solutions to the major issues preventing implementation of**PNA to Canadian municipal wastewaters: 1) rapid establishment of autotrophic biofilm, the microorganisms performing treatment, under low temperatures and low nitrogen loads; and 2) control mechanisms for prolonged process stability by preventing the establishment of undesirable microorganisms (nitrite oxidizers).

部分亚硝化-厌氧氨氧化 (PNA) 工艺是一种高效节能的脱氮工艺，专为高温、高氮负荷工业流而开发。 PNA 工艺可以去除氨氮（一种有毒化合物）和总氮（一种导致地表水富营养化的营养物质），无需使用昂贵的外部碳源，并且与传统处理相比，曝气需求减少 60%。因此，PNA 可以将脱氮成本效益提高 30%，并显着降低总脱氮的化学品需求。对**加拿大城市废水实施 PNA 厌氧氨氧化系统将使面临基础设施老化和需要升级到更严格的废水营养物限制的社区受益。然而，PNA 工艺尚未被证明是处理加拿大城市典型的低温、低氮浓度 (40 mg N/L) 城市废水的有效方法。 Headworks-Bio 是一家加拿大移动床生物膜反应器 (MBBR) 供应商，一直致力于进军厌氧 MBBR 领域，并有兴趣开发 PNA 生物反应器来满足不断增长的市场需求。针对与低温和低浓度系统相关的尚未解决的问题，该项目针对阻碍对加拿大城市废水实施**PNA的主要问题提出了解决方案：1）快速建立自养生物膜，即在低温和低氮条件下进行处理的微生物负载； 2) 通过防止不良微生物（亚硝酸盐氧化剂）的形成来延长过程稳定性的控制机制。