Development of a sustainable process for nitrogen recovery from digested wastes

开发从消化废物中回收氮的可持续工艺

• 批准号: 518252-2017
• 负责人: Vaneeckhaute, Céline
• 金额: $ 1.82万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639447
• 关键词: Development; sustainable; process; nitrogen; recovery

The company Anaergia (ON, CA) has developed a process that allows to produce a nitrogen-rich mineralfertilizer from organic wastes. However, several bottlenecks currently hinder further widespreadimplementation of the technology. First, the process consumes significant amounts of sulfuric acid, which isnot attractive from an economic, environmental and social (safety) perspective. Second, waste characteristicsare highly variable in time and space. Hence, designing and operating the process to produce a consistentfertilizer and effluent quality at low cost from such dynamic complex waste matrix is challenging. Toovercome these bottlenecks, two work packages will be executed in this project. First, an innovative method tocapture the ammonia in a more sustainable way without the use of sulfuric acid will be developed, therebyexpanding the marketing potential of the company's technology. To this end, sustainable substitutes for the useof sulfuric will be tested at lab-scale. Second, the project will develop a simulation model that will allowoptimal design and control of the process for each specific case without the need for extensive experimentation.The model will also allow to optimize the operational settings of the process at variable feed conditions. Assuch, Anaergia will be able to reduce the investment and operational costs of its technology, increase theoperational performance and flexibility, and hence to become more competitive in the market place. At the endof the project, recommendations for a pilot-scale set-up will be provided to the company, and additionalfunding will be purchased for joint implementation of the pilot. On top of the economic benefits to Anaergia,the availability of a sustainable process for nitrogen recovery from organic wastes will result in significanteconomic, environmental and social benefits to Canada by facilitating the transition to a sustainable bio-basedeconomy.

Anaergia公司（ON，CA）开发了一种工艺，可以从有机废物中生产富氮矿物肥料。然而，目前有几个瓶颈阻碍了该技术的进一步推广。首先，该方法消耗大量的硫酸，这从经济、环境和社会（安全）角度来看是没有吸引力的。第二，废物的特征在时间和空间上变化很大。因此，设计和操作该工艺以从这种动态复杂的废物基质中以低成本生产一致的肥料和流出物质量是具有挑战性的。为了克服这些瓶颈，本项目将执行两个工作包。首先，将开发一种创新方法，以更可持续的方式捕获氨，而不使用硫酸，从而扩大公司技术的市场潜力。为此，将在实验室规模上测试硫酸的可持续替代品。第二，该项目将开发一个模拟模型，该模型将允许在不需要大量实验的情况下对每个特定情况进行优化设计和控制。该模型还将允许在可变进料条件下优化该过程的操作设置。因此，Anaergia将能够降低其技术的投资和运营成本，提高运营性能和灵活性，从而在市场上更具竞争力。在项目结束时，将向该公司提供试点规模的建议，并将购买额外的资金用于联合实施试点。除了对Anaergia的经济利益外，从有机废物中回收氮的可持续过程的可用性将通过促进向可持续生物经济的过渡，为加拿大带来显著的经济，环境和社会效益。