Aerated granules for carbon, nitrogen and phosphorous removal using a bench scale sequencing batch reactor

使用小型序批式反应器去除碳、氮和磷的曝气颗粒

• 批准号: 486523-2015
• 负责人: Basu, Onita
• 金额: $ 1.82万
• 依托单位: Carleton University
• 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=585659
• 关键词: Aerated; granules; carbon; nitrogen; phosphorous

Wastewater treatment in Canada is currently undergoing a period of revision wherein stricter regulations have come into force or will come into force over the next several years. Specifically, industrial wastewater, in particular food and beverage wastewater, is characterise by high ammonia and phosphorous concentrations Both ammonia and phosphorous cause deleterious impacts on the receiving aquatic systems; ammonia results in both acute and chronic toxicity issues, including fish death, and phosphorous leads to eutrophication that may results in algae blooms, loss of dissolved oxygen with the potential for fish death as a results as well. The food and beverage industry produce effluents with high carbon, total nitrogen and phosphorous concentrations. The high concentration of carbon, nitrogen, phosphorous and the ammonium nitrogen (60 to 270 mg/L) could cause considerable toxic effects to aquatic life and might pose the risk of eutrophication. Biological treatment is the most common and economical means of carbon and ammonia removal from wastewater in Canada and throughout the world. However, conventional suspended growth aerobic or anaerobic biological treatment systems might not be capable of treating food and beverage industry wastewater with the these high carbon:nitrogen:phosphorous ratios. An aerobic granular sludge processes has the potential capacity to treat high organic loading rates and simultaneously removes nutrient through nitrification, denitrification and microbial phosphorous accumulation in a single reactor; however the application of this innovative technology to treat the food and beverage wastewater is not fully explored. In particular information on the start-up operation and performance of aerobic granules in the food and beverage wastewater is scarce. Thus, this research project is aimed at providing environmentally sustainable wastewater treatment options by investigating the aerated granular SBR startup operation, removal rates of carbon, nitrogen and phosphorous to develop a strategy for the development and maintenance of stable aerated granules for nutrient removal at the lab scale with future collaborative work aimed at pilot scale testing.

加拿大的废水处理目前正处于修订阶段，其中更严格的法规已经生效或将在未来几年内生效。具体而言，工业废水，特别是食品和饮料废水，被高氨和磷浓度所污染。氨和磷都对接收的水生系统造成有害影响;氨导致急性和慢性毒性问题，包括鱼类死亡，而磷导致可能导致藻类大量繁殖的富营养化，溶解氧的损失也可能导致鱼类死亡。食品和饮料行业产生的废水含碳、总氮和磷浓度很高。高浓度的碳、氮、磷和铵态氮（60至 270 mg/L）对水生生物有明显的毒性作用，并可能造成水体富营养化的危险。生物处理是加拿大和世界各地从废水中去除碳和氨的最常见和最经济的方法。然而，传统的悬浮生长好氧或厌氧生物处理系统可能无法处理具有这些高碳：氮：磷比的食品和饮料工业废水。好氧颗粒污泥工艺具有处理高有机负荷率的潜在能力，并且在单个反应器中通过硝化、反硝化和微生物磷积累同时去除营养物;然而， 处理食品和饮料废水的创新技术尚未得到充分开发。特别是关于好氧颗粒在食品和饮料废水中的启动操作和性能的信息很少。因此，本研究项目旨在通过调查曝气颗粒SBR的启动操作，碳，氮和磷的去除率，以提供环境可持续的污水处理方案，以制定一项战略，用于开发和维护稳定的曝气颗粒，用于在实验室规模的营养物去除，未来的合作工作旨在进行中试规模的测试。