Municipal biological nutrient removal bioreactor upgrade using integrated fixed-film activated sludge (IFAS): Pilot scale investigation

使用集成固定膜活性污泥（IFAS）升级市政生物脱氮生物反应器：中试规模研究

• 批准号: 479712-2015
• 负责人: Liu, Yang
• 金额: $ 3.64万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 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=580231
• 关键词: Municipal; biological; nutrient; removal; bioreactor

Untreated wastewater containing nitrogen and phosphorus can cause eutrophication which extends algae growth and decreases oxygen concentration in river and lake. To prevent eutrophication and conserve drinking water source, nitrogen and phosphorus should be removed from wastewater. Biological nutrient removal (BNR) systems using activated sludge are the core technology of the biological wastewater treatment process for ammonia removal. However, these types of systems are often compromised in Canada during cold winter and high flow (snow melting) seasons in terms of ammonia removal. The proposed study will evaluate the effectiveness of fixed and mobile biofilm media addition (i.e., IFAS systems) to the existing activated sludge bioreactors for significantly enhanced biological nutrient removal under cold winter and high flow conditions. Fixed and mobile biofilm support media will be evaluated separately in two pilot scale bioreactors that are operated to achieve optimal nutrient removal efficiency at the EPCOR Gold Bar Wastewater Treatment Plant in the City of Edmonton. The results of this research will determine the appropriate media to upgrade a full-scale existing biological nutrient removal system, and will provide a reference for full-scale testing in the future. Such treatment will provide significant economic and environmental benefits to Canada. The highly qualified personnel participating in this CRD Program will obtain academic and industrial knowledge and experience that will strengthen Alberta's and Canada's capacities in wastewater treatment management.

未经处理的含氮和磷废水会导致富营养化，从而延长藻类生长并降低河流和湖泊中的氧气浓度。 为了防止富营养化并保护饮用水源，应去除废水中的氮和磷。使用活性污泥的生物营养去除（BNR）系统是去除氨废水生物处理工艺的核心技术。然而，在加拿大寒冷的冬季和高流量（融雪）季节，这些类型的系统在氨去除方面经常受到损害。 拟议的研究将评估向现有活性污泥生物反应器添加固定和移动生物膜介质（即 IFAS 系统）的有效性，以显着增强寒冷冬季和高流量条件下的生物营养物去除。固定和移动生物膜支持介质将在埃德蒙顿市 EPCOR Gold Bar 废水处理厂的两个中试规模生物反应器中分别进行评估，以实现最佳的营养物去除效率。 这项研究的结果将确定合适的介质来升级现有的生物营养去除系统，并为未来的全面测试提供参考。这种处理将为加拿大带来显着的经济和环境效益。参与该 CRD 计划的高素质人员将获得学术和工业知识和经验，这将加强艾伯塔省和加拿大的废水处理管理能力。