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: 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=618192
• 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.

含氮、磷废水未经处理会引起河湖水体富营养化，导致藻类大量生长，水体含氧量降低。为了防止水体富营养化，保护饮用水水源，必须对污水进行脱氮除磷处理。活性污泥生物脱氮系统是污水生物脱氮的核心技术。然而，在加拿大，这些类型的系统在寒冷的冬季和高流量（融雪）季节在氨去除方面经常受到损害。所提出的研究将评估固定和移动的生物膜培养基添加的有效性（即，IFAS系统）与现有的活性污泥生物反应器相结合，在寒冷的冬季和高流量条件下显著增强了生物营养物的去除。固定和移动的生物膜支持介质将在两个中试规模的生物反应器中分别进行评价，这些生物反应器在埃德蒙顿市的EPCOR金条污水处理厂运行，以实现最佳的营养物去除效率。本研究的结果将决定适当的媒体，以升级一个全面的现有的生物脱氮除磷系统，并将提供一个参考，在未来的全面测试。这种处理将为加拿大带来重大的经济和环境效益。参加该CRD计划的高素质人员将获得学术和工业知识和经验，这将加强阿尔伯塔和加拿大在废水处理管理方面的能力。