Advancing aerobic granular sludge for sustainable wastewater treatment

推进好氧颗粒污泥实现可持续废水处理

• 批准号: 530270-2018
• 负责人: Ziels, Ryan
• 金额: $ 1.82万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 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=669925
• 关键词: Advancing; aerobic; granular; sludge; sustainable

Currently, a paradigm shift is underway in which wastewater treatment is being viewed as an opportunity to**sustainably recover nutrients, bioenergy, and clean water, all while protecting human and environmental health.**Several wastewater treatment plants operated by the Greater Vancouver Sewerage and Drainage District (Metro**Vancouver) are due for infrastructure upgrades in the coming decade. To meet sustainability objectives, Metro**Vancouver is seeking to implement new approaches to recover energy and nutrients from liquid wastewater as**part of their Integrated Liquid Waste and Resource Management Plan. Aerobic granular sludge (AGS) is an**emerging biological treatment technology that can significantly reduce land footprints of wastewater treatment**plants, and thus is a potential biotechnology to provide secondary treatment of Metro Vancouver's wastewater.**Yet, conventional AGS is an energy-consuming process, and can contribute to greenhouse gas emissions. To**assist with Metro Vancouver's resource recovery goals, this project will examine a new application of AGS**technology that incorporates microalgae to reduce energy costs while also sequestering carbon dioxide and**nutrients. This research will provide new understanding on the potential of algal-based AGS for sustainable**treatment of Metro Vancouver's domestic wastewater by: (1) evaluating the optimal strategy to promote the**co-cultivation of microalgae within AGS; (2) identifying optimal bioreactor operating strategies to improve**biological nutrient removal by the algal-AGS system; and (3) estimating potential energy savings for**wastewater treatment from reduced aeration costs with the co-cultivation of microalgae into AGS. The**outcomes of this research will provide a basis to inform strategies for scaling-up the new algal-AGS process for**sustainable bioenergy and nutrient recovery at Metro Vancouver's future wastewater treatment plants.

目前，正在进行一种范式转变，废水处理被视为可持续地回收营养物质、生物能源和清洁水的机会，同时保护人类和环境健康。大温哥华污水和排水区（大温哥华）运营的几个污水处理厂将在未来十年进行基础设施升级。为了实现可持续发展目标，温哥华地铁 ** 正在寻求实施新的方法，从液体废水中回收能量和营养物质，作为其综合液体废物和资源管理计划的一部分。好氧颗粒污泥（AGS）是一种新兴的生物处理技术，可以显着减少污水处理厂的土地足迹，因此是一种潜在的生物技术，为温哥华的污水提供二级处理。然而，传统的AGS是一个耗能的过程，并可能导致温室气体排放。为了协助温哥华地铁的资源回收目标，该项目将研究AGS** 技术的新应用，该技术结合微藻以降低能源成本，同时还隔离二氧化碳和营养物质。本研究将通过以下几个方面对藻类-AGS系统在大温哥华地区生活污水可持续处理中的潜力提供新的认识：（1）评估促进AGS中微藻共培养的最佳策略;（2）确定最佳生物反应器操作策略，以提高藻类-AGS系统对生物营养物的去除;以及（3）估算通过将微藻共培养成AGS来降低曝气成本从而为 ** 废水处理节省的潜在能量。这项研究的 ** 结果将提供一个基础，为扩大新的藻类-AGS工艺的战略，** 可持续的生物能源和营养物质回收在大温哥华的未来污水处理厂。