Aerobic Granulation Membrane Bioreactor (AGMBR): Novel Wastewater Treatment and Reclamation Technology

好氧造粒膜生物反应器（AGMBR）：新型废水处理和资源化技术

• 批准号: RGPIN-2014-03946
• 负责人: Tay, JooHwa
• 金额: $ 1.75万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=566193
• 关键词: Aerobic; Granulation; Membrane; Bioreactor; AGMBR

The main objective of this project is the development of novel aerobic granulation membrane bioreactor (AGMBR) technology for wastewater treatment and reclamation. The AGMBR system integrates innovative aerobic granulation and membrane filtration technologies to achieve efficient and cost-effective treatment and reclamation of municipal and industrial wastewater. An AGMBR employs aerobic granules to biodegrade water pollutants and membrane filtration to separate the treated effluent from aerobic granules. Aerobic granulation is a recent innovation in biotechnological wastewater treatment processes and depends on the physiological capabilities of aerobic granules to break down the undesired pollutants in water and wastewater. The unique feature of the innovation is the cultivation of compact aerobic granular sludge developed from the self-aggregation of microbial cells in sequencing batch reactors. Aerobic granules have a number of advantages: a strong and compact structure, excellent settling ability, high biomass retention, rapid self-immobilization, high resilience to shock loadings and high endurance to chemical toxicity, as well as low sludge growth yield, high unit capacity of wastewater treatment and significant reductions in the reactor volume and space requirements. The use of an aerobic granulation biotechnological treatment system could result in significant cost savings for municipal and industrial wastewater treatment and provide better protection for the environment. Membrane bioreactor (MBR) is another innovation that integrates an activated sludge process with membrane technology for wastewater treatment and reclamation. MBR has many advantages: small footprint, high biomass retention, high effluent quality. However, MBR suffers a major drawback in fouling. During filtration of the activated sludge in MBR, fouling decreases the membrane permeability and thus treated water flux, which results in higher operational costs, higher energy consumption, difficulties in utilization, reduced operational flexibility, and frequent cleaning and replacement of membrane. In the AGMBR system, aerobic granules formation from flocs may prevent pore clogging of the membrane. Aerobic granules can also be used to attach the bacteria to granular surfaces rather than the membrane surface, which will eventually alleviate membrane biofouling. The proposed project will be the first pilot-scale AGMBR worldwide. The novel AGMBR technology will ultimately contribute to Canada’s efforts in environmental protection and sustainable development and can be exploited and deployed in other biological wastewater treatment facilities worldwide.

本项目的主要目标是开发新型好氧颗粒膜生物反应器（AGMBR）技术用于污水处理和回用。AGMBR系统集成了创新的好氧颗粒化和膜过滤技术，实现了城市和工业废水的高效和经济有效的处理和回收。AGMBR采用好氧颗粒生物降解水污染物和膜过滤分离处理后的出水从好氧颗粒。好氧颗粒化是生物技术废水处理工艺中的一项新技术，它依赖于好氧颗粒的生理能力来分解水和废水中的有害污染物。该创新的独特之处在于在序批式反应器中培养由微生物细胞自聚集而形成的致密好氧颗粒污泥。好氧颗粒污泥具有许多优点：结构坚固紧凑，沉降能力优异，生物量保留率高，自固定速度快，对冲击负荷的恢复力高，对化学毒性的耐受性强，污泥生长产率低，单位污水处理能力高，反应器体积和空间需求显著减少。使用好氧颗粒生物技术处理系统可以大大节省城市和工业废水处理的成本，并为环境提供更好的保护。膜生物反应器（MBR）是将活性污泥法与膜技术相结合用于废水处理和回收的另一项创新。MBR具有占地面积小、生物量截留率高、出水水质好等优点。然而，MBR在结垢方面具有主要缺点。膜生物反应器（MBR）中活性污泥过滤过程中，膜污染会降低膜的渗透性，从而降低处理水的通量，导致运行成本增加、能耗增加、利用困难、操作灵活性降低、膜的清洗和更换频繁。在AGMBR系统中，由絮凝物形成好氧颗粒可以防止膜的孔堵塞。好氧颗粒也可用于将细菌附着到颗粒表面而不是膜表面，这最终将减轻膜生物污染。该项目将是全球第一个中试规模的AGMBR。新的AGMBR技术将最终有助于加拿大在环境保护和可持续发展方面的努力，并可在全球其他生物废水处理设施中开发和部署。