Optimization of fouling control in submerged hollow fiber membrane systems

浸没式中空纤维膜系统结垢控制的优化

• 批准号: 413062-2011
• 负责人: Bérubé, Pierre
• 金额: $ 2.42万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=491422
• 关键词: Optimization; fouling; control; submerged; hollow

Ultrafiltration membranes are increasingly being used for water and wastewater treatment applications because of their ability to effectively remove many contaminants of interest. However, the retained contaminants can accumulate and foul a membrane surface, increasing the resistance to the permeate flow. To date, limited fundamental knowledge exists regarding the mechanisms governing fouling. As a result, existing commercial membrane systems are designed and operated based largely on a trial-and-error approach using pilot testing to identify the operating conditions. In addition to being capital and time intensive, this approach does not ensure that the conditions that minimize power consumption for fouling control and maximize operating lifetime of membranes are identified. This has limited the widespread application of membrane systems, especially for small and remote communities that do not have access to the capital or expertise to design and/or operate membrane systems. In partnership with engineers at GE Water and Process Technologies (GE), researchers at the University of British Columbia (UBC) propose to develop the fundamental knowledge necessary to optimize the design and operation of air sparged submerged hollow fiber membrane systems without having to extensively rely on the currently used trial-and-error empirical approach. The outcome from the proposed research would be the development of new air sparging equipment and approaches to optimize the removal of hydraulically reversible fouling and procedures to quantify the effects of chemical cleaning agents and approaches on the operating lifetime of membrane systems.

超滤膜越来越多地用于水和废水处理应用，因为它们能够有效地去除许多感兴趣的污染物。然而，残留的污染物会积聚并污染膜表面，增加渗透流动的阻力。迄今为止，关于控制结垢机制的基本知识有限。因此，现有的商业膜系统的设计和操作主要基于试错方法，通过中试测试来确定操作条件。除了资金和时间密集之外，这种方法并不能确保最小化污染控制的功耗和最大化膜的使用寿命。这限制了膜系统的广泛应用，特别是对于那些没有资金或专业知识来设计和/或操作膜系统的小型和偏远社区。英属哥伦比亚大学（UBC）的研究人员与GE水处理技术公司（GE）的工程师合作，提出开发必要的基础知识，以优化空气充气水下中空纤维膜系统的设计和操作，而不必广泛依赖目前使用的试错经验方法。拟议研究的结果将是开发新的空气喷射设备和方法，以优化去除水力可逆污垢的方法，以及量化化学清洗剂和方法对膜系统使用寿命的影响的程序。