The relationship between membrane and foulant in filtration of high DOC and hardness waters

高DOC和硬度水过滤中膜与污染物的关系

• 批准号: 490884-2015
• 负责人: Gorczyca, Beata
• 金额: $ 1.27万
• 依托单位: University of Manitoba
• 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=618164
• 关键词: relationship; between; membrane; foulant; filtration

Many water facilities in Canada are not able to meet the regulations governing potentially carcinogenic chlorine disinfection by-products- Trihalomethanes (THMs). Nanofiltration has become widely used in potable water treatment as a method that can meet increasingly stringent water quality regulations and THMs standards. However, a major problem with this approach is nanofilter fouling, which is loosely defined as the loss of performance and increase in plant operation cost due to formation of undesirable deposits (i.e. fouling layer) on the membrane surface. Many surface water sources, especially in the Canadian Prairies, contain major membrane foulants in high concentrations. Therefore, understanding the mechanisms of fouling and fouling control is of utmost interest to the designers and owners of water treatment systems located in this region. The overall objective of the proposed research is to control membrane fouling and significantly reduce operating costs of membrane systems by increasing their operational life. This project is a part of a global strategy to improve water quality and decrease THMs by the use of membrane technology. In this proposal, I will address this objective by investigating the relationship between the membrane and foulant using new membrane autopsy methods that are applicable to membranes used for filtration of challenging surface waters. Determining the mechanism of membrane filter fouling will support the partner on this grant (WSP Canada Inc.) in development of strategies that increase filter life, which will result in millions of dollars in savings each year to another partner on this grant (Pembina Valley Water Coop.) and other municipalities. Currently, owners of Canadian plants operating on waters most challenging to membrane filtration consult with international companies on membrane autopsies and methods to control membrane fouling. Two M.Sc. and two undergraduate students will be trained during this research. These students will obtain a unique set of skills that is urgently needed in the Canadian water treatment industry, particularly in applications where membranes are being used to produce drinking water.

加拿大的许多水设施无法满足有关潜在致癌的氯消毒副产物-三卤甲烷（THMs）的法规。纳滤作为一种能够满足日益严格的水质法规和THMs标准的方法，在饮用水处理中得到了广泛的应用。然而，这种方法的一个主要问题是纳米过滤器的污染，它被粗略地定义为由于在膜表面形成不良沉积物（即污染层）而导致性能损失和工厂运行成本增加。许多地表水源，特别是在加拿大大草原，含有高浓度的主要膜污染物。因此，了解污垢和污垢控制的机制是位于该地区的水处理系统的设计者和所有者最感兴趣的。本研究的总体目标是通过延长膜系统的使用寿命来控制膜污染，并显著降低膜系统的运行成本。该项目是通过使用膜技术改善水质和减少THMs的全球战略的一部分。在本提案中，我将通过使用适用于过滤具有挑战性的地表水的膜的新膜解剖方法来研究膜和污染物之间的关系来解决这一目标。确定膜过滤器污染的机制将支持该资助的合作伙伴（WSP Canada Inc.）制定延长过滤器寿命的策略，这将为该资助的另一个合作伙伴（Pembina Valley Water Coop.）和其他市政当局每年节省数百万美元。目前，在膜过滤最具挑战性的水域运营的加拿大工厂的所有者向国际公司咨询膜解剖和控制膜污染的方法。本次研究将培养两名硕士和两名本科生。这些学生将获得加拿大水处理行业急需的一套独特的技能，特别是在使用膜生产饮用水的应用中。