The role of treatment processes in achieving drinking water biostability

研究挑战：中心研究挑战是提高饮用水中可同化有机碳(AOC)的测量效率。出于几个原因，这一点至关重要。首先，对AOC水平的准确了解有助于深入了解饮用水的细菌再生长潜力，并对安全、基础设施维护和客户满意度产生影响。现有的AOC测量方法复杂、耗时，而且目前的替代测量方法在不同的水处理方法中的适用性有限。我们不知道的是：目前，还不清楚已报道的AOC测量指标在各种治疗方案中是否保持其准确性。此外，影响这些替代测量的具体物理化学机制还没有完全了解。方法：-进行全面的传统文献回顾，以建立对AOC测量和可用代用品的当前状态的基础性理解。-将建议的AOC代理参数与传统方法进行实验比较，以确定其局限性。-研究氧化处理过程中AOC的物理化学变化。-测试各种混凝剂，以了解它们在降低AOC水平方面的有效性，并确定AOC前体的潜在替代品。影响：该项目旨在创建更有效的AOC测量方法，从而使英国和国际上的自来水公司能够更好地监测和缓解细菌再生长的挑战。这一成果将使决策者和实践者拥有更及时和更容易获得的基础设施管理和水质保证工具。考虑到对水的日益增长的需求和气候变化带来的复杂情况，这项研究对水系统的弹性和公共卫生具有重大的全球影响。

Research Challenge: The central research challenge is to improve efficiency of measuring Assimilable Organic Carbon (AOC) in drinking water. This is crucial for several reasons. First, an accurate understanding of AOC levels provides insight into bacterial regrowth potential of drinking water, with implications for safety, infrastructure maintenance, and customer satisfaction. Existing methods to measure AOC are complex, time-consuming, and current proxy measurements are limited in their applicability across diverse water treatment methods. What Don't We Know: Currently, it is unclear whether the reported proxies for AOC measurement maintain their accuracy across various treatment trains. Furthermore, the specific physicochemical mechanisms affecting these proxy measurements are not fully understood. Methodology:-Conduct a comprehensive traditional literature review to establish a foundational understanding of the current state of AOC measurement and available proxies. -Experimentally compare proposed AOC proxy parameters with traditional methods to determine their limitations. -Investigate the physicochemical changes in AOC through oxidative treatment. -Test various coagulants to understand their effectiveness in reducing AOC levels and to identify potential proxies for AOC precursors. Impact:This project aims to create more efficient methods for AOC measurement, thereby enabling water utilities, both in the UK and internationally, to better monitor and mitigate bacterial regrowth challenges. The outcome will equip decision-makers and practitioners with more timely and accessible tools for infrastructure management and water quality assurance. Given the increasing demand for water and the complications introduced by climate change, this research holds significant global implications for the resiliency of water systems and public health.