Towards online optimal coagulation for DBP reductions**

实现在线最佳凝血以降低 DBP**

• 批准号: 537779-2018
• 负责人: RODRIGUEZ, MANUEL
• 金额: $ 1.82万
• 依托单位: Université Laval
• 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=663573
• 关键词: Towards; online; optimal; coagulation; DBP

This project aims at exploring the applicability of PeCOD® to drinking water quality control. The PeCOD®**measures photocurrent charge originating from the oxidation of organic species contained in a sample to**quantify organic matter. The PeCOD® measures the total soluble chemical oxigen demand (COD) from the**naturally occurring organic matter in water and has thus the potential to serve as surrogate for DBPs. Coupled**with the capability of continuous measurements, PeCOD® can be used as a relatively simple, fast, and low-cost**surrogate, opening the possibility for proactive real-time management of disinfection by-products (DBPs). The**objective of this project is to conduct a proof-of-concept study in the drinking water area, in particular the**control of DBPs by optimizing coagulation for organic matter removal. PeCOD® analyses will be coupled to**common coagulation control variables to estimate trihalomethanes (THMs) and haloaceteic acid (HAA)**formation. Different type of surface waters with varying organic matter quantities and types will be sampled**and submitted to various chlorination conditions. The coagulated and filtered waters will be followed by DBP**formation potential assays to determine resulting THMs, HAAs, and other non-regulated DBPs from the tested**waters. PeCOD® coupled with measurements of ultraviolet absorbance at 254 nm wavelength (UVA254),**could give further information on the nature of the organic matter (not just its quantification) through an**alternative specific UVA254 indicating characteristics such as hydrophobicity, molecular weight, and ease of**removal by coagulation. Such qualitative assessment is key to the better control and estimation of resulting**DBPs. This project will result in a unique and highly-resolved dataset of water qualities, coagulation**conditions, and resulting DBPs as a function of the PeCOD® precursor analysis.

该项目旨在探索PeCOD®在饮用水质量控制中的适用性。PeCOD®** 测量样品中有机物质氧化产生的光电流电荷，从而 ** 量化有机物质。PeCOD®测量水中 ** 天然存在的有机物的总可溶性化学需氧量（COD），因此有可能作为DBP的替代品。再加上 ** 连续测量的能力，PeCOD®可用作相对简单、快速和低成本的 ** 替代品，为主动实时管理消毒副产物（DBP）提供了可能性。本项目的 ** 目标是在饮用水领域进行概念验证研究，特别是通过优化混凝去除有机物来控制消毒副产物。PeCOD®分析将与 ** 常见的凝血控制变量结合，以估计三卤甲烷（THM）和卤乙酸（HAA）** 的形成。将对有机物数量和类型各不相同的不同类型地表沃茨进行取样 **，并将其置于各种氯化条件下。凝结和过滤后的沃茨将进行DBP** 形成潜力分析，以确定测试 ** 沃茨产生的THMs、哈斯和其他非管制DBP。PeCOD®结合254 nm波长下的紫外线吸光度（UVA 254）测量，** 可通过 ** 替代的特定UVA 254提供关于有机物性质的进一步信息（不仅仅是其定量），该UVA 254指示诸如疏水性、分子量和易于通过凝聚去除 ** 等特性。这种定性评估是更好地控制和估计所产生的消耗臭氧潜能值的关键。该项目将产生一个独特的高分辨率水质数据集，混凝 ** 条件，以及作为PeCOD®前体分析功能的DBPs。