JST - Innovative UV technologies for the removal of emerging contaminants and sustainable water supplies in small communities

在日本和加拿大的一些顶级饮用水工程师/研究人员之间，拟议的合作研究涉及旨在解决加拿大和日本小型和农村社区面临的问题和挑战的互补项目。拟议的研究将侧重于：(i)表征受藻华影响的地表水来源（加拿大队）、评估藻类毒素造成的健康风险（加拿大队）和微生物污染（日本队）；（ii）应用新型和新兴的基于紫外线的技术来灭活病原体（两个团队），减少DBP的形成（日本团队），降解藻类毒素和味道和气味化合物（加拿大团队）；（iii）将UV工艺的性能与更传统的技术进行比较，并评估其在水处理系统中的整合情况（两个团队）。加拿大研究人员的具体工作包括对加拿大各地受藻华影响的一些地表水水源进行表征，以确定蓝藻毒素的数量和类型。将进行实验规模的研究，以评估基于紫外线的高级氧化工艺的有效性，并为一系列蓝藻毒素和藻类产生的味道和气味化合物的降解制定设计标准。天然水华样品将用于评估蓝藻代谢产物的降解，以及在水华挑战条件下消毒过程性能的影响。将特别强调新兴的紫外发光二极管和真空紫外氧化工艺，以及它们与更成熟的技术的比较。输出/交付成果：创新的UV技术（真空UV和LED-UV），以及这些技术与其他竞争工艺的详细比较。影响：拟议的项目将产生新的/改进的技术，这些技术在能源使用、维护和操作方面可能比目前的方法更具可持续性和有效性。

The proposed collaborative research, among some of Japan and Canada's top drinking water engineers/researchers, involves complementary projects which aim to address issues and challenges facing both Canadian and Japanese small and rural communities. The proposed research will focus on: (i) characterization of surface water sources affected by algal blooms (Canadian team), assessment of health risk due to algal toxins (Canadian team) and microbial contamination (Japanese team); (ii) application of novel and emerging UV based technologies to inactivation of pathogens (both teams), reduction of DBP formation (Japanese team), and degradation of algal toxins and taste & odour compounds (Canadian team); and (iii) comparing the performance of UV processes against more conventional technologies and evaluating their integration within a water treatment train (both teams). The specific work of the Canadian researchers involves characterization of a number of surface water sources affected by algal blooms across Canada, to quantity the presence and types of cyanotoxins. Bench scale studies will be conducted to evaluate the effectiveness of UV-based advanced oxidation processes and to develop design criteria for the degradation of a suite of cyanotoxins and algal produced taste & odour compounds. Natural bloom samples will be used to evaluate the degradation of the cyanobacteria metabolites in addition tothe impact of disinfection process performance under bloom-challenged conditions. Particular emphasis will be given to emerging UV-light emitting diodes and vacuum UV oxidation processes, and their comparison with more established technologies. Outputs/deliverables: Innovative UV-based technologies (vacuum UV and LED-UV), as well as a detailedcomparison of these technologies with other competing processes. Impacts: The proposed project results in new/improved technologies that would be potentially more sustainable and effective than current approaches in terms of energy use, maintenance, and operation.