PDF(Pubmed)
Abstract：
The escalating proliferation of cyanobacteria poses significant taste and odor (T/O) challenges, impacting freshwater ecosystems, public health, and water treatment costs. We examined monthly variations in four T/O compounds from September 2011 to August 2012 in Chaohu Lake\'s eastern drinking water source (DECL). More importantly, we compared the reported T/O occurrence and the related factors in freshwater bodies worldwide. The assessment of T/O issues indicated a severe and widespread problem, with many cases surpassing odor threshold values. Remarkably, China reported the highest frequency and severity of odor-related problems. A temporal analysis revealed variations in odor occurrences within the same water body across different years, emphasizing the need to consider high values in all seasons for water safety. Globally, T/O issues were widespread, demanding attention to variations within the same water body and across different layers. Algae were crucial contributors to odor compounds, necessitating targeted interventions due to diverse odorant sources and properties. A correlation analysis alone lacked definitive answers, emphasizing the essential role of further validation, such as algae isolation. Nutrients are likely to have influenced the T/O, as GSM and MIB correlated positively with nitrate and ammonia nitrogen in DECL, resulting in proposed control recommendations. This study offers recommendations for freshwater ecosystem management and serves as a foundation for future research and management strategies to address T/O challenges.
摘要：
蓝藻不断升级的增殖带来了显著的味道和气味(T/O)挑战，影响淡水生态系统，公共卫生,水处理费用。研究了2011年9月至2012年8月巢湖东部饮用水源（DECL）4种T/O化合物的月度变化。更重要的是,我们比较了全球淡水水体中报告的T/O发生情况及其相关因素。对T/O问题的评估表明，这是一个严重而普遍的问题，许多情况下超过气味阈值。值得注意的是,中国报告了与气味有关的问题的频率和严重程度最高。时间分析显示，同一水体中不同年份的气味发生变化，强调需要在所有季节考虑高价值的水安全。全球范围内,T/O问题普遍存在，要求注意同一水体内和不同层的变化。藻类是气味化合物的关键贡献者，由于气味来源和性质不同，因此需要有针对性的干预措施。仅相关分析就缺乏明确的答案，强调进一步验证的重要作用，如藻类隔离。营养素可能会影响T/O，由于GSM和MIB与DECL中的硝酸盐和氨氮呈正相关，产生了拟议的控制建议。这项研究为淡水生态系统管理提供了建议，并为未来的研究和管理策略提供了基础，以应对T/O挑战。
