供水管网环境下三种典型致嗅藻产嗅特性研究

程亚; 吴永鹏; 王军锋; 马彩云; 文刚; 王峰林; 黄廷林

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中国环境科学 ›› 2026, Vol. 46 ›› Issue (1) : 161-167.

水污染与控制

供水管网环境下三种典型致嗅藻产嗅特性研究

程亚¹, 吴永鹏¹, 王军锋², 马彩云¹, 文刚¹, 王峰林², 黄廷林¹

作者信息 +

The odor production characteristics of three typical odor-producing algae under water supply network environment

CHENG Ya¹, WU Yong-peng¹, WANG Jun-feng², MA Cai-yun¹, WEN Gang¹, WANG Feng-lin², HUANG Ting-lin¹

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文章历史 +

摘要

针对铜绿微囊藻、灰假鱼腥藻和颤藻3种典型致嗅藻,探究管网环境因子(水流剪切力、温度、黑暗/光照、管材)及连续流条件对其产嗅特性的影响.结果表明,水流剪切力显著促进灰假鱼腥藻(链状)和颤藻(丝状)的2-MIB释放,高剪切力下两者破损率超90%,而铜绿微囊藻(球状)因结构耐受破损率低于30%.温度对铜绿微囊藻产β-cyclo影响显著,30℃时浓度达40ng/L,低温虽致细胞破裂但抑制代谢,嗅味浓度反较低.黑暗环境和管材对3者产嗅影响有限,仅轻微增加破损率(<5%)和嗅味浓度(<8ng/L).连续流实验显示,灰假鱼腥藻和颤藻在高流速下2-MIB释放更快(0.5h达峰值)、浓度更高(最高85ng/L),且嗅味物质达峰时间较序批式实验显著缩短.研究明确水流剪切力和温度为产嗅主控因子,可为管网嗅味控制提供科学依据.

Abstract

This study investigated the impacts of pipeline environmental factors (hydraulic shear force, temperature, darkness/light conditions, pipe materials) and continuous flow conditions on odor production characteristics of three typical odor-producing algae: Microcystis aeruginosa, Pseudanabaena galeata, and Oscillatoria. Key findings revealed that hydraulic shear force significantly promoted 2-MIB release in chain-forming Pseudanabaena galeata and filamentous Oscillatoria, with rupture rates exceeding 90% under high shear conditions. In contrast, spherical Microcystis aeruginosa exhibited structural tolerance with rupture rates below 30%. Temperature markedly influenced β-cyclocitral production in Microcystis aeruginosa, reaching 40ng/L at 30℃. Although low temperature induced cell rupture, it suppressed metabolic activity, resulting in lower odorant concentrations. Darkness and pipe materials showed limited effects, only slightly increasing rupture rates (<5%) and odorant concentrations (<8ng/L). Continuous flow experiments demonstrated accelerated 2-MIB release in Pseudanabaena galeata and Oscillatoria under high flow velocity, achieving peak concentrations (up to 85ng/L) within 0.5hours-significantly faster than batch experiments. The study identifies hydraulic shear force and temperature as primary control factors for odor production, providing scientific guidance for odor management in water distribution systems.

导出引用

程亚, 吴永鹏, 王军锋, 马彩云, 文刚, 王峰林, 黄廷林. 供水管网环境下三种典型致嗅藻产嗅特性研究[J]. 中国环境科学. 2026, 46(1): 161-167

CHENG Ya, WU Yong-peng, WANG Jun-feng, MA Cai-yun, WEN Gang, WANG Feng-lin, HUANG Ting-lin. The odor production characteristics of three typical odor-producing algae under water supply network environment[J]. China Environmental Science. 2026, 46(1): 161-167

中图分类号： X172

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