Algal production and trihalomethane formation potential: an experimental assessment and inter-river comparison
Algal production and trihalomethane formation potential: an experimental assessment and inter-river comparison
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藻类生产和三卤甲烷形成潜力：实验评估和河流间比较
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
P. Bukaveckas
中科院分区：
文献类型：
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作者：
J. Jack;T. Sellers;P. Bukaveckas
三卤甲烷(THM)是饮用水消毒过程中产生的副产物。我们采用调查和实验相结合的方法来确定影响俄亥俄河流域THM形成潜力(THMFP)的因素。对俄亥俄河及其五条主要支流进行了两次调查，以表征THMFP与藻类丰度和悬浮有机质的空间变化。我们在2000年进行了三个实验，放置俄亥俄河水-L室外中温带和通过遮荫控制藻类的衰老和水华发育。在高、低光照和黑暗的水槽中THMFP的增加表明，藻类的产生、藻类的衰老以及可能的光解在36天内使THMFP增加了50%。在调查和实验环境中都观察到了可比的THMS产量(单位叶绿素)。输入水和输出水的比较表明，俄亥俄河有时会减弱THM前体的下游输送。我们的发现表明..。
Trihalomethanes (THMs) are byproducts produced during the disinfection of drinking water. We combined survey and experimental approaches to identify factors that influence THM formation potential (THMFP) in the Ohio River drainage basin. Two surveys of the Ohio River and its five principal tributaries were conducted to characterize spatial variation in THMFP in relation to algal abundance and suspended organic matter. We performed three experiments by placing Ohio River water in 2000-L outdoor mesocosms and manipulating algal senescence and bloom development by shading. Increases in THMFP among high- and low-light and dark tanks suggest that algal production, algal senescence, and possibly photolysis increased THMFP by as much as 50% over 36 days. Comparable yields of THMs (per unit of chlorophyll) were observed in both survey and experimental settings. Comparison of input waters with outputs indicates that the Ohio River at times acts to attenuate downstream transport of THM precursors. Our findings sug...