Regulating Chlorophyll a to Control DBP Precursors in Water Supply Reservoirs
Regulating Chlorophyll a to Control DBP Precursors in Water Supply Reservoirs
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调节叶绿素 a 以控制供水水库中的 DBP 前体
DOI：
10.5942/jawwa.2015.107.0153
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
F. Rosario‐Ortiz
中科院分区：
文献类型：
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作者：
J. Saunders;A. Hohner;R. Summers;F. Rosario‐Ortiz
科罗拉多州最近通过了5μg/L的叶绿素标准，作为对直接使用的供水水库的额外保护。通过调节这些水库中的叶绿素a来限制藻类丰度是一项预防措施，旨在控制或减少藻类衍生的消毒副产物前体(DBPs)。叶绿素标准的制定是基于对科罗拉多州水库的实地研究和相关水处理系统的合规数据。控制这些水库中的藻类丰度可以补充常规处理，或者在藻类对在处理过程中形成DBPs的有机前体有重大贡献的情况下，作为附加处理的替代方案。对藻类的关注很重要，因为在常规的水处理过程中，藻类前体很难去除，而且藻类的丰度可以通过营养供应来控制。
Colorado recently adopted a chlorophyll a standard of 5 μg/L as an option for additional protection of direct‐use water supply reservoirs. Setting a limit on algal abundance by regulating chlorophyll a in these reservoirs is a preventive measure aimed at controlling or reducing algal‐derived precursors of disinfection by‐products (DBPs). Development of the chlorophyll a standard was based on field studies of Colorado reservoirs and compliance data from the associated water treatment systems. Controlling algal abundance in these reservoirs can supplement conventional treatment or serve as an alternative to additional treatment in situations in which algae contribute significantly to the organic precursors that can form DBPs during treatment. The focus on algae is important because algal‐derived precursors are difficult to remove during conventional water treatment and because algal abundance can be controlled via the nutrient supply.