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Fate and Transport of Disinfection Byproducts in Surface Waters Receiving Wastewater Discharges 污水排放地表水中消毒副产物的归宿和迁移
发布日期: 2006-06-01
消毒副产物(DBPs)在地表水中的去向,可作为下游 对供水、接收废水进行了评估(即间接饮用水再利用)。这项研究 模拟了五种潜在损失机制(即生物降解、水解、光解、吸附、, 七组DBP(三卤甲烷)在地表水中的挥发, 卤代乙酸(HAAs)、卤代醛、卤代酮、卤代乙腈(HANs), 卤代硝基甲烷和亚硝胺。在可能的情况下,基本化学性质 用于预测命运和运输方程的关键参数。否则,参数 评估基于文献或实验室实验。DBP的移除,超过 对于三个具有代表性的河流系统(具有可变深度和流量),确定了固定河段 考虑过的。结果表明,河流中悬浮固体(SS)的吸附不是一个简单的过程 任何DBP的重要损失机制;而HAA的挥发损失可以忽略不计 主要是脱质子阴离子的存在。最重要的清除机制 氯仿挥发。包括表格、数字。
The fate of disinfection byproducts (DBPs) in surface waters, which could serve as downstream water supplies, receiving wastewater was evaluated (i.e., indirect potable reuse). This study modeled five potential loss mechanisms (i.e., biodegradation, hydrolysis, photolysis, sorption, and volatilization) in surface water for seven groups of DBPs: trihalomethanes (THMs), haloacetic acids (HAAs), haloaldehydes, haloketones, haloacetonitriles (HANs), halonitromethanes, and nitrosoamines. When possible, fundamental chemical properties were used to predict critical parameters for the fate-and-transport equations. Otherwise, parameter estimates were based upon literature or laboratory experiments. Removals of the DBPs, over a fixed river reach, for three representative river systems (with variable depth and flowrate) were considered. Results showed that sorption by suspended solids (SS) in the river is not an important loss mechanism for any of the DBPs; and HAA loss by volatilization is negligible due to the presence of primarily deprotonated anions. The most significant removal mechanism for chloroform was volatilization. Includes tables, figures.
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发布单位或类别: 美国-美国给水工程协会
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