AWWA JAW70293 Journal AWWA - Designing Pretreatment to Control Arsenic Leaching in ASR Facilities

AWWA期刊-设计预处理以控制ASR设施中的砷浸出

基本信息

标准号

AWWA JAW70293

标准状态

现行

发布单位或类别

美国-美国给水工程协会(US-AWWA);

发布日期

实施日期

废止日期

CCS分类

ICS分类

研制信息

起草单位

- 展开▼

起草人

归口单位

摘要

Arsenic leaching in aquifers has become aproblem for aquifer storage and recovery (ASR)operations. The highly oxidative nature of finishedwater causes arsenic in naturally occurringminerals to leach from aquifer formations. Theauthors evaluated the effects of lowering dissolvedoxygen concentrations and removing chorineresidual in injected potable water on arsenicleaching in storage aquifers. Using geochemicalmodeling, they predicted interactions betweeninjected water and the stored aquifer formationand native water quality. The authors found thatreturning finished potable water to native groundwaterquality through wellhead pretreatment mayprevent naturally occurring arsenic from leachingfrom aquifers. In addition, existing pretreatmenttechnologies can be implemented that make theinjected water more compatible with the nativeaquifer quality. These pretreatment technologiescould allow utilities to operate their ASR facilitiesin compliance with federal underground injectioncontrol regulations and drinking water criteria,thereby avoiding consent/administrative ordersfrom regulatory agencies. Includes 41 references, tables, figures. 含水层中砷的浸出已成为一个难题含水层储存和恢复问题（ASR）操作。成品的高度氧化性质水在自然环境中产生砷从含水层中浸出的矿物。这个作者评估了降低溶解氧的效果氧浓度与脱氯注射饮用水中砷的残留蓄水层中的淋滤。利用地球化学通过建模，他们预测了注入水和蓄水层以及当地的水质。作者发现将成品饮用水返回天然地下水通过井口预处理可以提高质量防止自然产生的砷浸出来自含水层。此外，现有的预处理可以实施技术，使注入的水与天然水更相容含水层质量。这些预处理技术允许公用事业公司运营其ASR设施符合联邦地下注射法控制法规和饮用水标准，从而避免同意/行政命令来自监管机构。包括41个参考文献、表格、图表。展开▼

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