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首页> 外文会议>Conjunctive use of water resources: Aquifer storage and recovery >ASR USING A DEEP MIDWESTERN AQUIFER: DES MOINES (IOWA) WATER WORKS' ASR DEMONSTRATION PROGRAM
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ASR USING A DEEP MIDWESTERN AQUIFER: DES MOINES (IOWA) WATER WORKS' ASR DEMONSTRATION PROGRAM

机译：使用深部中层含水层进行ASR：DES MOINES（IOWA）水厂的ASR示范计划

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Des Moines Water Works (DMWW) is expanding it's finished water supply to 55 million gallons per day (MGD). DMWW's existing plant has reached it's reliable treatment capacity. DMWW is building a second surface water treatment plant supplied by alluvial wells that will be capable of only 25 MGD. To develop the remaining 30 MGD, DMWW is evaluating the feasibility of Aquifer Storage and Recovery (ASR) using a deep midwestern aquifer. This is the first ASR evaluation in the midwest and the deepest storage zone attempted. DMWW received an EPA Demonstration Program Grant to evaluate the use of the Jordan Aquifer for ASR.rnA Phase I Preliminary Feasibility Study was performed in 1996 to evaluate the geology and geochemistry of the Jordan Aquifer storage zone at a depth 2,500 feet. The potential operational challenges posed by differences in temperature, pressure, and water chemistry will be evaluated through demonstration testing beginning in the spring of 1997. The Phase I study noted that 3.7 billion gallons in ASR storage would provide 30 MGD of emergency supply for 90 days, and provide 20 MGD of seasonal peak capacity for 48 days per year. Preliminary cost estimates indicate that the 30 MGD ASR supply could be developed for a capital cost of approximately $0.53/gallon per day of peak capacity by converting existing production wells and installing several new wells. If the demonstration program confirms ASR feasibility, other midwestern water utilities relying on the regionally extensive Jordan Aquifer could benefit from the results of the program and develop their own cost-effective ASR systems.
机译：得梅因自来水厂（DMWW）正在将其最终供水量增加到每天5500万加仑（MGD）。 DMWW的现有工厂已达到其可靠的处理能力。 DMWW正在兴建第二座地表水处理厂，该厂由冲积井提供，仅需25 MGD。为了开发剩余的30 MGD，DMWW正在评估使用中西部深层含水层进行含水层存储和恢复（ASR）的可行性。这是中西部地区首次进行的ASR评估，也是尝试的最深存储区域。 DMWW获得了EPA示范计划拨款，以评估约旦含水层用于ASR。rnA第一阶段初步可行性研究于1996年进行，评估了约2500英尺深度约旦含水层存储区的地质和地球化学。由温度，压力和水化学差异引起的潜在操作挑战将从1997年春季开始通过示范测试进行评估。第一阶段研究指出，37亿加仑的ASR储存将在90天内提供30 MGD的紧急供应，并提供每年48天的20 MGD季节性高峰容量。初步成本估算表明，可以通过转换现有生产井并安装多口新井来开发30 MGD ASR供应，其资本成本约为每天每高峰容量0.53美元/加仑。如果该示范计划证实了ASR的可行性，那么依赖该地区广泛的Jordan Aquifer的其他中西部水务公司可以从该计划的结果中受益，并开发自己的具有成本效益的ASR系统。

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