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首页> 外文会议>American Water Resources Association's Annual Water Resources Conference, Nov 6-9, 2000, Miami, Florida >ENGLEWOOD WATER DISTRICT CONJUNCTIVE USE WELLFIELDS IMPROVE GROUNDWATER QUALITY
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ENGLEWOOD WATER DISTRICT CONJUNCTIVE USE WELLFIELDS IMPROVE GROUNDWATER QUALITY

机译：英格伍德水域联合使用井田可提高地下水水质

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The Englewood Water District (EWD) is located in southwest Florida along the coastlines of Sarasota/Charlotte Counties. Potable water is derived entirely from groundwater resources, which are experiencing degrading quality. Resource management options are identified that are designed to protect and enhance existing wellfields and provide for additional supply. EWD operates three freshwater wellfields, two brackish water wellfields, and a lime softening water treatment plant (LS WTP) and reverse osmosis (RO) WTP. Finished water is distributed as a blend of equal portions of freshwater treated at the LS WTP and brackish water treated at the RO WTP. Brackish water Wellfield 2 is conjunctively located within the confines of freshwater Wellfield 2. Improvement in groundwater quality at freshwater Wellfield 2 is attributed to the conjunctive operation of brackish water Wellfield 2 since 1994. EWD water use demands will be met by the existing total permitted quantities of 5.36 million gallons per day through the year 2006 (CH2M-HILL, February 1997). Deteriorating brackish water quality, however, necessitates the development of additional water supplies. Development of a proposed brackish water wellfield as part of conjunctive operation with freshwater wellfield 3 will allow a reduction in brackish water withdrawals at the existing wellfields, thereby prolonging the use of brackish water as a resource (CH2M-HILL and PBS&J, March 2000). Aquifer Storage Recovery (ASR) is a viable option for EWD to optimize utilization of groundwater resources. Numerous ASR options have been identified with objectives of enhancing supply during the dry season and providing backup water supply in case of an emergency shutdown of a WTP or wellfield.
机译：恩格尔伍德水域（EWD）位于佛罗里达州西南部，沿萨拉索塔/夏洛特县的海岸线。饮用水完全来自地下水资源，地下水质量正在下降。确定了旨在保护和增强现有井场并提供额外供应的资源管理选项。 EWD经营着三个淡水井场，两个微咸水井场，石灰软化水处理厂（LS WTP）和反渗透（RO）WTP。精制水以在LS WTP处理过的淡水与在RO WTP处理过的咸水的等份混合而成。苦咸水Wellfield 2联合位于淡水Wellfield 2的范围内。淡水Wellfield 2的地下水质量的改善归因于咸水Wellfield 2自1994年以来的联合运行。现有的允许总量将满足EWD的用水需求到2006年，每天的总排放量为536万加仑（CH2M-HILL，1997年2月）。但是，微咸的水质恶化需要开发更多的水源。与淡水井场3联合运行时，拟议的微咸水井场的开发将减少现有井场的微咸水取水量，从而延长微咸水作为资源的使用（CH2M-HILL和PBS＆J，2000年3月）。含水层存储恢复（ASR）是EWD优化地下水资源利用的可行选择。已经确定了许多ASR选项，目的是在旱季增加供水量，并在WTP或井场紧急关闭的情况下提供备用供水。

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