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首页> 外文会议>2011 Membrane technology conference amp; exposition. >GWUDI Microfiltration in Rural Northern Idaho: The Enaville WTP Story
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GWUDI Microfiltration in Rural Northern Idaho: The Enaville WTP Story

机译：爱达荷州北部农村地区的GWUDI微滤：Enaville WTP的故事

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摘要

In a mountainous area historically famous for metal mining and logging in northern Idaho,rnresidents recently installed 5.6 MGD of groundwater membrane filtration capacity. The newrntreatment plant satisfies LT2ESTR treatment requirements. The system was installed after thernlocal groundwater well was classified as groundwater under the direct influence (GWUDI) ofrnsurface water.rnThe membrane filtration system was procured through a pilot test- procurement approach inrn2007. After the membrane system supplier was selected, a detailed design was prepared andrnsubmitted by the end of 2008. The Construction effort was substantially finished in Decemberrn2010 and the Commissioning process is expected to be complete by March 2011.rnThe project, which uses a direct filtration approach and backwash treatment to achieve a highrnlevel of water recovery, has been implemented into an existing system in a rural mountainousrnsetting. Each of these constraints helped shape the project. For example, the remote locationrnand limited disposal options for spent CIP solution disposal led to implementation of a customrnchemical cleaning approach. Similarly, due to the existing well pumping capacity, a water towerrnstyle feed equalization system was implemented to control membrane basin level.rnDuring the project, the membrane system supplier made the decision to phase out thernprocured membrane product and replace their design with new membrane chemistry. As arnresult of government furlough the manufacturer was unable to secure regulatory approval ofrnthe new product in a reasonable timeframe and the membrane delivery timelines werernchallenged as a decision was made to either stay with the product being phased out or movernforward with a product that was under regulatory review but not yet approved for use.rnAdditionally, the membrane substitution would cause a de-rating of plant production capacityrnor result in modification of the pilot tested and procured operating conditions – with likelyrnmembrane warranty implications.rnThis presentation will not only introduce a new membrane filtration system to the drinkingrnwater community, but it will also discuss the treatment process and civil/ mechanical designrnphilosophy of the facility and the challenges that resulted from new membrane product roll outrnduring construction.
机译：在爱达荷州北部历史上以金属开采和伐木闻名的山区，居民们最近安装了5.6 MGD的地下水膜过滤能力。新的处理厂满足LT2ESTR处理要求。该系统是在地表水直接影响（GWUDI）的作用下将本地地下水井归类为地下水之后安装的。膜过滤系统是通过2007年的试点采购方法采购的。选择了膜系统供应商后，详细的设计工作已准备就绪，并于2008年底提交。2010年12月，施工工作已基本完成，调试过程预计将于2011年3月完成。rn该项目采用直接过滤方法为了实现高水平的水回收利用而进行的反冲洗处理已被应用到农村山区的现有系统中。这些约束中的每一个都有助于塑造项目。例如，偏远的地点和对用过的CIP解决方案的处理选择有限，导致实施了定制的化学清洗方法。同样，由于现有的井抽能力，实施了水塔式进料均衡系统来控制膜池水位。在项目期间，膜系统供应商决定逐步淘汰膜产品，并用新的膜化学替代其设计。由于政府休假的结果，制造商无法在合理的时间范围内获得新产品的监管批准，并且膜运输的时间表也被迫中断，从而决定要么继续淘汰该产品，要么继续使用正在接受监管审查的产品但是，膜的替代还会导致工厂生产能力的下降-或导致试验性和采购性操作条件的改变，这可能会影响膜的保修。饮用水社区，但还将讨论该设施的处理过程和土木/机械设计理念，以及新膜产品在生产过程中投入生产所带来的挑战。

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