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首页> 外文会议>2011 Membrane technology conference amp; exposition. >Minimizing Sewer Discharge through Ultrafiltration Reject Recovery: A Case Study
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Minimizing Sewer Discharge through Ultrafiltration Reject Recovery: A Case Study

机译：通过超滤拒绝回收最大程度地减少下水道排放：一个案例研究

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The use of microfiltration / ultrafiltration (MF/UF) membrane systems for the productionrnof drinking water and for wastewater reclamation is rapidly replacing conventional mediarnfiltration plants. One of the major issues surrounding the use of membrane filtration is how torndispose of the waste stream (or commonly referred to as reject stream). Typical disposalrnoptions include surface water discharge, groundwater discharge or disposal into the local sewerrnsystem. Reject recovery systems are being installed as a new means of conservation in orderrnto conserve potable water sources and reduce wastewater treatment costs by minimizingrndischarge to the sewer system. These systems are installed as second stage MF/UFrnmembrane systems to treat the reject from a first stage (or initial) MF/UF membrane system.rnEastern Municipal Water District (District), in Perris, CA, is a public water agency andrncommunity water system that provides domestic and agricultural water, wastewater collectionrnand treatment service, and recycled water in a 555 square mile service area with a population ofrn570,000 in western Riverside County. The District is located in one of the most rapidly growingrnregions in the United State – since 1990 over 230,000 people have been added to the District’srnservice area, nearly doubling the population. The District has three sources of water supply: 1)rnimported water from the Metropolitan Water District of Southern California (MWD); 2) localrngroundwater production; and 3) recycled water.rnOne of the District’s sources of potable water supply includes the 20 million gallon perrnday (mgd) Perris Water Filtration Plant (PWFP). The PWFP operates with a recovery range ofrn96 percent to 98 percent and following an upcoming expansion to 24 mgd, will generate up to 1rnmgd of reject water that is currently disposed to the sewer. The District is currently conductingrnthe preliminary design to install a Reject Recovery Facility (RRF) to reclaim this water tornconserve water supply and reduce wastewater conveyance and treatment costs.rnThis paper will detail the procurement and preliminary design evaluations to provide arnlow pressure membrane treatment system for the recovery of membrane reject water. Inrnaddition, the paper will detail the issues, design and regulatory requirements surrounding thernintroduction of second stage (reject) filtration to the clearwell based on implications of the LongrnTerm 2 Enhanced Surface Water Treatment Rule (LT2ESWTR).
机译：将微滤/超滤（MF / UF）膜系统用于生产饮用水和废水回收，正在迅速取代传统的中滤厂。围绕使用膜过滤的主要问题之一是如何对废物流（或通常称为废弃物流）进行处置。典型的处置方案包括地表水排放，地下水排放或处置到当地下水道系统中。正在安装拒绝回收系统，将其作为一种新的保护手段，以节省饮用水源并通过最大程度地减少下水道系统的排放来降低废水处理成本。这些系统安装为第二阶段MF / UF膜系统，以处理第一阶段（或初始）MF / UF膜系统的废品。位于加利福尼亚州佩里斯的东市政水区（地区）是公共水务机构和社区水系统在西部河滨县555平方英里的服务区内提供生活用水和农业用水，废水收集和处理服务以及循环水，人口为570,000。该地区位于美国发展最快的地区之一-自1990年以来，该地区的服务区已新增23万多人，人口几乎翻了一番。该地区有三个水源：1）从南加州大都市水区（MWD）进口的水； 2）当地地下水生产；和3）循环水。该地区的饮用水供应来源之一是佩里斯水过滤厂（PWFP），耗电量为2000万加仑。 PWFP的回收率在96％到98％之间，在即将扩大到24 mgd之后，将产生高达1rnmgd的废水（目前已排入下水道）。该区目前正在进行初步设计，以安装拒绝回收设施（RRF）来回收该水，以节约水源并减少废水的输送和处理成本。本文将详细介绍采购和初步设计评估，以为该工厂提供arnlow压力膜处理系统。回收膜废水。此外，本文还将根据LongrnTerm 2增强型地表水处理规则（LT2ESWTR）的含义，详细介绍将第二阶段（拒绝）过滤引入透明井的问题，设计和法规要求。

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