Planning for the Distribution of Reclaimed Water by American Water Works Association

By American Water Works Association

Distribution of reclaimed water by using a twin distribution approach is combining authorized perform, delivering major expense reductions to utilities and delaying the necessity to enhance new water resources. Newly revised and re-titled, this guide offers assistance on making plans and designing twin distribution structures for taken care of reclaimed (nonpotable) water to be used in functions equivalent to commercial production, in addition to public parks and golfing direction irrigation. This booklet contains up to date chapters on making plans, engineering layout for remedy of reclaimed water and distribution platforms, and administration and operation of twin structures.

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Sample text

The community should also examine its own potential for water reuse. In new communities, or in areas of expansion in a community, existing customers do not exist, so it is necessary to use zoning maps and a community’s comprehensive plan to make projections of future demand in the identified area(s). Such demand projections are obviously tied to land use, but they are also related to a community’s interest and adopted regulations regarding the required use of reclaimed water. If a community aggressively pushes the use of reclaimed water, their potential demand will be higher.

Planning studies should be conducted to determine the optimal locations of such facilities in the existing distribution system. Satellite wastewater treatment facilities can also be designed to provide adequate reclaimed water at a point-of-use location, rather than depending on a more centralized (and remote) advanced wastewater treatment plant. Consideration of such decentralized systems are based on a variety of factors, but generally are driven by economics. Once a treatment program (or programs) has been developed, to fully analyze the Copyright (C) 2009 American Water Works Association All Rights Reserved PLANNING 45 various distribution system options that may be available for a reclaimed-water project, a map of the study area should be developed that includes the following information: The location of the proposed reclaimed-water treatment facilities; The location of existing and future customers identified as large potential users of reclaimed water; The location of existing rights-of-way, such as roads and major transit systems; General elevation information regarding the study area; and City and county boundaries.

Or 1 YZ in. and larger) should be compiled for both a dry and a wet year, and the data should be normalized to assess the impact of climate on the projected water use. If existing irrigation meters are installed, the data should be segregated by potable-water meters and irrigation meters. C. (the capital of North Carolina with a population of 360,000 in 2007), the records indicated that there were almost 3,500 large water meters with an average daily demand of 24 mgd. Approximately 300 irrigation meters registered an average daily demand of 1 mgd or greater (Black & Veatch 2006).

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