• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>WateReuse Symposium >Decentralized Alternatives Improve Water Reuse Feasibility for Oahu's North Shore
【24h】

Decentralized Alternatives Improve Water Reuse Feasibility for Oahu's North Shore

机译：分散的替代品可以改善瓦胡北岸的水重用可行性

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The island of Oahu is the most heavily populated of the Hawaiian Islands; however, it lacks significant island-wide reuse applications. This is due in part to their centralized wastewater facilities in the urbanized portions of the island. The North Shore region consists of five unsewered subregions from Mokuleia to Sunset Beach that have been evaluated in the past for centralized wastewater treatment service, but these plans were not acceptable to the local community. As part of a wastewater master plan project Brown and Caldwell has reevaluated the area and identified regional reuse opportunities, which were both desired and well received by the local community. Essential to the plan, and its acceptance, was the incorporation of decentralized wastewater systems. Identified water reuse opportunities include park and landscape irrigation as well as agricultural irrigation for the North Shore. Facilities Planning Approaches In 1987 a wastewater facility plan was prepared that recommended a 1.4 mgd centralized wastewater treatment plant with conventional gravity sewer collection of the entire region and an ocean outfall for effluent disposal. When that plan failed to be implemented, in part due to local objections, a second facility plan was developed in 1996 that proposed two 0.7 mgd subregional plants with water reuse. The local community also rejected the second plan due to the high cost of sewering and potential growth-inducing impacts. The current regional wastewater treatment plan has approached this issue in a different and unique way, by involving the community from the beginning and considering decentralized facilities. Planning was performed with the input and guidance of a core working group (CWG) comprised of involved community members representing diverse local interests. Decentralized Water Reuse Opportunities by Subregion The potential water reuse areas in each of the five subregions were identified using a map-based analysis that eliminated unuseable acreage. The flows from each of the five subregions were generated by multiplying available land area by typical water use per acre for residential, commercial and institutional areas. The five subregions have different opportunities for water reuse. Mokuleia has more adjacent agricultural land that could be served by sewering the subregion. Waialua has more reuse opportunities because there is more wastewater and there are parks, open space and irrigated land nearby. Similarly, Haleiwa, which has the most commercial establishments and may be more suitable for a small collection and treatment system, has more wastewater and irrigable acreage in relatively close proximity. Kawailoa has a relatively narrow strip of land available for water reuse and the Sunset/Pupukea region has more water than available land for reuse. Conclusions Previous facilities plans for the North Shore were not acceptable to the local community after recommending centralized collection and treatment plants. The recent study identified decentralized options for water reuse by focusing on lands that could be irrigated and then looking for nearby sources of recycled water. The holistic approach of reusing resources within a community is also consistent with the old Hawaiian concept of Ahupua'a in which basins were self-sustaining. This decentralized approach allowed for public buy-in of providing sewer service and allows for using recycled water as a drought proof water supply.
机译：瓦胡岛是夏威夷群岛最严重的群体;但是，它缺乏显着的岛屿范围重用应用程序。这部分是岛上城市化部分中的集中废水设施。北岸地区由来自Mokuleia的五个未经殖民地区域组成的日落海滩，以便在过去进行集中污水处理服务，但这些计划对当地社区不可接受。作为废水总体规划项目的一部分，布朗和卡尔德威尔重新评估了该地区，并确定了区域重复使用的机会，这些机会都是所需的，也是当地社区受到欢迎。对于计划至关重要，并验收是分散的废水系统的纳入。确定的水再利用机会包括公园和景观灌溉以及北岸的农业灌溉。设施规划方法于1987年，制定了一项废水设施计划，推荐了一个1.4 MGD集中废水处理厂，具有传统的重力下水道集合的整个地区和海洋排水口进行废水处理。当该计划未能实施时，部分由于当地反对意见，1996年开发了第二种设施计划，提出了两种0.7 MGD次区域植物，水重用。由于污水的高成本和潜在的生长诱导的影响，当地社区也拒绝了第二计划。目前的区域污水处理计划以不同而独特的方式接近这个问题，通过涉及从一开始并考虑分散的设施。规划是根据涉及代表不同当地利益的涉及社区成员的核心工作组（CWG）的投资和指导。分散的水再利用机会通过次区域，使用基于地图的分析来确定五个子区域中的每一个中的潜在水再利用区域，以消除不可用的种植面积。来自五个次区域中的每一个的流量是通过将可用的土地面积乘以每英亩的典型用水，用于住宅，商业和机构领域。五个次区域对水重用有不同的机会。 Mokuleia拥有更多邻近的农田，可以通过削减次区域来服务。 Waialua拥有更多的重用机会，因为有更多的废水，附近有公园，开放空间和灌溉土地。同样，拥有最多商业机构的Haleiwa可能更适合小型收集和治疗系统，具有更多的废水和较为近距离的不可舒适的面积。 Kawailoa有一个相对狭窄的土地，可用于水再利用，日落/傀儡地区的水比可用土地更多的水。结论在建议集中收集和治疗厂后，当地社区，北岸的以前的设施计划是不可接受的。最近的一项研究确定了通过专注于可以灌溉的土地来重复使用的分散选择，然后在寻找附近的回收水来源。在社区内重新使用资源的整体方法也与Ahupua'a的旧夏威夷概念一致，其中盆地是自我维持的。这种分散的方法允许公开买入下水道服务，并允许使用再生水作为防旱供水。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号