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首页> 外文会议>Annual Water Environment Federation technical exhibition and conference >The Neighbor on Norchester: A Complex Project Becomes a Showcase for Integrating Stakeholders
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The Neighbor on Norchester: A Complex Project Becomes a Showcase for Integrating Stakeholders

机译：诺切斯特的邻居：一个复杂的项目成为利益相关者整合的展示

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It's no secret that no one wants a sewage pump station in their backyard. But the renovated Norchester Pump Station in Norfolk, Virginia, demonstrates how sanitary infrastructure can seamlessly blend within a residential community. Built in the 1940s and owned by the Hampton Roads Sanitation District (HRSD), the pump station struggled to meet current customer demand. In addition, excessive microbial corrosion had caused significant damage to the facility's wet well, increasing the likelihood of collapse. HRSD called on Gannett Fleming's wastewater design and construction team to resolve these concerns and optimize a new pump station that effectively manages both average day and wet weather conditions. Despite several complexities, including the site's limited size, extreme weather, and overwhelming odors, the project team developed solutions that combine both function and form. The new $6.8 million station safely collects and transports sewage, while meeting the aesthetic aspirations of the community. Norchester is HRSD's third largest pump station, and the second largest in its South Shore collection system. Yet, the Norchester site is a mere 62 feet wide, and just 7 feet from neighboring homes. The extremely confined location created a series of challenges, including construction impacts on the structural integrity of the houses, restricted access for construction equipment, and concerns about the overall aesthetics of the pump station. To protect the surrounding community, Gannett Fleming required vibration monitoring during construction. This yielded real-time data that allowed for up-to-the-minute decisions to help mitigate damage to the homes. Site access issues were minimized through close collaboration with the City of Norfolk, which resulted in their rare approval to close the portion of Norchester Avenue directly in front of the pump station for the 2.5-year construction period. To visually integrate in the community, the pump station was designed according to the architectural styling of the neighborhood, with features including white lap siding, red brick masonry accents, decorative columns, and a chimney. Traditional pump station design approaches to wet weather conditions include extra storage in the wet well or larger pumps, which run infrequently and sometimes inefficiently. Historically, less attention was focused on design standards produced by the Hydraulic Institute (HI), the global authority on pumping systems. In the case of Norchester, the Gannett Fleming design team pursued HI standards and created a first for the Hampton Roads collection systems - a self-cleaning, trench-type wet well. This system is efficient, easily cleaned, and creates optimum hydraulic conditions that help optimize pump life. To select the most appropriate pump size for the station, the team first determined the average day and wet weather wastewater flow volume. While the project team was collecting flow data through monitors in street manholes, the region was battered by a Nor'easter. The storm produced a deluge of rainfall, causing significant data anomalies-beyond even a 500-year storm event. The project engineers had to account for this in the design. After careful consideration and calculation, the team advanced a plan to accommodate an average daily flow of 2.6 million gallons per day (mgd) and a wet weather flow of 10.8 mgd. The final design included two 75-horsepower, dry-pit submersible pumps for daily flow conditions, supplemented by two 200-horsepower dry-pit submersible pumps, for wet weather flows. Through the years, HRSD received a number of complaints from residents regarding odors emanating from the previous pump station. Odor sampling yielded off-the-chart levels, which demanded extreme control measures. An advanced odor control system with a biological trickling filter and a secondary carbon scrubber was selected. This system uses biological media to treat the sewer gases, followed by carbon to adsorb any remaining odors. While such high-strength odor control measures are seen in treatment plants, they have not been applied to the regional wastewater authority's pump stations until now. To build the new station on the existing site, the old pump station had to be taken offline. At the same time, sewage flow still needed to be maintained between customers and the treatment plant. To make this possible, a temporary pump station was constructed in the street to allow for demolition of the existing station and construction of the new one. This complex bypass system included a wet well with multiple influents and three temporary bypass pumps hard-piped into the force main. The elaborate sequencing of the bypass implementation consisted of 25 steps, including piping, valving, a 24-inch linestop, installation of a polymer manhole and a 10-foot by 6-foot wet well, and three short-term gravity line bypasses on adjacent streets. Multiple stakeholders were involved in the Norchester Pump Station project, including HRSD, the City of Norfolk, the civic league, a neighboring university and area residents. The project team gave careful consideration to each of their varying concerns for cost, schedule, and priorities, and launched a significant effort to ensure effective and comprehensive community outreach. From public meetings and door-knocking to participation in community days and a full-time construction manager on the front lines, the team addressed noise, vibration, traffic disruption, and construction dust concerns. The architectural enhancements helped the station blend into the neighborhood's character to great effect with the residents. The Norchester Pump Station boasts a beautifully designed facade that fully conceals the sewer infrastructure and provides aesthetic continuity with the rest of the neighborhood. Combined with the station's self-cleaning, trench-type wet well; pumps that are capable of managing various flows; and advanced odor-control technology, the project shines a spotlight on best practices for the seamless blending of critical sanitary infrastructure in a residential community. Pump station, self-cleaning wet well, odor control, biotrickling filter, biotower, stakeholders, residential, temporary bypass, maintenance of flow, architectural treatment, wet weather, Hydraulic Institute standards.
机译：没有人希望在他们的后院里有一个污水泵站，这已经不是什么秘密了。但是，经过翻新的弗吉尼亚州诺福克市的诺切斯特泵站展示了卫生基础设施如何在住宅社区内无缝融合。泵站建于1940年代，由汉普顿路卫生区（HRSD）拥有，努力满足当前客户的需求。此外，过度的微生物腐蚀已严重破坏了设施的湿井，增加了倒塌的可能性。 HRSD呼吁Gannett Fleming的废水设计和施工团队解决这些问题，并优化一个新的泵站，该泵站可以有效地管理日间和潮湿天气。尽管存在一些复杂性，包括场地的局限性，极端天气和难闻的气味，但项目团队开发了将功能和形式结合在一起的解决方案。新的耗资680万美元的加油站可以安全地收集和运输污水，同时满足社区的审美诉求。诺切斯特是HRSD的第三大泵站，也是其南岸收集系统的第二大泵站。然而，诺切斯特遗址只有62英尺宽，距离相邻房屋仅7英尺。极为狭窄的位置带来了一系列挑战，包括施工对房屋结构完整性的影响，施工设备的出入受限以及对泵站整体美观的关注。为了保护周围社区，甘内特·弗莱明（Gannett Fleming）在施工过程中需要进行振动监测。这样就产生了实时数据，可以进行最新决策，以减轻对房屋的破坏。通过与诺福克市的密切合作，将站点访问问题降到了最低，这导致他们罕见地批准在2.5年的建设期间关闭直接位于泵站前的诺切斯特大街部分。为了在视觉上融入社区，泵站根据邻里的建筑风格进行设计，其功能包括白色膝骨壁板，红砖砌体装饰，装饰柱和烟囱。针对潮湿天气条件的传统泵站设计方法包括在湿井或大型泵中额外存储，这些泵很少运行，有时效率很低。从历史上看，较少的注意力集中在由液压系统（HI）（泵系统的全球权威机构）制定的设计标准上。就诺切斯特而言，加内特·弗莱明（Gannett Fleming）设计团队遵循HI标准，并为Hampton Roads收集系统创建了第一套产品-自清洁沟槽式湿井。该系统高效，易于清洁，并创造了最佳的液压条件，有助于延长泵的使用寿命。为了为该站选择最合适的泵尺寸，团队首先确定了平均日流量和潮湿天气的废水流量。当项目团队通过街道检修井收集流量数据时，该地区遭受了Nor'easter的袭击。这场暴风雨造成了大范围的降雨，甚至在500年的暴风雨事件发生之后，都引起了重大数据异常。项目工程师必须在设计中考虑到这一点。经过仔细的考虑和计算，该团队提出了一项计划，以容纳平均每天260万加仑的日流量（mgd）和潮湿天气的10.8 mgd。最终设计包括两个用于日常流量条件的75马力干井潜水泵，以及两个用于湿润天气的200马力干井潜水泵。多年来，HRSD收到了许多居民关于旧泵站散发的异味的投诉。气味采样产生了图表外的水平，因此需要采取极端控制措施。选择了带有生物滴滤器和辅助碳洗涤塔的高级气味控制系统。该系统使用生物介质处理下水道气体，然后使用碳吸附任何残留的气味。尽管在污水处理厂中可以看到这种高强度的气味控制措施，但到目前为止，这些措施尚未应用于区域废水管理部门的泵站。为了在现有站点上构建新站点，必须将旧泵站点离线。同时，客户和处理厂之间仍需要保持污水流量。为了实现这一点，在街道上建造了一个临时泵站，以便拆除现有的泵站并建造新的泵站。这个复杂的旁路系统包括一个带有多个进水口的湿井和三个临时旁路泵，这些泵通过管道硬性地连接到了总管中。旁路实施的详细步骤包括25个步骤，包括管道，阀门，24英寸线顶，安装聚合物检修孔和10英尺乘6英尺的湿井，以及相邻的三个短期重力管线旁路街道。多个利益相关者参与了Norchester Pump Station项目包括HRSD，诺福克市，公民联盟，附近的大学和当地居民。项目团队仔细考虑了他们对成本，进度和优先级的各种关注，并做出了巨大的努力以确保有效和全面的社区服务。从公开会议和敲门声到参加社区日和一线的专职建筑经理，该团队解决了噪声，振动，交通中断和建筑尘埃的问题。建筑上的改进帮助车站融入了邻里的特色，从而对居民产生了巨大影响。诺切斯特泵站的外观设计精美，完全掩盖了下水道的基础设施，并为附近的其他区域提供了美学上的连续性。结合该站的自清洁，沟槽式湿井;能够处理各种流量的泵;以及先进的气味控制技术，该项目将最佳实践聚焦在居民社区中关键卫生基础设施的无缝融合上。泵站，自清洁湿井，气味控制，生物滴滤池，生物塔，利益相关者，住宅，临时旁路，流量保持，建筑处理，潮湿天气，水工学院标准。

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