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现行 AWWA WQTC62506
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Managing Source of Supply to Enhance Water Quality and Optimize Treatment 管理水源 提高水质 优化处理
发布日期: 2005-11-01
新泽西联合水务公司(UWNJ)是一家私营水务公司,提供 为卑尔根和哈德逊60个城市的约80万居民提供服务 新泽西州北部的几个县。UWNJ拥有并运营供水系统 包括供水水库、处理设施、储存和泵送设施,以及 传输和分配系统管道。水主要由供水管道供应 霍沃斯水处理厂(WTP)位于新泽西州霍沃斯市,是一家 用于消毒和氧化的预臭氧直接过滤装置。这株植物正在生长 由明矾和聚合物组成,用于凝固,臭氧用于氧化,然后 通过浮选、直接过滤和最终氯胺化进行消毒 进入分销系统。 Oradell蓄水池是霍沃斯水处理厂的水源 植物过去5年来,奥拉代尔水库的水质一直在恶化。周边发达地区的径流和 瓦纳克南部项目的补充水导致了广泛的富营养化 水库的水。水库也会定期发生极端恶劣的天气 水质。这些条件通常在冬季干旱期表现出来 夏天和干旱时期。正是这些事件展现了一个非常重要的意义 对治疗过程的挑战。因此,UWNJ一直在寻求替代方案 管理Oradell水库的供水,以提高原水质量并将 霍沃斯治疗过程面临的挑战。确定并评估了以下水库管理方案: 奥拉代尔水库: 在Oradell水库中修建冗余取水构筑物; 修建一条管道,将瓦纳克南水直接输送至 霍沃斯处理厂; 之前,硫酸铝对Wanaque南部水中磷的钝化作用 向水库排放; 替代除藻剂/改良除藻剂应用的实施 技术; 在水库的Wanaque南入口修建一道幕墙;和 水库曝气系统的安装。 根据对这些替代方案的评估,建议使用水库曝气系统来稳定该地区的原水质量 奥拉德尔水库。更具体地说,该系统旨在: 稳定pH波动; 通过热分层保持表层和底层的分离 促进深度选择性戒断,同时管理缺氧的后果 在深层; 减少水库沉积物中营养物质、金属和有机物的释放;通过扰乱蓝藻的栖息地来降低蓝藻水华的强度 模式; 加强藻类群落内的竞争,以利于有益的 生物体(浮游动物)和非有害藻类(硅藻和绿藻);和 减少对除藻剂应用的依赖,以控制有害藻类。包括表格、数字。
United Water New Jersey (UWNJ) is a privately-owned water utility that provides service to about 800,000 residents in 60 municipalities within Bergen and Hudson Counties in Northern New Jersey. UWNJ owns and operates the water system which includes water supply reservoirs, treatment facilities, storage and pumping facilities, and transmission and distribution system piping. Water is supplied primarily from the Haworth Water Treatment Plant (WTP) located in Haworth, New Jersey, which is a direct filtration plant with pre-ozonation for disinfection and oxidation. The plant is comprised of alum and polymer addition for coagulation, ozone for oxidation, followed by flotation, direct filtration and ultimately chloramination for disinfection before entering the distribution system. The Oradell Reservoir serves as the source of supply for the Haworth Water Treatment Plant. The quality of the water in the Oradell Reservoir has been deteriorating over the past 5 years. Runoff from surrounding developed areas and the introduction of supplemental water from the Wanaque South project has led to extensive eutrophication of the reservoir. The reservoir is also subject to periodic episodes of extremely poor water quality. These conditions generally manifest themselves during dry periods in the summer and in times of drought. It is these episodes that present a very significant challenge to the treatment process. Consequently, UWNJ has pursued alternatives to manage the Oradell Reservoir supply to enhance the raw water quality and to minimize the challenges to the Haworth treatment processes. The following reservoir management options were identified and evaluated for the Oradell Reservoir: construction of a redundant intake structure in the Oradell Reservoir; construction of a pipeline for direct transmission of Wanaque South water to the Haworth Treatment Plant; aluminum sulfate inactivation of phosphorus in the Wanaque South water prior to discharge to the reservoir; implementation of alternative algaecide/modified algaecide application techniques; construction of a curtain wall at the Wanaque South inlet to the reservoir; and, installation of a reservoir aeration system. Based on evaluations of these alternatives, a reservoir aeration system was recommended to stabilize raw water quality in the Oradell Reservoir. More specifically, the system was designed to: stabilize pH fluctuations; maintain separation of the surface and bottom layers by thermal stratification to facilitate depth-selective withdrawal, while managing the consequences of anoxia in the deep layer; reduce the release of nutrients, metals and organics from reservoir sediments; reduce the intensity of blue-green algal blooms by disrupting their habitation patterns; enhance competition within the algal community so as to favor beneficial organisms (zooplankton) and non-nuisance algae (diatoms and green algae); and, reduce reliance on algaecide applications for control of nuisance algae. Includes tables, figures.
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发布单位或类别: 美国-美国给水工程协会
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