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Getting Membrane Performance Out of a Conventional Filtration Plant in a Small Community 在一个小社区里从传统过滤设备中获得膜性能
发布日期: 2007-06-01
奴隶湖镇位于加拿大阿尔伯塔省的中北部地区。 该镇的水源来自小奴隶湖。现有的常规 处理厂建于1982年,水力能力为7毫升/日(1.85毫克/日)。像 作为改进计划的一部分,化学品进料系统在jar测试的基础上进行了升级 优化结果。利用该装置安装了一种新型粉末活性炭进料系统 一个旧的空地。 还开发了聚合物、酸和碱的新进料系统 安装。这使得该镇能够进行强化混凝,以达到所需的有机污染物 清除、控制味道和气味,并稳定植物性能。其他升级包括 将管式沉淀池并入三个澄清池中的两个(以实现未来容量), 在澄清池中安装自动污泥收集系统,并转换第三个 将澄清器连接到消毒剂接触池,以实现所需的贾第虫和病毒灭活。 滤器 排水沟和介质也被更换。 通过这些改进和优化强化混凝的实践,水 处理厂实现了所有处理目标(<0.05 NTU浊度,<20个颗粒[>2 um] 计数/毫升)。升级还使该镇得以延长治疗的使用寿命 该设施超出了最初的预测,可能会将膜升级推迟更多时间 年。该工厂升级和工艺优化的成功使传统的 生产与微滤采出水相当的水的设施。这篇论文 描述了上述升级以及在维持生产的同时实施升级。包括6个参考文献、表格、图表。
The Town of Slave Lake is located in the north-central area of the Province of Alberta, Canada. The Town receives its water supply from Lesser Slave Lake. The existing conventional treatment plant was constructed in 1982 and has a hydraulic capacity of 7 ML/d (1.85 MGD). As part of the improvement program, chemical feed systems are upgraded based on jar test optimization findings. A new powdered activated carbon feed system was installed by utilizing the unused space of an old clearwell. New feed systems for polymer, acid and caustic were also installed. This enabled the Town to practice enhanced coagulation to achieve required organic removals, taste and odor control, and to stabilize plant performance. Other upgrades included incorporation of tube settlers into two of the three clarifier basins (to achieve future capacity), installation of automated sludge collection systems in the clarifiers, and the conversion of a third clarifier to a disinfectant contact tank to achieve required Giardia and viral inactivation. Filter underdrains and media were also replaced. With such improvements and the practice of optimized enhanced coagulation, the water treatment plant achieved all of its treatment goals (<0.05 NTU turbidity, <20 particles [>2 um] counts/mL). The upgrades also allowed the Town to extend the service life of the treatment facility beyond its original prediction, which could postpone a membrane upgrade by many more years. The success of this plant upgrade and process optimization enabled the conventional facility to produce water that is comparable to microfiltration-produced water. This paper describes the above upgrades and implementation of upgrades while maintaining production. Includes 6 references, table, figure.
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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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