首页 馆藏资源 舆情信息 标准服务 科研活动 关于我们
现行 AWWA WQTC59023
到馆提醒
收藏跟踪
购买正版
Conversion of a Conventional Water Treatment Plant into a Direct Filtration MF/UF Plant with Post-Treatment 将常规水处理厂改造为直接过滤MF/UF装置 并进行后处理
发布日期: 2003-11-02
特库姆塞水处理厂(WTP)建于1958年,是一个常规处理厂 处理圣克莱尔湖(Lake St.Clair)的佩奇岛海峡(Peche Isle Channel)原水的植物,靠近河口 底特律河。该工厂的设计产能为2730万桶。治疗系列包括 混凝、上流澄清和颗粒介质过滤。这种植物也偶尔使用 粉末活性炭(PAC)用于控制痕量阿特拉津。此外,工厂 目前,其反冲洗过滤器将排放到湖中,因此需要限制总排放量 排放至湖泊的废水中的悬浮固体浓度低于25 mg/L 水的特点是高浊度,从小于1 NTU到大于100 NTU不等, TOC低,偶尔出现高颜色和高大肠菌群计数。圣克莱尔湖是一个受欢迎的夏天 度假胜地和周围的水体被用来进行一些娱乐性的水上活动 天气变暖时,可能导致源中的粪便大肠菌群浓度升高 水 由于设施的使用年限和未来的预期需求增加,WTP处于运行状态 需要重大升级。例如,现有的上流式固体接触式澄清池没有 在高浊度事件中表现良好,可将电厂产能限制在19.5 MLD。 工厂升级也是必要的,以满足新工厂的预期消毒要求 规定。该镇考虑了几种替代方案,以改善其成品水质量,同时 满足预期的更高用水需求。微滤(MF)/超滤(UF)膜过滤的实施 与传统处理相比,它有几个优点,例如提高成品水质量, 占地面积小,易于扩展,自动化程度高。因此,该镇想要 实施膜过滤以满足其所有目标。由于空间限制 该镇土地有限,为了限制消费者的经济负担,进行了调查 膜过滤直接处理原水的可能性。解决问题 偶尔出现颜色和味道,现有的几种传统过滤器可能会 维持在膜过滤的下游,用作颗粒活性炭 床。现有的澄清池将进行改造,以处理来自膜过滤器的反冲洗水 达到排放时允许的悬浮固体浓度限值。 本文介绍了特库姆塞镇为实施膜技术而采取的方法 对其现有工厂进行过滤,尤其是针对 探讨了膜过滤在原水处理中不进行任何预处理的可行性 以及基于试点结果的膜采购流程,并将其纳入 现有工厂。包括表格、数字。
The Tecumseh Water Treatment Plant (WTP), constructed in 1958, is a conventional treatment plant that treats raw water from the Peche Isle Channel in Lake St. Clair near the mouth of the Detroit River. The design capacity of the plant is 27.3 MLD. The treatment train includes coagulation, upflow clarification and granular media filtration. The plant also occasionally uses powdered activated carbon (PAC) to control trace levels of atrazine. In addition, the plant currently discharges its filter backwash to the lake and is therefore required to limit the total suspended solids concentration in its waste discharge to the lake to below 25 mg/L. The raw water is characterized by high turbidity, ranging from less than 1 NTU to greater than 100 NTU, low TOC, with occasional high color and high coliform counts. Lake St. Clair is a popular summer vacation spot and the surrounding water body is used for a number of recreational water activities during the warmer weather which can result in high fecal coliform concentrations in the source water. Due to both the age of the facility, and expected demand increases in the future, the WTP is in need of major upgrades. For instance, the existing upflow solids contact clarifier does not consistently perform well during high turbidity events and can limit the plant capacity to 19.5 MLD. Plant upgrades are also necessary to meet the anticipated disinfection requirements of new regulations. The Town considered several alternatives to improve its finished water quality while meeting anticipated higher demand for water. Implementation of microfiltration (MF)/ultrafiltration (UF) membrane filtration offers several advantages over conventional treatment such as increased finished water quality, smaller foot print, ease of expansion and high-level of automation. Therefore the Town wanted to implement membrane filtration to meet all of its objectives. Due to space constraints dictated by limited land availability and to limit the financial burden to its consumers, the Town investigated the possibility of directly treating the raw water with membrane filtration. To address the occasional color and taste occurrences, several of the existing conventional filters would be maintained downstream of the membrane filtration and be used as granular activated carbon beds. The existing clarifier would be modified to treat backwash water from the membrane filters to meet the allowable suspended solids concentration limit upon discharge. This paper presents the approach the Town of Tecumseh had taken to implement membrane filtration into its existing plant, in particular the results of the pilot study that was conducted to investigate the feasibility of membrane filtration in treating raw water without any pretreatment and the membrane procurement process based on pilot results and their incorporation into the existing plant. Includes tables, figures.
分类信息
发布单位或类别: 美国-美国给水工程协会
关联关系
研制信息
相似标准/计划/法规