俄亥俄州费尔伯恩市位于辛辛那提东北约70英里处，有一个供水服务区 人口32000。社区的主要水源是每天500万加仑（mgd） FWTP（费尔伯恩水处理厂）。FWTP从一口井中的四口井获取原水 马德河附近的田地。这些来源，虽然不考虑表面的影响 水的铁和锰含量升高。目前的处理方法包括铁和锰 通过曝气氧化去除，然后沉降、高锰酸盐和聚合物添加，以及 通过传统砂介质的重力过滤和氯化。不幸的是，目前的治疗 该工艺在去除铁和锰方面仅取得了些许成功。 优化现有FWTP的铁和锰去除，减少或消除铁和锰的使用 昂贵的氧化剂，如高锰酸盐，该市授权建设一个试点工厂。飞行员 工厂由两个4英寸的透明PVC柱组成，这些柱建造在FWTP的过滤廊道内。通过 在该位置建造工厂时，供应给先导管的水（包括反冲洗水） 与工厂现有过滤器的供应相同。这项初步研究调查了铁和铁 通过各种介质、流速和氧化方法去除锰。媒体在试验中分析 植物包括传统的沙子（激活以诱导自然的绿沙效应或NGE）、绿沙 软锰矿。氧化方法包括使用曝气水和非曝气水，以及添加 过滤前的氯含量。 本文描述了FWTP中试的结果。不同媒体的有效性 然后检查各种过滤速率。 提出了最佳的过滤介质，并修正了操作条件 推荐的流程。最后，与实施这些建议相关的成本节约 整个工厂都在计划中。包括6个参考文献、表格、图表。

The City of Fairborn, Ohio, located roughly 70 miles northeast of Cincinnati, has a water service area population of 32,000. The community's primary source of water is the 5.0 million gallons per day (mgd) Fairborn Water Treatment Plant (FWTP). The FWTP obtains raw water from four wells located in a well field adjacent to the Mad River. These sources, though not considered under the influence of surface water, have elevated levels of iron and manganese. Treatment presently consists of iron and manganese removal via oxidation through aeration, followed by settling, permanganate and polymer addition, AND by gravity filtration by conventional sand media and chlorination. Unfortunately, the current treatment process has been only marginally successful in removing iron and manganese. To optimize iron and manganese removal at the existing FWTP and reduce or eliminate the use of expensive oxidants like permanganate, the City authorized the construction of a pilot plant. The pilot plant consisted of two, four-inch clear PVC columns constructed within the FWTP's filter gallery. By constructing the plant in this location, the water supplied to the pilot tubes (including backwash water) was identical to that supplied to the plant's existing filters. The pilot study investigated iron and manganese removal by various media, flow rates and oxidation methods. Media analyzed in the pilot plant included conventional sand (activated to induce a Natural Greensand Effect or NGE), greensand and pyrolusite. Oxidation methods included the use of aerated versus non-aerated water and the addition of chlorine prior to filtration. This paper describes the results of the FWTP pilot tests. The effectiveness of the various media at various filtration rates are then examined. The optimal filter medium is presented and revised operating processes recommended. Finally, the cost savings associated with implementing these recommendations plantwide are projected. Includes 6 references, table, figures.