对于许多公用事业公司来说，锰含量升高带来的美学问题是至关重要的 最重要的问题。难看的沉淀物和有色水问题会造成数不清的后果 一些系统中的投诉。即使锰含量低于以下，也可能出现这种情况 0.05 mg/L二级标准，导致一些公用事业公司将内部目标设定为0.015或0.02 本文给出了两个项目的结果。 近年来，海德公园水处理厂收到了客户投诉 被描述为“脏水”或“粉红水”。此外，深棕色或黑色沉积物 在一些工厂设备和clearwell的墙壁上形成，并形成一层黑色沉积物/薄膜 在一个储罐中观察到。这些投诉和存款被确定是由以下原因引起的: 在工艺变更后，锰通过处理厂，以减少 消毒副产物水平。 斯坦福德水处理厂的升级目前正在设计中。原水供应 是一个经历分层的水库。在夏末，锰含量升高 底水缺氧条件引起的水位，以及 geosmin和MIB是主要的治疗问题。锰由诱导的绿砂控制 在无烟煤或砂滤器之前添加氯时产生的影响。转变 用GAC过滤器控制味觉和气味事件可能会抑制诱导的绿带效应。 控制锰虽然不是健康问题，但对维持消费者信心至关重要。 本文的结果将有助于在控制锰方面遇到困难的公用事业公司，以及正在考虑改变处理方法以减少DBP或将味道和气味控制在最低限度的公用事业公司 以不影响除锰的方式进行。包括桌子。

For many utilities the aesthetic problems that accompany elevated manganese levels are of paramount concern. Unsightly deposits and colored water problems cause innumerable complaints in some systems. Such conditions can occur even when manganese levels are below the 0.05 mg/L secondary standard, causing some utilities to set internal goals of 0.015 or 0.02 mg/L. Results from two projects are presented in this paper. In recent years, the Hyde Park Water Treatment Plant has received customer complaints described as "dirty water" or "pinkish water". In addition, dark brown or black deposits have formed on some of the plant equipment and the walls of the clearwell and a dark sediment/film was observed in a storage tank. These complaints and deposits were determined to be caused by manganese passing through the treatment plant after process changes were implemented to reduce disinfection byproduct levels. Upgrades to the Stamford Water Treatment are currently being designed. The raw water supply is a reservoir that undergoes stratification. During the late summer period, elevated manganese levels caused by anoxic conditions in the bottom waters and taste and odor episodes caused by geosmin and MIB are the major treatment concerns. Manganese is controlled by the induced-greensand effect that occurs when chlorine is added prior to anthracite or sand filters. Conversion to GAC filters to control the taste and odor events may inhibit the induced-greensand effect. Manganese control, although not a health issue, is essential for maintaining consumer confidence. The results of this paper will help utilities that experience difficulty in controlling manganese, and also those utilities that are considering treatment changes to reduce DBPs or control taste and odors to do so in a manner that will not compromise manganese removal. Includes tables.