为准备与消毒剂/消毒副产品规则预期通过相关的新水处理法规，费城水务局（PWD）启动了几项计划，以满足减少的总三卤甲烷MCL。作为该项目的一部分，巴克斯特水处理厂于1995年开始进行工厂试验，以确定高锰酸钾（KMnO4）作为预氧化剂和氯气和二氧化氯的替代化学品的有效性。本试验旨在研究几个目标，包括高锰酸钾在减少味道和气味以及减少消毒副产物形成方面的有效性。本文详细介绍了普华永道工厂试验和最终将其三个预氧化处理设施转化为高锰酸钾相关的操作和水质问题。

To prepare for the new water treatment regulations associated with the anticipated passage of the Disinfectant/Disinfection Byproducts Rule, the Philapdelphia Water Department (PWD) launched several initiatives in preparation to meet reduced Total Trihalomethane MCLs. As part of this program the Baxter WTP began a plant trial in 1995 to determine the effectiveness of potassium permanganate (KMnO4) as a preoxidant and substitute chemical for chlorine and chlorine dioxide. This trial was designed to look at several objectives, including the effectiveness of KMnO4 in the reduction of tastes and odors as well as the reduction in the formation of disinfection byproducts. This paper details both the operational and water quality issues associated with PWD's plant trial and eventual conversion of its three preoxidation treatment facilities to potassium permanganate.