1991年，在阿卡迪亚水处理厂现有的500万加仑蓄水池中安装了机械表面曝气（MSA）系统，以去除地下水中的挥发性有机化合物（VOCs），主要是三氯乙烯（TCE）。本文介绍了新MSA系统测试程序的结果。测试的主要目的是:证明该系统能够将TCE从软化地下水中去除到饮用水最大污染物水平（MCL）5 ug/L以下；并证明气相颗粒活性炭（GAC）排放控制系统符合当地空气质量管理区的排放要求。从这些研究中获得的数据可供电厂操作员用于协助他们操作MSA系统。

A mechanical surface aeration (MSA) system was installed in 1991 in an existing five-million gallon reservoir at the Arcadia Water Treatment Plant to remove volatile organic chemicals (VOCs), principally trichloroethylene (TCE) from the groundwater source. This paper presents the results of the test program for the new MSA system. The primary purposes of the testing were: to demonstrate the system's ability to remove TCE from a softened groundwater to below its drinking water maximum contaminant level (MCL) of 5 ug/L; and to demonstrate that the vapor phase granular activated carbon (GAC) emission control system meets the local air quality management district's emission requirements. The data obtained from these studies can be used by the plant operators to assist them in operating the MSA system.