对于依赖地下水作为唯一饮用水源的房主来说，佛罗里达州私人浅井的硝酸盐污染是一个新出现的问题。佛罗里达州环境监管部（FDER）最近进行的一项调查（1990年）显示，在主要位于佛罗里达州中部的1369口私人水井中，有306口发现硝酸盐含量过高，一般在15至35 mg/L之间。柑橘生产的肥料被认为是主要原因。为了纠正硝酸盐污染问题，FDER资助了一个研究项目，以寻找小规模的解决方案，即。 e、 ，调查使用点（POU）系统去除硝酸盐的可行性。本文描述了使用三醋酸纤维素（CTA）和薄膜复合物（TFC）反渗透（RO）膜去除硝酸盐项目的结果。在实验室和现场环境中测定了六种不同商业POU-RO系统的硝酸盐截留率。根据系统制造商的报价和现场操作收集的数据，对这些POU RO系统进行了成本分析。

Nitrate contamination of shallow, private wells in Florida is an emerging problem to homeowners who rely on groundwater as their only potable water source. A recent survey (1990) conducted by the Florida Department of Environmental Regulation (FDER) revealed that 306 out of 1369 private wells sampled, primarily in Central Florida, were found to have excessive levels of nitrate, generally ranging from 15 to 35 mg/L. Fertilizer from citrus production is thought to be the major contributor. In order to correct the nitrate contamination problem, FDER funded a research project to look for solutions on a small scale, i.e., investigating the feasibility of point of use (POU) systems for nitrate removal. This paper describes the results from the nitrate removal project using cellulose triacetate (CTA) and thin film composite (TFC) reverse osmosis (RO) membranes. The nitrate rejection for six different commercial POU RO systems was determined in a laboratory and field environment. A cost analysis was made for these POU RO systems, based on price quotes from the system manufacturers and data collected from field operation.