随着2006年初砷规则的颁布，许多水供应商不得不 采取措施，以满足还含有其他砷的水的减少砷MCL 0.010 mg/L 超过一级或二级标准的容器，可能会同时符合 这将非常昂贵。该项目的目标是确定最具成本效益的解决方案 同时去除地下水中的砷和氟。 Coyote Springs开发区是内华达州拉斯维加斯北部的一个总体规划社区 将使用地下水井作为唯一的饮用水源。水源井中含有 砷平均含量为0.014 mg/L，氟平均含量为2.1 mg/L，超过联邦和州标准 这两种污染物的规定MCL。初步压滤器先导试验表明: 砷和氟化物都可以在40到100%的浓度下被降低到远低于规定的浓度 175毫克/升明矾。然而，在如此高的明矾剂量下存在问题，例如铝和铝 浊度突破，以及短过滤器运行。包括表格、数字。

With the Arsenic Rule being promulgated in early 2006, many water purveyors are obliged to take action to meet the reduced arsenic MCL of 0.010 mg/L. For water that also contains other containments exceeding the primary or secondary standards, simultaneous compliance could be very costly. The objective of this project was to determine the most cost-effective approach to simultaneously remove arsenic and fluoride from groundwater. Coyote Springs Development area is a master planned community north of Las Vegas, Nevada that will use groundwater wells as its only potable water source. The source water wells contain on average 0.014 mg/L of arsenic and 2.1 mg/L of fluoride, exceeding the federal and state regulated MCL for these two contaminants. Preliminary pressure filter pilot testing indicated that both arsenic and fluoride can be reduced to well below the regulated concentration with 40 to 175 mg/L of alum. However, problems exist at such high alum doses, such as aluminum and turbidity breakthroughs, as well as short filters runs. Includes tables, figures.