将有3000多家社区供水商参与 必须像美国一样处理砷的去除 环境保护署的新上限 污染物水平（MCL）要求生效 效应作者进行这项研究是为了开发一种 减少砷离子产生废物的方法 在水处理过程中交换以去除砷。他们 发现离子交换与直接盐水回用是一种更有效的方法 从…中移除…的高效且经济的过程 地下水比更常用的过程。盐 再生消耗量减少50%，并消耗掉 盐水可重复使用10-15次或更多。这个过程 将为社区提供更具成本效益的替代方案 以满足新的MCL要求。包括19个参考文献、表格和图表。

More than 3,000 community water suppliers will have to treat for arsenic (As) removal as the US Environmental Protection Agency's new maximum contaminant level (MCL) requirements come into effect. The authors conducted this study to develop a method for minimizing the waste produced by As ion exchange during water treatment for As removal. They found that ion exchange with direct brine reuse is a more efficient and cost-effective process for removing As from groundwater than more commonly used processes. Salt consumption for regeneration is cut by 50%, and spent brine can be reused 10-15 times or more. This process will give communities a more cost-effective alternative for meeting new MCL requirements. Includes 19 references, tables, figures.