电渗析逆转（EDR）在中等总溶解固体（TDS）、高 加利福尼亚州欧文堡含氟和砷水平升高的硅石地下水。在期间 75天的连续测试结果表明，在最少的预处理下，EDR 能够生产始终符合欧文堡水质目标和国家标准的水 加州水质要求。对试验装置进行了优化，使给水最大化 恢复，同时保持在相对于施加电压的安全操作参数范围内，并且 可溶性盐过饱和。以低剂量添加阻垢剂和盐酸，以 浓缩物循环回路可提高回收率。再生活性氧化铝（AAR）是 也在欧文堡进行了测试。结果表明，该工艺具有良好的除砷效果 和氟化物；然而，这一过程受到环境中高浓度二氧化硅的严重影响 欧文堡水源。本文介绍了AAR和EDR中试测试的结果 是为了帮助选择和设计欧文堡新机场的一个全面设施 每天600万加仑（mgd）的水处理厂。包括3个参考文献、表格和图表。

Electrodialysis reversal (EDR) was pilot tested on moderate total dissolved solids (TDS), high silica groundwater with elevated levels of fluoride and arsenic at Fort Irwin, California. During 75 days of continuous testing, results demonstrated that with minimal pretreatment, EDR was capable of producing water that consistently met the Fort Irwin water quality goals and State of California water quality requirements. The pilot unit was optimized to maximize feedwater recovery while staying within safe operating parameters relative to applied voltage and sparingly soluble salt supersaturation. A scale inhibitor and hydrochloric acid were added at low doses to the concentrate recycle loop to enhance recovery. Activated Alumina, regenerable, (AAR) was also tested at Fort Irwin. Results indicated that this technology was capable of removing arsenic and fluoride; however, the process was heavily impacted by high concentrations of silica in the Fort Irwin source water. This article presents the results of AAR and EDR pilot testing, which was performed to help select and design a full-scale facility for the Fort Irwin new 6-million-gallon-per-day (mgd) water treatment plant. Includes 3 references, tables, figures.