为了帮助应对干旱造成的潜在供水短缺，加利福尼亚州洛杉矶市西盆地市政供水区启动了一个大型水资源回收项目。该项目从Hyperion处理厂接收经过处理的二级废水，并将其通过60英寸的强制干管泵送至高级废水处理厂。经过进一步处理后，再生水通过广泛的分配系统泵送。西盆地处理厂将通过两个独立的工艺链生产再生水。景观灌溉、工业和商业用水通过化学添加、絮凝、过滤和消毒进行处理，以满足加利福尼亚州饮用水水质标准。 注入地下水的水经过化学添加、脱碳、石灰处理、再碳化、过滤、反渗透、后脱碳和消毒处理。再生水通过广泛的分配系统泵送。再生水用户将包括托儿所、高尔夫球场、混凝土厂、炼油厂、园林绿化、绿地、地毯染色厂、发电厂、机场和海水屏障。该项目将是美国最大的再生水项目。本文描述了再生水分配系统的规划、设计、成本和施工方面。

To help combat potential water supply shortfalls due to drought, the West Basin Municipal Water District in Los Angeles, California, embarked on a major water reclamation project. The project takes treated secondary effluent from the Hyperion Treatment Plant and pumps it through a 60-inch forcemain to an advanced wastewater treatment plant. After further treatment, the reclaimed water is pumped through an extensive distribution system. The West Basin Treatment Plant will produce reclaimed water through two separate process chains. Landscape irrigation, industrial and commercial water is treated by chemical addition, flocculation, filtration and disinfection to meet California water quality standards for drinking water. Water used for injection into groundwater is treated with chemical addition, decarbonization, lime treatment, recarbonization, filtration, reverse osmosis, post-decarbonization and disinfection. Reclaimed water is pumped through an extensive distribution system. Reclaimed water users will include nurseries, golf courses, concrete plants, oil refineries, landscaping, greenbelts, carpet dyers, power plants, airports and the seawater barrier. The project will be the largest reclaimed water project in the United States. This paper describes the planning, design, costs and construction aspects of the reclaimed water distribution system.