本powerpoint演示文稿首先简要概述了日内瓦市新建水处理设施的必要性。选择膜软化作为处理工艺，对铁和锰进行预处理。进行了一项初步研究，以确定 预处理要求，现有污水中的原水和过滤浅井水 植物经反渗透试验处理。现有工厂 由氯氧化和压力组成 介质过滤。由两名飞行员进行的初步试验:各种膜的初步筛选和 使用2.5英寸膜的预处理选项 元素回收率为50%；进一步研究了优化条件 使用回收率为80%的4“膜。两种不同的膜进行了平行试验， 使用2.5“进行预处理和不进行预处理 膜。提供了全尺寸设施的工艺设计参数，以及工艺示意图。 包括数字。

This powerpoint presentation begins by providing a brief overview of the need for a new water treatment facility for the city of Geneva. Membrane softening was selected as the treatment process, with pretreatment for iron and manganese. A pilot study was conducted to determine pretreatment requirements, raw and filtered shallow well water from existing plant were treated by RO pilot. Existing plant consisted of oxidation with chlorine and pressure media filtration. Pilot testing conducted with two pilots: initial screening of various membranes and pretreatment options using 2.5" membrane elements at 50% recovery; and, further investigation of optimized conditions using 4" membranes at 80% recovery. Two different membranes were tested in parallel, with and without pretreatment using 2.5" membranes. Process design parameters for the full scale facility are provided, along with process schematic. Includes figures.