溶解气浮作为饮用水生产的主要澄清阶段，对于处理含藻水和低浊度、高色度水特别有效。与沉淀法相比，浮选法有几个工艺优势，可以产生更好的水质；它可以在高表面负荷下运行，从而形成相对较小且较浅的电厂；它可以快速启动，在45分钟内达到稳定的水质。此外，产生的污泥的固体浓度明显高于沉淀产生的污泥。本文讨论了溶解气浮装置的设计参数，详细介绍了絮凝池和浮选池的设计、空气饱和系统、微气泡的产生以及可使用的不同污泥去除系统。给出了用于澄清几种原水的浮选设备的性能数据，特别强调了藻类的处理- 满载的水和低浊度、高颜色的水。考虑到资本和运营成本，还对浮选和沉淀进行了成本比较。这两种工艺的总成本相似。最终的工艺选择将取决于两种工艺提供的额外优势。包括13个参考文献、表格、图表。

Dissolved-air flotation as a primary clarification stage for the production of potable water is particularly effective for the treatment of algae-laden waters and low-turbidity, highly colored waters. Flotation has several process advantages over sedimentation it can produce better water quality; it can be operated at high surface loadings, resulting in relatively small and shallow plants; and it can be started up quickly, with a steady water quality being achieved within forty-five minutes. Also, the solids concentration of the sludge produced is significantly higher than that of sludge produced by sedimentation. This article discusses the design parameters for dissolved-air flotation plants and gives detailed information of the design of flocculation and flotation tanks, the air saturation system, the production of microbubbles, and the different sludge removal systems that can be used. Performance data are given for flotation plants used for the clarification of several raw waters, with special emphasis on the treatment of algae-laden waters and low-turbidity, highly colored waters. A cost comparison between flotation and sedimentation is also presented, taking into account both capital and operating costs. The overall costs of the two processes are similar. The final process selection will depend on the additional advantages offered by both processes. Includes 13 references, tables, figures.