郑州刘湾水厂制水规模40万m~3/d,原水以南水北调中线原水为主,水库水和黄河水作为补充。在设计阶段兼顾3种差别显著的原水水质,选择了以预臭氧氧化、平流沉淀、臭氧—生物活性炭吸附、砂滤的净水工艺路线,其中采用了前置的臭氧—活性炭工艺,并在运行中对混凝剂投加等进行了优化,形成了安全高效、适应原水水质变化的净水流程。经两年运行,水厂出厂水质优良,运行稳定,平均浊度0.1~0.2NTU,平均耗氧量1.5mg/L以下,氨氮小于0.1mg/L,夏季藻类未检出,采用带式压滤机干泥含固率>30%。 Zhengzhou Liuwan Waterworks scale of 400000 m ~ 3 / d, the original water to the South Water North Central Line of the original water, reservoir water and the Yellow River water as a supplement. In the design stage, taking into account three significant differences in raw water quality, the selection of a pre-ozone oxidation, advection sedimentation, ozone - biological activated carbon adsorption, sand filtration water purification process, which uses the pre-ozone - activated carbon process, and running In the coagulant dosing, etc. have been optimized to form a safe and efficient to adapt to changes in the quality of raw water purification process. After two years of operation, the water quality of the factory was excellent and the operation was stable. The average turbidity was 0.1-0.2 NTU, the average oxygen consumption was less than 1.5 mg / L, the ammonia nitrogen was less than 0.1 mg / L, and summer alga was not detected. Dried mud with solid rate> 30%.