在一个试验装置中，评估了预分区对法国巴黎塞纳河水处理的影响，该试验装置由碱性多氯化铝（PAC）絮凝和沉淀组成。在所有研究的处理水平下，预臭氧显著增加了浑浊度、颗粒数量和体积、化学需氧量和紫外线（UV）吸收率的去除，最佳臭氧剂量似乎约为0.8 mg/L。研究的臭氧处理水平为0.3-1.2 mg/L，PAC为15-60 mg/L。臭氧的有利影响随着未处理水的pH值和颗粒数的增加而增加。颗粒去除率的增加似乎部分源于絮体尺寸和沉降速度的增加。 包括6个参考文献、表格、图表。

The effects of preozonation on the treatment of water from the Seine River in Paris, France were evaluated in a pilot plant consisting of flocculation with basic aluminum polychloride (PAC) followed by sedimentation. Preozonation significantly increased the removals of turbidity, particle numbers and volumes, chemical oxygen demand, and ultraviolet (UV) absorbance at all treatment levels investigated, with the optimum ozone dose appearing to be about 0.8 mg/L. Treatment levels investigated were 0.3-1.2 mg/L for ozone and 15-60 mg/L PAC. The favorable effects of ozone increased with pH and the particle count of the untreated water. The increases in particle removals appeared to stem partly from increases in floc size and settling velocity. Includes 6 references, tables, figures.