关于溴酸盐控制法规的演变，有必要了解臭氧接触器的液压系统。对法国努伊滨海工厂的臭氧接触器（A型和B型）进行了示踪试验。结果表明，水力效率很低（0.5）。这些结果已用于验证这些臭氧接触器的计算流体动力学（CFD）建模，偏差小于10%。然后，通过在隔室中添加挡板，对这些接触器进行了数值优化。仿真结果表明，对于油箱a和油箱B，我们可以分别实现0.7和0.8的液压效率。 在Gnrale des Eaux进行的溴酸盐模型表明，在相同的消毒水平下，这种改进可导致溴酸盐生成量减少30%至40%。包括4个参考文献、图表。

With respect to the evolution of the regulation on bromate control, a knowledge of hydraulics in the ozone contactor is necessary. Tracer tests have been performed on the ozone contactors (type A and B) of the Neuilly-sur-Marne plant (France). Results have shown that the hydraulic efficiency was poor (0.5). These results have been used to validate a computationfluids dynamics (CFD) modeling of these ozone contactors with a deviation of less than 10%. Then numerical optimizations of these contactors have been performed by adding baffles in compartments. Simulations showed that we could achieve a hydraulic efficiency of 0.7 and 0.8 for tank A and B respectively. Bromate models performed at the Gnrale-des-Eaux have shown that such improvement could lead to a reduction of 30% to 40% in bromate formation, for the same level of disinfection. Includes 4 references, figures.