滨海蒙特勒伊饮用水处理厂由两条平行的处理路径组成: 传统的生物途径，以及自1999年9月开始运行的纳滤途径， 生产37MGD，配备NF200B-400 8英寸螺旋元件（陶氏）。 部分挑战是在处理过的地表水上运行大型纳滤装置， 含有大量颗粒和溶解物质。事实上，由于全面的步骤是 投入使用后，观察到透水性略有下降，并且 清洁工作并不是一成不变的。为了理解这一现象，对 污垢已经被清除。输入参数为清洁后的运行时间和 给水特性。 每个处理步骤后的水质和八个阶段的渗透性 单位记录在数据库中。自上次清洗以来的运行时间也被添加到这些 数据在此基础上，计算了每种材料的透水性模型（PLS回归） 八个单位。对于所有模型，清洗后的运行时间是膜的主要进水参数 污垢。颗粒数和总有机碳含量的增加加速了污垢的形成 虽然硬度、硫酸盐含量等化学参数的变化似乎 对膜堵塞有轻微影响。 膜污染的建模将有助于估计膜的寿命和 来规划他们的替代者。 包括参考资料、表格、图表。

The M¿ry-sur-Oise drinking water treatment plant consists of two parallel treatment paths: a conventional biological path, and a nanofiltration path that has been operating since September 99, producing 37 MGD and is equipped with NF200B-400 8-inch spiral elements (DOW). Part of the challenge was the operation of a large nanofiltration unit on treated surface water, containing high levels of particles and dissolved materials. Indeed, since the full-scale step was brought in service, a slight loss in water permeability has been observed and the effectiveness of the cleaning has not been constant. In order to understand this phenomenon, a statistical modelling of the fouling has been carried out. The input parameters are the running time after cleaning and the feedwater characteristics. The water quality after each treatment step and the water permeability of each stage of the eight units are recorded in a database. The running time since the last cleaning was also added to these data. On this basis, a model of water permeability (PLS regression) has been calculated for each of the eight units. For all models, the running time after cleaning was the main influent parameter on the membrane fouling. An increase in particle counts and Total Organic Carbon content accelerated the fouling phenomenon, while changes in chemical parameters such as hardness, sulphate content, seemed to have a slight impact on the membrane clogging. The modelling of the membrane fouling will be useful to estimate the lifetime of the membranes and to program their replacement. Includes reference, tables, figures.