对法国三座大型水处理厂进行的一项研究的目标是:量化三种地表资源及其相关处理与隐孢子虫相关的健康风险；评估使用颗粒计数器和浊度计作为评估和控制过滤过程操作的工具；确定好氧细菌孢子在资源和水处理过程中作为卵囊替代物的潜力；并且，根据正常和瞬态操作条件下的颗粒去除可靠性，确定最佳操作程序。这项研究是在三个处理未经处理的地表水的全尺寸工厂上进行的。在线传感器安装在原水和过滤水上，包括pH值、温度、流量计、浊度计（Hach 1720C分析仪）和颗粒计数器（Met一台215W分析仪，带有六个尺寸为1至300 um的通道）。 还分析了原水、沉淀水、过滤水和最终水的其他水质参数，包括微生物计数（贾第虫、隐孢子虫、大肠菌群、梭菌和需氧细菌孢子）。为了评估工艺在颗粒去除方面的效率，在3个现场收集了不同电厂运行条件下的数据，评估了几个运行参数的影响，包括快速流量变化、混凝剂用量和过滤运行时间。

The objectives of a study performed on three full-scale water treatment plants in France were to: quantify the health risk linked to Cryptosporidium for three surface resources and their associated treatments; assess the use of particle counters and turbidimeters as tools to evaluate and control filtration process operations; identify the potential for spores of aerobic bacteria to act as a surrogate for oocysts in the resources and during water treatment; and, define the best operational procedures in terms of particle removal reliability during normal and transitory operating conditions. The study was performed on three full-scale plants treating raw surface waters. On line sensors were installed on the raw and filtered waters including pH, temperature, flowmeter, turbidimeter (Hach 1720C analyzer) and particle counter (Met One 215W analyzer with six size channels from 1 to 300 um). Additional water quality parameters on the raw, settled, filtered, and final water were also analyzed including microbial counts (Giardia, Cryptosporidium, coliforms, clostridium and spores of aerobic bacteria). To evaluate the efficiency of the processes in terms of particle removals, data were collected on the 3 sites for different plant operation conditions, the impact of several operating parameters, including quick flowrate variations, coagulant dosage and filtration run time were evaluated.