本powerpoint演示文稿的目标包括: 使用工程机械改善颗粒介质过滤 陶瓷介质；评估运营稳健性和对 化学凝固；建立基线，从中继续 机械研究；和 评估微球作为药物替代物 隐孢子虫。简要概述了颗粒介质过滤，以及实验方法，包括:初始微球试验；湖水不凝试验； 湖水半混凝和全混凝试验；还有一个 恢复研究。初步结论发现: 与传统配置相比， 陶瓷媒体可以提供 隐孢子虫去除率提高1.25对数，卵囊大小的微球去除率提高1.5对数； 在整个试验过程中，粒子计数和 废水中的浊度测量值较低 来自工程媒体； 微球与蛋白质的相关性 隐孢子虫的数量必须仍然保持稳定 经过评估，但有进行实验的潜力 在这种情况下；工程介质可能会产生浊度和颗粒 减少化学依赖性的优势 相对于传统过滤，长期 绩效仍需评估；和 粗工程介质过滤水头损失曲线 与传统媒体相似，但 初步测试表明，陶瓷介质 更大的表面粗糙度允许它保留更多 固体比传统的媒体。包括表格、数字。

The objectives of this powerpoint presentation include: improve granular media filtration using engineered ceramic media; evaluate operational robustness and dependency on chemical coagulation; establish baseline from which to continue further mechanistic studies; and, evaluate microspheres as surrogates for Cryptosporidium. A brief overview of granular media filtration is provided, along with the experimental approach that included: initial microsphere tests; uncoagulated tests on lake water; semi- and fully coagulated tests on lake water; and, a recovery study. Preliminary conclusions found that: compared to a conventional configuration, ceramic media can offer up to 1.25 log improvement in Cryptosporidium removal, and up to 1.5 log improvement in oocyst-sized microsphere removal; throughout the trials, particle counts and turbidity measurements were lower in effluents from engineered media; correlation between microsphere and Cryptosporidium counts must still be evaluated, but has potential for experiments under these conditions; engineered media may offer turbidity and particle reduction advantage with less chemical dependency relative to conventional filtration, long-term performance must still be evaluated; and, coarse engineered media filtration head loss profiles are similar to those of conventional media but preliminary tests suggest that the ceramic media's greater surface roughness allows it to retain more solids than the conventional media. Includes tables, figures.