在运行的前17个月内，压力过滤器以1.8 MGD（78.9 l/s）的水流量运行 处理厂开始出现问题。操作员首先通过缩短时间观察到问题 过滤器运行。当其中一个舱口爆炸时，操作员第一次看到的是什么 在他的过滤器里。他看到一层橙色的黏液覆盖着内墙。进一步的 对所有过滤器的检查显示，在介质顶部和顶部有细沉积物堆积 泥球，除了橙色的胶片。尽管第二年采取了纠正措施 该工厂的产能已降至设计产能的一半，远低于其运营效率和所需产能 大量维护。 制造商和工程师的审查建议更换介质，因为 将工厂的糟糕表现归咎于受损的介质。压碎的原因是 不清楚的。在没有直接调查的情况下，很可能会发生媒体故障 重现 这项研究是作为一个学术研究项目进行的，并纳入了分析 评估和物理测试，适用于压力的传统重力系统 过滤。作者与当地水利部门和制造商合作 在东北大学理工学院的支持下进行了这项独立的植物研究 工程它能够有效地识别设备缺陷，并加以实施 结构调整，提高植物生产力，延长培养基寿命。包括10个参考文献、表格和图表。

Within the first 17 months of operation, the pressure filters at a 1.8 MGD (78.9 l/s) water treatment plant began having trouble. The operator first observed problems by a shortening of the filter run. When one of the hatches blew out, the operator had his first look at what was going on inside of his filters. He saw an orange slime coating the interior walls. Further inspection of all the filters showed an accumulation of fine sediment on the top of the media and mud balls, in addition to the orange film. In spite of corrective actions by its second year the plant was reduced to half the design capacity, well below its operating efficiency and required extensive maintenance. Review by the manufacturer and engineer recommended media replacement, as they attributed the plant's poor performance to damaged media. The cause of the crushing was unclear. In the absence of a directed investigation it was probable that media failure would recur. This study was performed as an academic research project and incorporated analytical evaluation and physical testing, adapted from conventional gravity systems for pressure filtration. Working together with the local water department and manufacturers, the authors conducted this independent plant study with the support of Northeastern University's College of Engineering. It has enabled effective identification of equipment shortcomings, implemented structural corrections, improved plant productivity and increased media life. Includes 10 references, tables, figures.