无烟煤、双介质和颗粒活性炭等滤层的坍塌脉冲条件尚未确定。本研究的一个目标是确定这些不同滤床的崩塌脉冲模式对应的空气和水流量，并将结果与理论崩塌脉冲方程的浓缩形式进行比较。另一个目标是开发一种定量方法，以补充观测崩塌脉冲数据，并获得有关现象的额外信息。最后，将从这两种测量方法获得的数据与可用的清洁数据进行比较，以确定塌陷脉冲模式是否会导致最清洁的滤床。

The collapse-pulsing condition has not yet been determined for filter beds such as anthracite coal, dual media, and granular activated carbon. One objective of this study is to determine the air and water flow rates corresponding to the collapse-pulsing pattern for these various filter beds and compare the results with the condensed form of the theoretical collapse-pulsing equation. Another objective is to develop a quantitative method to supplement the observational collapse- pulsing data and gain additional information on the phenomena. Finally, the data gained from these two methods of measurement will be compared with available cleaning data to determine if the collapse-pulsing pattern results in the cleanest filter bed.