目前正在进行一系列研究，以开发一种可用于 全面准确地预测跨膜压力随时间的变化 浸没式膜系统。这些研究调查了水动力的影响 水下中空纤维膜系统的条件和结构 膜污染。其中一项研究的结果表明 在一个过滤周期内的跨膜压力，可以使用相对简单的 简单的指数关系，是可逆和不可逆污垢的函数 系数。本研究旨在确定这一指数 这种关系可以用来准确描述跨膜的进化 连续过滤循环中浸没式膜系统中的压力。 最初定义为可逆的总污垢分数（即 可逆污垢系数）会在整个过程中固结并产生不可逆污垢 时间合并的程度似乎与合并的持续时间直接相关 过滤周期（即维护清洁周期之间的时间）。相对而言 在过滤循环中，固结程度可以忽略不计。 因此，当膜 该系统在相对较短的过滤周期内运行，在跨膜 压力随时间的变化可以用一个相对简单的指数来建模 这是三个参数的函数关系:伪稳态渗透通量 （JSS）、不可逆污垢系数（KI）和可逆污垢常数（kr）。 目前正在进行其他研究，以调查不同原料的影响 根据描述该地区演变的参数（即JSS、KI和kr）确定水源 浸没式膜系统中随时间变化的跨膜压力。 包括12个参考文献、表格和图表。

A series of studies are currently being undertaken to develop a model that can be used to accurately predict the evolution of the trans-membrane pressure over time in a full-scale submerged membrane system. These studies investigate the effects of the hydrodynamic conditions and the configuration of submerged hollow fiber membrane systems on membrane fouling. The results from one of these studies indicated that the increase in the trans-membrane pressure during one filtration cycle, could be modeled using a relatively simple exponential relationship that was a function of reversible and irreversible fouling coefficients. The present study was undertaken to determine if this exponential relationship could be used to accurately describe the evolution of the trans-membrane pressure in a submerged membrane system during successive filtration cycles. The fraction of the total fouling that was initially defined as reversible (i.e. defined by a reversible fouling coefficient) could consolidate and produce irreversible fouling over time. The extent of consolidation appeared to be directly related to the duration of a filtration cycle (i.e. time between maintenance cleaning cycles). For relatively short filtration cycles, the extent of consolidation was negligible. Therefore, when a membrane system was operated with relatively short filtration cycles, the evolution in the transmembrane pressure over time could be modeled using a relatively simple exponential relationship that is a function of three parameters: the pseudo-steady-state permeate flux (JSS), an irreversible fouling coefficient (KI) and a reversible fouling constant (kr). Additional studies are currently being conducted to investigate the effects of different raw water sources on the parameters (i.e. JSS, KI, and kr) that describe the evolution in the trans-membrane pressure over time in submerged membrane systems. Includes 12 references, tables, figures.