本文提出了一项研究，由AWWA研究基金会（水研究基金）资助。 2009年1月1日的基础上，探讨有机氮化合物的影响 低压（LP）可逆和不可逆污垢（以溶解有机氮——DON测量） 膜以及预处理条件，以优化有机氮的去除和 尽量减少膜污染。本文给出了模型实验工作的初始数据 含氮化合物。本研究的一个关键方面是研究DON对膜污染的影响 模拟全尺寸操作的台架规模系统。聚偏氟乙烯（PVdF） 对基于膜外的样品进行了测试。纤维的内径（ID）为0.8 mm， 外径（OD）为1.9毫米，标称膜孔径为0.04微米 （制造商提供的数据）。使用的技术 允许纤维的下端松动，膜的一端 模块应打开，以便在反洗过程中更好地去除固体。这个盆栽 这项技术还可以更容易地去除一小块中空纤维进行表面分析。 在安装之前，进行气泡测试，以检查组装组件上的膜泄漏 测试。膜系统的建造是为了使真空或加压 可以利用操作模式。在这个初始阶段，使用真空泵进行试验 模式，这是该类型膜在先导和满标度下的实际运行模式 利用。三个独立的压力传感器用于监测进口和出口处的压力 膜组件的出口和反洗压力。膜系统运行正常 在恒定流量下，死端过滤，定期反冲，并监测TMP和 渗透量。定期进行化学清洗。包括表格，数字。

This paper presents a study, funded by the Awwa Research Foundation (Water Research Foundation as of January 1, 2009), that explores the effects of organic nitrogen compounds (measured as dissolved organic nitrogen -- DON) on reversible and irreversible fouling of low pressure (LP) membranes as well as pretreatment conditions to optimize organic nitrogen removal and minimize membrane fouling. The paper presents initial data for experimental work with model nitrogen containing compounds. One critical aspect of this research is the study of the impact of DON on membrane fouling for a bench-scale system that imitates full-scale operation. Poly(vinylidene-fluoroethylene) (PVdF) based outside-in membrane samples were tested. The fiber has an inner diameter (ID) of 0.8 mm, outer diameter (OD) of 1.9 mm, and a nominal membrane pore size of 0.04 micron (manufacturer supplied data). The technique that was used allowed the lower ends of the fibers to be loose, and for one end of the membrane module to be open which obtained better removal of solids during backwashing. This potting technique also makes it easier to remove a small piece of the hollow fiber for surface analyses. An air bubble test was conducted to check for membrane leakage on assembled modules prior to testing. The membrane system was built so that either vacuum or pressurized operational modes can be utilized. In this initial phase, tests were conducted using the vacuum mode, which is the actual operation mode at pilot and full scales for the type of membrane utilized. Three separate pressure transducers were used to monitor the pressure at the inlet and outlet to the membrane module and the backwash pressure. The membrane system was operated at constant flux, dead-end filtration, with periodic backflushing and monitoring of TMP and permeate volume. Chemical washing was conducted periodically. Includes table, figures.