In this work, UV–vis absorption spectrum of the membrane integrity analysis based on slopes of log-transformed absorbance spectra, differential absorbance spectroscopy (DAS), and absorption coefficient α(254) were studied at different number of breakage fibers and filtration times. Moreover, we analyze the influence of Fe²⁺ and Ca²⁺concentration on UV spectrum detection results. Cluster analysis and the change ratio R_s were used to determine the dissolved organic matter (DOM) leakage stages. As a result, the correlation coefficient between slope_280-350 value and the number of breakage fibers is 0.901. Seven gaussian bands were successfully model from the DAS, and A4 (312 nm), A5 (339 nm), A6 (367 nm) were chosen to indicate the extent of breakage fiber. Peak 4(A4) is minimally affected by ions concentration. The α(254) could be used as a good indicator for detecting industrial wastewater treatment process which correlation coefficient between the number of breakage fibers is 0.955. The DOM leakage process was divided into three stages which were bulk leakage stage, development stage and stabilization stage. The UV-vis absorption spectrum can effectively detect the membrane integrity more sensitive than particle counter and three analyse methods are suitable for different substance in feed water.

在这项工作中，研究了在不同断裂纤维数量和过滤时间下，基于对数转换的吸收光谱，差吸收光谱（DAS）和吸收系数α（254）的斜率的膜完整性分析的紫外可见吸收光谱。此外，我们分析了Fe ²⁺和Ca ²⁺浓度对紫外光谱检测结果的影响。聚类分析和变化率R _s用于确定溶解有机物（DOM）的泄漏阶段。结果，斜率_280-350之间的相关系数值和断裂纤维的数量为0.901。从DAS成功地建立了七个高斯谱带，并选择了A4（312 nm），A5（339 nm），A6（367 nm）来表示断裂纤维的程度。峰4（A4）受离子浓度的影响最小。α（254）可作为检测工业废水处理过程的良好指标，其断裂纤维数之间的相关系数为0.955。DOM泄漏过程分为三个阶段，分别是本体泄漏阶段，开发阶段和稳定阶段。紫外-可见吸收光谱可以比颗粒计数器更有效地检测膜的完整性，三种分析方法适用于给水中的不同物质。