随着反渗透技术广泛应用于煤矿井下水处理系统，矿井水的水质复杂性容易造成反渗透膜污染，大幅度地影响了膜组件的除盐效率及使用寿命。为探讨造成山东新巨龙煤矿综采工作面集成供液系统水处理装置反渗透膜组件失效的原因，通过对源水水样中浊度、硬度、阴阳离子浓度及总有机物等进行检测和分析，依据Visual MINTEQ计算环境水化学平衡工具，初步建立了污染物预测模型。采取肉眼检测、烧矢量(LOI)、扫描电镜(SEM)和藤原测试方法，揭示出反渗透系统运行失败的机理。基于膜元件内部在浓水通道和膜表面发现大量固体颗粒，反渗透膜片存在由颗粒物造成的不同程度的机械损伤，推断其前端的保安过滤器存在失效的可能。考虑到膜表面污染物组成多为结晶状态下的无机盐，膜片存在少量有机污染现象，无氧化性污染物进入反渗透系统，排除了有机物污染造成系统失效的可能性。基于Visual MINTEQ的化学平衡模型对结垢物组成进行分析，结果显示其主要成分为钙离子，通过对膜结垢样品组成进行定量分析试验，验证了污染物预测模型的准确性。结果表明，该矿井下供水的浊度和硬度较高，造成反渗透膜的表面结垢及颗粒沉积是系统运行失效的主要原因。针对失效原因，提出了定期对保安过滤器进行检查维护、在RO预处理阶段增加阻垢剂等措施和新型水处理工艺的研究方向。

As reverse osmosis technology is widely used in coal mine water treatment systems, the complexity of mine water quality is likely to cause reverse osmosis membrane pollution, which greatly affects the desalination efficiency and service life of membrane modules. In order to explore the reasons for the failure of the reverse osmosis membrane component of the water treatment device of the integrated liquid supply system in the fully-mechanized mining face of Shandong Xinjulongcoal mine, the turbidity, hardness, anion and cation concentration and total organic matter in the source water sample were detected and analyzed. Based on the Visual MINTEQ calculation tool for environmental water chemical balance, a pollutant prediction model was initially established. Visual inspection, LOI, scanning electron microscope (SEM) and Tengyuan test methods were adopted to reveal the mechanism of the failure of the reverse osmosis system. Based on the fact that a large number of solid particles were found inside the membrane element in the concentrated water channel and the membrane surface, the reverse osmosis membrane has varying degrees of mechanical damage caused by the particles, and it is inferred that the secur[LM]ity filter at the front end may fail. Considering that the pollutants on the membrane surface are mostly inorganic salts in a crystalline state, there is a small amount of organic pollution in the membrane, and non-oxidizing pollutants enter the reverse osmosis system, which eliminates the possibility of system failure caused by organic pollution.Based on the chemical equilibrium model of Visual MINTEQ, the composition of the fouling material was analyzed, and the results show that its main component was calcium ions. The quantitative analysis test on the composition of the membrane fouling sample verified the accuracy of the pollutant prediction model. The results show that the turbidity and hardness of the underground water supply in the mine are relatively high, and the fouling and particle deposition on the surface of the reverse osmosis membrane are the main reasons for the failure of the system. In view of the failure reasons, measures such as regular inspection and maintenance of the security filter, adding scale inhibitors in the RO pre-treatment stage, and the research direction of new water treatment processes are proposed.