The application of reverse osmosis (RO) is restricted with scaling and organic fouling problems. In this work, we reported a series of RO membranes with excellent anti-scaling and anti-fouling properties, which were fabricated through post-modification with small molecules consisting of sulfonate or phosphate groups, including L-O-Phosphoserine (L-SOP), 3-Amino-1-propanesulfonic acid (APSA) and Alendronate sodium trihydrate (AS). Detailed characterizations of modified membranes were carried out, indicating that the modified membranes had smoother surface, better hydrophilic properties and more negatively charged surface. More importantly, after simulated scaling and fouling experiments, the modified membranes exhibited lower flux decline rates and higher flux recovery ratios. The mechanisms for anti-scaling and anti-fouling properties were analyzed. The modified membranes would have promising application due to its easy-to-operate method and excellent scaling and fouling resistances.

反渗透（RO）的应用受到结垢和有机污垢问题的限制。在这项工作中，我们报道了一系列具有优异的防垢和防污性能的反渗透膜，这些反渗透膜是通过对包含磺酸根或磷酸根基团的小分子（包括LO-磷酸丝氨酸（L-SOP），3 -氨基-1-丙烷磺酸（APSA）和阿仑膦酸钠三水合物（AS）。进行了改性膜的详细表征，表明改性膜具有更光滑的表面，更好的亲水性和更多带负电荷的表面。更重要的是，经过模拟结垢和结垢实验后，改性膜表现出较低的通量下降率和较高的通量回收率。分析了防垢和防垢性能的机理。改性膜由于其易于操作的方法以及优异的抗结垢性和抗污性而将具有广阔的应用前景。