This research aimed to synthesize polyvinyl fluoride membranes and coat them with tannic acid (TA) nanoparticles and polyethylene glycol (PEG) additives so that the membrane’s removal efficacy for humic acid (HA) pollutant from agricultural wastewater was investigated. Thus, six membranes with PEG:TA ratios of 0:0, 1:0, 0:1, 1:1, 4:1, and 1:4 were synthesized. Then, the membranes’ characteristics were identified by FTIR-ATR, FESEM, and AFM analysis, and HA’s particle size and zeta potential were also investigated. Based on optimizing effective parameters, the operating pressure of 1.5 bar and HA concentration of 80 ppm were selected as optimal values. The membrane with PEG:TA = 4:1, as the optimally modified membrane, had a pure water flux of 446.03 L/m².h, effluent flux of 72.43 L/m².h, and pollutant removal rate of 86.62% at pH = 7 after 60 min had passed. These values for the pristine membrane (PEG:TA = 0:0) were 265.64 L/m².h, 89.39 L/m².h, and 75.59%, respectively. The results showed that although the effluent flux was lower in the optimized modified membrane than in the pristine membrane, HA removal percentage was increased.

本研究旨在合成聚氟乙烯膜，并在其上涂覆单宁酸（TA）纳米粒子和聚乙二醇（PEG）添加剂，以研究该膜对农业废水中腐殖酸（HA）污染物的去除效果。因此，合成了 PEG:TA 比例为 0:0、1:0、0:1、1:1、4:1 和 1:4 的六种膜。然后，通过 FTIR-ATR、FESEM 和 AFM 分析鉴定膜的特性，并研究 HA 的粒径和 zeta 电位。在优化有效参数的基础上，选择操作压力1.5 bar和HA浓度80 ppm作为最佳值。 PEG:TA=4:1的膜作为优化改性膜，在20℃条件下纯水通量为446.03 L/m ² .h，出水通量为72.43 L/m ² .h，污染物去除率为86.62%。 60 分钟后 pH = 7。原始膜（PEG:TA = 0:0）的这些值分别为 265.64 L/m ² .h、89.39 L/m ² .h 和 75.59%。结果表明，虽然优化后的改性膜的出水通量低于原始膜，但HA去除率有所提高。