The photo‐Fenton process faces significant limitations in treating high‐turbidity, colored wastewater due to light attenuation and impurity interference (blocked mass transfer). To address these issues, we developed a suspended photothermal Fenton membrane by loading a photothermal catalyst on a hydrophobically modified cotton filter paper, enabling precise suspension 1 mm below the water surface. This design achieved 89.49 % light utilization and high chemical oxygen demand (COD) removal, even in wastewater with extreme chromaticity (10 multiples) and turbidity (703 NTU). The enhanced photothermal conversion accelerated molybdenum co‐catalyzed Fenton reactions and improved peroxymonosulfate (PMS) activation, maintaining over 90 % phenol removal for 15 days. Mechanistic simulations revealed improved mass transfer of reactive oxygen species (ROS) and pollutants at the solid‐liquid interface, with PMS diffusion identified as the rate‐limiting step. The membrane resisted fouling from suspended solids and maintained stable operation in soil‐containing solutions for 10 days. This innovative approach offers an efficient solution for degrading pollutants in dark‐colored, high‐turbidity wastewater, overcoming traditional process limitations.

中文翻译：

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具有协同光利用的传质增强型光热膜，用于高浊度废水净化


由于光衰减和杂质干扰（传质受阻），光 Fenton 工艺在处理高浊度、有色废水方面面临重大限制。为了解决这些问题，我们通过将光热催化剂负载在疏水改性棉滤纸上开发了一种悬浮的光热 Fenton 膜，从而能够在水面以下 1 毫米处精确悬浮。该设计实现了 89.49% 的光利用率和高化学需氧量 （COD） 去除，即使在色度 （10 倍） 和浊度 （703 NTU） 的废水中也是如此。增强的光热转化加速了钼共催化的 Fenton 反应并改善了过氧一硫酸盐 （PMS） 活化，在 15 天内保持超过 90% 的苯酚去除率。机理模拟显示，活性氧 （ROS） 和污染物在固液界面处的质量传递得到改善，PMS 扩散被确定为限速步骤。该膜可抵抗悬浮固体的污染，并在含土壤溶液中保持稳定运行 10 天。这种创新方法为降解深色、高浊度废水中的污染物提供了一种有效的解决方案，克服了传统的工艺限制。