Abstract With the discovery of the synergy of photosensitizers and non-photosynthetic bacteria under visible light, a new solar-driven biological wastewater treatment (SDBWT) technology is proposed and reviewed as a promising sustainable wastewater treatment technology. The SDBWT can take advantage of photosensitizers acting as a bridge to capture energy from light as a driving force for biological wastewater treatment. The unique electronic structure gives photosensitizers the roles of either electron donors or acceptors, which have directly or indirectly enhancing effects on the extracellular electron transfer efficiency of non-photosynthetic bacteria. Moreover, owing to the suitable electrical conductivity of some photosensitizers, the spatial connection between non-photosynthetic bacteria and electron acceptors can be improved, which enables accelerated electron transfer to enhance biodegradation efficiency. At present, SDBWT is proven to be suitable for not only elimination of many pollutants, but also improvement of the energy recovery efficiency from wastewater treatment process. This review systematically summarizes the state-of-the-art progress of SDBWT from working principles, system configurations and light-driven electron transfer mechanisms. Furthermore, the challenges and future directions in this interesting field are also given. This review will provide theoretical principles and valuable insights for the better future design and application of SDWBT in the wastewater treatment field.

中文翻译：

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基于光敏剂与非光合细菌协同作用的太阳能生物废水处理新技术

摘要 随着可见光下光敏剂与非光合细菌协同作用的发现，提出了一种新的太阳能驱动生物废水处理（SDBWT）技术，并将其作为一种有前景的可持续废水处理技术。SDBWT 可以利用光敏剂作为桥梁从光中捕获能量作为生物废水处理的驱动力。独特的电子结构赋予光敏剂以电子供体或受体的作用，这对非光合细菌的细胞外电子转移效率具有直接或间接的增强作用。此外，由于某些光敏剂具有合适的导电性，可以改善非光合细菌与电子受体之间的空间联系，这可以加速电子转移以提高生物降解效率。目前，SDBWT 已被证明不仅适用于消除多种污染物，而且适用于提高废水处理过程的能量回收效率。本综述从工作原理、系统配置和光驱动电子转移机制方面系统地总结了 SDBWT 的最新进展。此外，还给出了这个有趣领域的挑战和未来方向。这篇综述将为 SDWBT 在污水处理领域更好的未来设计和应用提供理论原理和有价值的见解。同时也提高了废水处理过程的能量回收效率。本综述从工作原理、系统配置和光驱动电子转移机制方面系统地总结了 SDBWT 的最新进展。此外，还给出了这个有趣领域的挑战和未来方向。这篇综述将为 SDWBT 在污水处理领域更好的未来设计和应用提供理论原理和有价值的见解。同时也提高了废水处理过程的能量回收效率。本综述从工作原理、系统配置和光驱动电子转移机制方面系统地总结了 SDBWT 的最新进展。此外，还给出了这个有趣领域的挑战和未来方向。这篇综述将为 SDWBT 在污水处理领域更好的未来设计和应用提供理论原理和有价值的见解。