College of the Environment and Ecology, Xiamen University, Xiamen, 361102, PR China.
Haixi (Fujian) Institute, China Academy of Machinery Science and Technology Group, Sanming, 365500, PR China.
J Environ Manage. 2023 Oct 15;344:118383. doi: 10.1016/j.jenvman.2023.118383. Epub 2023 Jun 20.
Nutrient recovery from wastewater not only reduces the nutrient load on water resources but also alleviates the environmental problems in aquatic ecosystems, which is a solution to achieve a sustainable society. Besides, struvite crystallization technology is considered a potential nutrient recovery technology because the precipitate obtained can be reused as a slow-release fertilizer. This review presents the basic properties of struvite and the theory of the basic crystallization process. In addition, the possible influencing variables of the struvite crystallization process on the recovery efficiency and product purity are also examined in detail. Then, the advanced auxiliary technologies for facilitating the struvite crystallization process are systematically discussed. Moreover, the economic and environmental benefits of the struvite crystallization process for nutrient recovery are introduced. Finally, the shortcomings and inadequacies of struvite crystallization technology are presented, and future research prospects are provided. This work serves as the foundation for the future use of struvite crystallization technology to recover nutrients in response to the increasingly serious environmental problems and resource depletion.
从废水中回收营养物质不仅可以减少水资源的营养负荷，还可以缓解水生生态系统的环境问题，这是实现可持续社会的一种解决方案。此外，鸟粪石结晶技术被认为是一种有潜力的营养回收技术，因为得到的沉淀物可以被再利用作为缓释肥料。本综述介绍了鸟粪石的基本性质和基本结晶过程的理论。此外，还详细研究了影响鸟粪石结晶过程的回收率和产物纯度的可能影响变量。然后，系统地讨论了促进鸟粪石结晶过程的先进辅助技术。此外，还介绍了鸟粪石结晶过程在回收营养物质方面的经济和环境效益。最后，提出了鸟粪石结晶技术的缺点和不足，并提供了未来的研究前景。这项工作为未来利用鸟粪石结晶技术回收营养物质以应对日益严重的环境问题和资源枯竭奠定了基础。
