The topic of this master thesis is the recycling of urine-polluted water using photocatalysis and ultrasound technologies. Urine is a significant pollutant in wastewater due to compounds like urea, which can adversely affect the environment. Given the growing ecological challenges, effective methods for treating and recycling this water is necessary. The theoretical part analyses the chemical composition of urine, the sources of urine contamination, and its environmental impact. It explores recycling urine as fertilizer, its application in space stations, and the removal of urea from water. The focus of this thesis is on photocatalysis and ultrasound technologies, which offer innovative methods for degrading pollutants in water. The experimental section involves testing methods on model urea solutions. Various setups are investigated, including those with ultrasound, photocatalysis, and a combination of both processes, known as Sono photocatalysis. Different photocatalysts, such as titanium dioxide (TiO2) and TiO2/CNT (nanocomposite of TiO2 and carbon nanotubes), are used in suspended and immobilized forms. The LC/MS QTOF (liquid chromatography coupled with mass spectrometry quadrupole time of flight) analytical method is used for the precise measurement of the effectiveness of each method. The results highlight the advantages and challenges of applying these technologies, providing guidelines for the development of sustainable wastewater treatment methods. The research presented in this mater contributes to the understanding of innovative approaches in environmental protection and water resource management.