The study aimed to reduce the storage time of urine treatment and assess the quality of treated urine following the Solar DISinfection (SODIS) method. Microbiological analyses were performed on urine samples taken before each sunlight exposure, between 10am and 4pm at a frequency of 1 h, during which temperature was measured in PET bottles (1.5 L). The initial concentrations of Escherichia coli (E. coli) and Salmonella in unstored urine were 10⁶ and 10³ CFU/100 mL respectively. The combined effect of temperature and UV radiation increased inactivation efficiency of E. coli at 5 log units. On the other hand, 98% of Salmonella were inactivated in less than 3 h of continuous exposure between 12am and 3pm with temperature varying between 50 and 65 °C in PET bottles. The k values showed that the inactivation rate of Salmonella tested was accelerated when the temperature was above 50 °C. Then, the results indicated that the first-order exponential decay model was the best method to predict the inactivation of Salmonella in urine by SODIS. General results showed that after 3 days of exposure to sunlight, urine collected via eco-toilet becomes bacteriologically sanitized and therefore can be used in agriculture.

这项研究旨在减少尿液治疗的储存时间，并按照太阳消毒法（SODIS）评估经过处理的尿液的质量。在每次阳光照射前的上午10点至下午4点之间，以1 h的频率对尿液样品进行微生物学分析，在此过程中在PET瓶（1.5 L）中测量温度。的初始浓度的大肠杆菌（大肠杆菌）和沙门氏菌在未存储的尿分别为10 ⁶和10 ³ CFU / 100mL的分别。温度和紫外线辐射的共同作用提高了5对数单位大肠杆菌的灭活效率。另一方面，沙门氏菌的98％在PET瓶中，在凌晨12点至下午3点之间连续暴露少于3小时且温度在50至65°C之间变化时，它们被灭活。k值表明，当温度高于50°C时，沙门氏菌的失活速率加快。结果表明，一阶指数衰减模型是预测SODIS对尿液中沙门氏菌灭活的最佳方法。总体结果表明，暴露在阳光下三天后，通过生态厕所收集的尿液经过了细菌消毒处理，因此可用于农业。