A UVC-assisted photo-Fenton process was applied to hospital wastewater that had been submitted to anaerobic treatment. Low iron (10 μM; 0.56 mg L⁻¹) and H₂O₂ (500 μM; 17 mg L⁻¹) concentrations were used at the natural pH of the effluent (pH ≈ 7.4). Citric acid was employed as a complexation agent, at a 1:1 ratio, in order to maintain Fe³⁺ soluble at this pH, avoiding extra procedures and costs associated with acidification/basification of the final effluent. The anaerobic process quantitatively reduced the biochemical oxygen demand (BOD₅), chemical oxygen demand (COD) and total organic carbon (TOC), with low removal of antibiotics present in the wastewater. Degradation of the antibiotics ciprofloxacin, amoxicillin, sulfathiazole, and sulfamethazine was studied by spiking the anaerobic effluent at initial concentrations of 200 μg L⁻¹. The antibiotics were efficiently degraded (80–95%) using UVC radiation alone, although under this condition, no DOC removal was observed after 90 min. Further additions of H₂O₂ and iron citrate increased the degradation rate constant (k_obs), and 8% of DOC was removed. A lower pH resulted in higher k_obs, although this was not essential for application of the photo-Fenton process. Irradiation with a germicidal lamp resulted in greater degradation of the antibiotics, compared to use of a black light lamp or sunlight, since the overall degradation was influenced by photolysis of the antibiotics, photolysis of H₂O₂, and the Fenton reaction. The photo-Fenton treatment could also be applied directly to the raw hospital wastewater, since no significant difference in degradation of the antibiotics was observed, compared to the anaerobic effluent. The photo-Fenton process under UVA and solar radiation reduced total coliforms and E. coli after 90 min. However, quantitative disinfection of these bacteria present in the Hospital effluent was only accomplished under UVC radiation.

将UVC辅助的光芬顿工艺应用于已进行厌氧处理的医院废水。在流出液的自然pH值（pH≈7.4）下使用低铁（10μM； 0.56 mg L ^-1）和H ₂ O ₂（500μM； 17 mg L ^-1）浓度。为了保持Fe ³⁺在此pH下可溶，使用柠檬酸以1：1的比例作为络合剂，从而避免了与最终废水酸化/碱化相关的额外程序和成本。厌氧过程从数量上减少了生化需氧量（BOD ₅），化学需氧量（COD）和总有机碳（TOC），且废水中存在的抗生素去除率较低。通过加标初始浓度为200μgL ^-1的厌氧废水，研究了环丙沙星，阿莫西林，磺胺噻唑和磺胺二甲嘧啶的降解。单独使用UVC辐射即可有效降解抗生素（80–95％），尽管在这种情况下，90分钟后未观察到DOC的去除。进一步添加H ₂ O ₂和柠檬酸铁增加了降解速率常数（k _obs），并去除了8％的DOC。较低的pH值导致了较高的ķ _OBS，尽管这对于应用Photo-Fenton工艺不是必需的。与使用黑光灯或日光照射相比，用杀菌灯照射导致抗生素降解更大，因为总体降解受到抗生素的光解，H ₂ O _2的光解和Fenton反应的影响。光芬顿处理也可以直接应用于医院的原始废水，因为与厌氧废水相比，没有观察到抗生素降解的显着差异。UVA和太阳辐射下的光芬顿过程减少了总大肠菌群和大肠杆菌90分钟后。但是，仅在UVC辐射下才能对医院废水中存在的这些细菌进行定量消毒。