In this work the effect of water temperature (6 ± 1 °C and 22 ± 1 °C) on inactivation of bacteria (10⁴ –10⁶ CFU mL⁻¹; Pseudomonas spp., Aeromonas spp. and Enterobacter spp.) in simulated aquaculture streams (SAS) using UVA based advanced oxidation processes (AOP) (H₂O₂-assisted UVA; photocatalysis; H₂O₂-assisted photocatalysis) and solar driven AOPs (H₂O₂-assisted solar disinfection, SODIS) was studied. Efficiency at 22 °C in terms of inactivation rate was higher using H₂O₂-assisted photocatalysis (H₂O₂/UVA-TiO₂/polysiloxane) > H₂O₂-assisted UVA disinfection (UVA/H₂O₂ – 10 mg L^-1) > photocatalysis (UVA-TiO₂/polysiloxane) > UVA disinfection. At low temperature (6 °C) the inactivation rate increased with SODIS/H₂O₂ > SODIS > H₂O₂-assisted UVA disinfection (UVA/H₂O₂ – 10 mg L^-1) > H₂O₂-assisted photocatalysis (H₂O₂/UVA-TiO₂/polysiloxane) > photocatalysis (UVA-TiO₂/polysiloxane). The main results indicate that the inactivation rates increased when hydrogen peroxide (10 mg L^-1) was used during H₂O₂-assisted UVA disinfection and photocatalysis. In addition, exposure of SAS to hydrogen peroxide for 24 h (in absence of light) at room temperature decreased the subsequent exposure UVA irradiation dose by almost four times.

Drastic increase of inactivation rate was observed at low water temperature (6 ± 1 °C) when UVA- and solar-based AOPs were employed compared to 22 ± 1 °C. The treatment with SODIS proved to be more effective in Finland than in Spain. The effect of the low temperature (6 ± 1 °C) was proposed as a critical factor during UVA disinfection (UVA/H₂O₂ and photocatalysis) that can increase the disinfection rate constant (k_max) by 1.3–5.2 times, leading to a reduction of the treatment costs (€ m⁻³) by 1.3–3.3 times. The mechanism of observed enhanced disinfection at low water temperature (6 ± 1 °C) when natural solar light and UVA are employed as irradiation sources for UVA/H₂O₂ and photocatalytic bacteria inactivation was proposed. No regrowth was observed in case of H₂O₂-assisted AOPs.

在这项工作中，水温（6 ± 1 °C 和 22 ± 1 °C）对模拟细菌（10 ⁴ –10 ⁶ CFU mL ^-1；假单胞菌属、气单胞菌属和肠杆菌属）灭活的影响使用基于 UVA 的高级氧化工艺 (AOP)（H ₂ O ₂辅助 UVA；光催化；H ₂ O ₂辅助光催化）和太阳能驱动的AOP （H ₂ O ₂辅助太阳能消毒，SODIS）的水产养殖流（SAS ）是学习了。使用 H ₂ O ₂在 22 °C 下的灭活率效率更高-辅助光催化（H ₂ O ₂ /UVA-TiO ₂ /聚硅氧烷）> H ₂ O _{2 -}辅助UVA消毒（UVA/H ₂ O ₂ – 10 mg L ^-1）>光催化（UVA-TiO ₂ /聚硅氧烷）>紫外线消毒。在低温 (6 °C) 下，灭活率随 SODIS/H ₂ O ₂  > SODIS > H ₂ O ₂辅助 UVA 消毒（UVA/H ₂ O ₂ – 10 mg L ^-1）> H ₂ O ₂ - 增加辅助光催化（H ₂ O₂ /UVA-TiO ₂ /聚硅氧烷）>光催化（UVA-TiO ₂ /聚硅氧烷）。主要结果表明，在 H ₂ O ₂辅助的 UVA 消毒和光催化过程中使用过氧化氢 (10 mg L ^-1 )时灭活率增加。此外，在室温下将 SAS 暴露于过氧化氢 24 小时（在没有光的情况下）将随后暴露的 UVA 照射剂量降低了近四倍。

与 22 ± 1 °C 相比，当使用基于 UVA 和太阳能的 AOP 时，在低水温 (6 ± 1 °C) 下观察到灭活率急剧增加。SODIS 治疗在芬兰被证明比在西班牙更有效。低温 (6 ± 1 °C) 的影响被认为是 UVA 消毒（UVA/H ₂ O ₂和光催化）过程中的一个关键因素，可以将消毒速率常数 (k _max ) 提高 1.3–5.2 倍，导致将处理成本（€ m ^-3）降低 1.3-3.3 倍。使用自然太阳光和 UVA 作为 UVA/H ₂ O _{2 的}辐照源时，观察到的在低水温 (6 ± 1 °C) 下增强消毒的机制并提出了光催化细菌灭活。在 H ₂ O ₂辅助的 AOP 的情况下没有观察到再生长。