This study aimed to evaluate the influence of two different feeding modes on wastewater treatment performance and oxygen consumption rate (OCR) of the unsaturated (UVF wetland) and partially saturated (SVF wetland) vertical flow constructed wetlands operated in parallel under subtropical climate for four years. Each wetland had a superficial area of 7.5 m² and was planted with Typha domingensis. Both units have a filter media depth of 0.75 m, composed by sand (effective diameter of 0.29 mm and uniformity of 4). UVF wetland operated typically unsaturated, while SVF wetland had the bottom part saturated (57% of total depth). Two feeding modes were evaluated for both wetlands. The feeding mode was operated within the limits recommended by the German standard, with a hydraulic loading rate (HLR) of 75 mm d^-1 and specific pulse volume (SPV) of 19 L m^-2 for both wetlands and a specific hydraulic loading rate (SHLR) of 8 and 9 L m^-2 min^-1 for UVF and SVF wetlands, respectively. Meanwhile, the second feeding mode was applied for both wetlands, being an HLR of 103 mm d^-1, 26 L m^-2 of SPV, and 4 L m^-2 min^-1 of SHLR. The load removal efficiency of SVF wetland was higher than the UVF wetland for all parameters and feeding modes. No statistical difference was identified for OCR values between wetlands and feeding mode. The results showed that operating UVF and SVF wetlands with a SHLR around 4 L m^-2 min^-1 and SPV equal of 26 L m^-2 is preferable. This fact could represent a significant reduction in inlet pumping power requirements and also less superficial area requirements.

这项研究旨在评估在亚热带气候下连续运行四年的非饱和（UVF湿地）和部分饱和（SVF湿地）垂直流人工湿地对两种处理方式对废水处理性能和耗氧率（OCR）的影响。 。每个湿地的表面面积为7.5 m ²，并种植有香蒲。这两个单元的过滤介质深度均为0.75 m，由沙子组成（有效直径为0.29 mm，均匀度为4）。UVF湿地通常处于不饱和状态，而SVF湿地的底部饱和（占总深度的57％）。评价了两个湿地的两种饲养方式。进给模式在德国标准建议的限制内运行，两个湿地的液压负载率（HLR）为75 mm d ^-1，比脉动量（SPV）为19 L m ^-2，并且具有特定的液压负载率UVF和SVF湿地的（SHLR）分别为8和9 L m ^-2 min ^-1。同时，对两个湿地都应用了第二种喂养方式，即HLR为103 mm d ^-1，26 L m ^-2SPV和4 L m ^-2 min ^-1的SHLR。在所有参数和进料方式下，SVF湿地的负荷去除效率均高于UVF湿地。湿地和喂养方式之间的OCR值没有统计学差异。结果表明，使用SHLR约为4 L m ^-2 min ^-1且SPV等于26 L m ^-2的UVF和SVF湿地是优选的。这一事实可能表示进口泵浦功率要求的显着降低，以及表层面积要求的降低。