College of Resources and Environment, Huazhong Agricultural University, No.1 Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China.
Environ Sci Pollut Res Int. 2018 Mar;25(9):8532-8541. doi: 10.1007/s11356-017-1168-7. Epub 2018 Jan 8.
A hybrid constructed wetland (CW) system was operated at pilot scale to evaluate the treatment of domestic wastewater from university dorms in Hubei province, China. The hybrid system consisted of an integrated vertical flow constructed wetland (IVF CW) (a down-flow VF CW and an up-flow VF CW) and a horizontal subsurface flow constructed wetland (HSF CW). The influent for the hybrid CW containing chemical oxygen demand (COD), total phosphorus (TP), total nitrogen (TN), and ammonium nitrogen (NH-N) with mean concentrations of 152, 0.75, 18.9, and 8.9 mg L, respectively, was purified by the hybrid CW system to achieve mean removal efficiencies of 59.0% COD, 82.8% TP, 57.7% TN, and 79.2% NH-N over a 9-month period. The nitrification intensity of the media in the down-flow VF CW was the highest compared to the other CWs, whereas the denitrification intensity of the media in the HSF CW was significantly higher than the IVF CW. The abundance of nitrifying bacteria in the media of the IVF CW was higher than in the HSF CW, while a higher abundance of denitrifying bacteria was found in the HSF CW compared to the IVF CW, suggesting that the HSF CW was more suitable for the growth of denitrifying bacteria.
采用复合垂直流人工湿地（CW）系统对湖北省某高校学生宿舍生活污水进行了中试研究。该复合系统由一体式垂直流人工湿地（IVF CW）（下向流垂直流人工湿地和上向流垂直流人工湿地）和水平潜流人工湿地（HSF CW）组成。复合 CW 的进水 COD、TP、TN 和 NH-N 浓度均值分别为 152、0.75、18.9 和 8.9mg/L，水力停留时间为 20h，复合 CW 对进水 COD、TP、TN 和 NH-N 的平均去除率分别为 59.0%、82.8%、57.7%和 79.2%，整个运行周期为 9 个月。与其他 CW 相比，下向流垂直流人工湿地的基质硝化强度最高，而 HSF CW 的基质反硝化强度明显高于 IVF CW。IVF CW 中基质的硝化细菌丰度高于 HSF CW，而 HSF CW 中基质的反硝化细菌丰度高于 IVF CW，表明 HSF CW 更适合反硝化细菌的生长。
