【摘要】 以红树植物秋茄为湿地植物构建耐盐人工湿地系统,以研究采用红树林人工湿地工艺处理含海水污水的可行性及其处理特性,实验中分别研究了红树林人工湿地系统处理含海水比例为10%、30%和50%的污水时的处理效果。研究结果表明,当污水中海水比例在30%以下时,红树林人工湿地对含海水污水具有较好的处理效果,其对NH4+-N、TN、TP及COD等指标的去除率分别达到71.6%～79.8%、75.5%～89.6%、82.7%～97.4%及66.6%～85.3%,处理效果较好。当海水比例为50%时,红树林人工湿地的净化效果明显下降,对COD的去除率下降至40%左右。实验中进一步研究了在进水海水比例为30%情况下人工湿地的负荷对其净化效果的影响,研究结果表明,当进水COD负荷维持在12.6～18.9 g/(m2·d)范围内,可使红树林人工湿地达到较高的运行效率,其对对COD的去除率稳定在70%左右。更多还原

【Abstract】 The feasibility of using constructed mangrove wetlands to treat saline municipal wastewater was evaluated in this study. Constructed wetland, acting as an ecological engineering alternative, is capable of reducing NH4 +-N、TN、TP and COD from saline wastewater. During the 10 months′ operating period, the constructed wetland was operated with salinity increasing from 10 to 50 parts per thousands(%). When the salinity of wastewater was below 30%, the removal rates of NH4 +-N, TN, TP and COD were 71.6%-79.8% 、75.5%-89.6%、82.7%-97.4% and 66.6%-85.3%, respectively. The removal rate of COD decreased to about 40% when the salinity increased to 50%. A good performance of COD removal was obtained when the constructed mangrove wetland was operated at loading rate between 12.6-18.9 g/(m2·d). The preliminary result shows that constructed mangrove wetland for saline municipal wastewater treatment have broad future.更多还原