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首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >Treatment of domestic wastewater in a pilot-scale natural treatment system in central Mexico
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Treatment of domestic wastewater in a pilot-scale natural treatment system in central Mexico

机译：在墨西哥中部试点规模的自然处理系统中处理生活废水

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摘要

There is severe degradation of the water quality of the Texcoco River in central Mexico as a result of discharges of raw sewage from communities into the watershed.Constructed wetlands may be appropriate technologies for treating the domestic wastewater generated by small communities in central Mexico.To assess the removal of pollutants from wastewater,we constructed a pilot-scale treatment wetland in the small community of Santa Maria Nativitas in the Rio Texcoco watershed.The system,consisting of sedimentation terraces,stabilization pond,subsurface flow wetland (SSFW) and vertical flow wetland (VFW),removed >80% of TSS,COD and nitrate from domestic sewage.Removal of ammonium was less efficient at about 50%.This study also showed that ornamental flowers with high economic value planted in the SSFW performed as well as cattail (Typha angustifolia) in removing TSS and nitrogen.The treated water was suitable for irrigation,which could help to alleviate the scarcity of water in the Rio Texcoco watershed.Modeling exercises indicated that the pilot-scale wetland could be readily adapted to treat sewage from six families.
机译：墨西哥中部特克斯科河的水质严重恶化，原因是原社区的污水被排放到集水区中。人工湿地可能是处理墨西哥中部小社区产生的生活污水的合适技术。为了去除废水中的污染物，我们在里约Texcoco流域的Santa Maria Nativitas小社区中建立了中试规模的湿地。该系统由沉淀阶地，稳定池，地下流湿地（SSFW）和垂直流湿地组成（VFW）去除生活污水中的TSS，COD和硝酸盐> 80％。去除铵的效率较低，约为50％。该研究还表明，在SSFW中种植的具有高经济价值的观赏花卉表现出与香蒲一样的效果（香蒲（Typha angustifolia）去除TSS和氮。处理过的水适合灌溉，有助于减轻里约热内卢的水短缺建模练习表明，试验规模的湿地可以很容易地适应处理六个家庭的污水。

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