Aix-Marseille Université, IMEP - Institut Méditerranéen d'Ecologie et de Paléoécologie (UMR CNRS 6116) - Diversité Fonctionnelle des Communautés Végétales, Centre Saint Charles - case 4-3 place Victor Hugo, F-13331 Marseille, cedex 03, France.
Bioresour Technol. 2012 Feb;105:9-14. doi: 10.1016/j.biortech.2011.11.037. Epub 2011 Nov 20.
Vertical-flow wetland systems were tested for treatment of liquid waste activated sludge with high content of organic compounds from a soft drink factory. A mesocosm experiment was carried out on planted and unplanted systems to understand the relative importance of substrate and plants in purification processes and to compare three species: Phragmites australis Cav., Typha latifolia L., or Iris pseudacorus L. All planted mesocosms performed better than unplanted mesocosms and Phragmites showed the highest efficiencies, both in volumes and loads, closely followed by Typha. Removal efficiencies were very high in all cases, and physical filtration by the organic substrate was identified as the main processes for nutrient removal (>50%). We showed that plants played direct and indirect roles such as nutrients uptake (up to 23% of the N for Phragmites), evapotranspiration reducing outflow volumes; or improvement of filtration by the root systems and stimulation of microbial activities (respiration rate was double compared to unplanted mesocosms).
垂直流湿地系统被测试用于处理来自软饮料厂的高浓度有机化合物的液体废水。在种植和未种植系统上进行了中观实验，以了解基质和植物在净化过程中的相对重要性，并比较了三种物种：芦苇（Phragmites australis Cav.）、香蒲（Typha latifolia L.）或菖蒲（Iris pseudacorus L.）。所有种植的中观系统的表现都优于未种植的中观系统，芦苇的效率最高，无论是在体积还是负荷方面，香蒲紧随其后。在所有情况下，去除效率都非常高，并且通过有机基质的物理过滤被确定为去除营养物的主要过程（>50%）。我们表明，植物发挥了直接和间接的作用，如营养物的吸收（芦苇可达 23%的氮）、蒸腾作用减少流出量；或通过根系改善过滤和刺激微生物活性（与未种植的中观系统相比，呼吸率增加了一倍）。
