Influence of plants on microbial activity in a vertical-downflow wetland system treating waste activated sludge with high organic matter concentrations.
作者： Runying Wang , Virginie Baldy , Claude Périssol , Nathalie Korboulewsky
DOI: 10.1016/J.JENVMAN.2011.03.021
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摘要: The rhizosphere is a key zone for pollutant removal in treatment wetlands; therefore, studies on microbial activity may provide helpful information better understanding of purification processes. We studied vertical-downflow constructed wetland system treating waste activated sludge with high organic matter concentrations, under Mediterranean climate. aims the work were to study influence (i) presence plants, (ii) plant species (Phragmites australis Cav., Typha latifolia L., Iris pseudacorus L.), and (iii) growth stage (plant senescence fast growing stage) total respiration rate phosphatase substrate (intented here as solid support which plants grow). had positive activity, since both acid alkaline always higher planted than unplanted mesocosms. Among three tested species, Phragmites was one that most stimulated followed by Iris. These differences between mesocosms corresponding efficiency. Substrate similar magnitude at two stages, while stimulating effect seemed have been delayed showed fluctuations senescence.
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