This study reports the biomass accumulation, plant nutrient concentration, and nutrient uptake rates of plants in a constructed floating wetland (CFW) installed for a sewage treatment application in Australia. Plant biomass accumulation was estimated based on field samplings throughout the duration of the study. Analysis of samples of each plant species was also completed to estimate the mean plant tissue nutrient content. The plant biomass accumulation estimate and the mean plant tissue nutrient concentration were then used to estimate the total nutrient uptake for each species. Each of the species were found to differ in biomass accumulation and plant tissue nutrient concentration and the distribution of biomass and nutrients between the shoots and roots. The nutrient uptake rates varied between the species, with B. articulata having the greatest nutrient uptake rates (shoots: N, 104 ± 31.5 g/m², P, 12.9 ± 3.87 g/m²; roots: N, 23.9 ± 7.23 g/m², P, 5.54 ± 1.67 g/m²). Harvesting of the four CFW islands after 375 days of growth removed an estimated 23.2 kg of N and 2.97 kg of P. The results of this study indicate that the use of CFWs with carefully selected plant species can successfully remove significant amounts of nutrients from domestic wastewater.

中文翻译：

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使用人工漂浮湿地去除废物稳定池中的养分

本研究报告了澳大利亚为污水处理应用而安装的人工漂浮湿地 (CFW) 中植物的生物量积累、植物养分浓度和养分吸收率。植物生物量积累是根据整个研究期间的田间取样估算的。还完成了对每个植物物种样品的分析，以估计平均植物组织养分含量。然后使用植物生物量积累估计和平均植物组织养分浓度来估计每个物种的总养分吸收。发现每个物种在生物量积累和植物组织养分浓度以及芽和根之间生物量和养分的分布方面都不同。不同种类的养分吸收率不同，B. articulata具有最大的养分吸收率（芽：N，104 ± 31.5 g/m ²，P，12.9 ± 3.87 g/m ²；根：N，23.9 ± 7.23 g/m ²，P，5.54 ± 1.67 g /米² )。四个 CFW 岛在生长 375 天后收获，估计去除了 23.2 千克 N 和 2.97 千克 P。本研究的结果表明，使用 CFW 和精心挑选的植物物种可以成功去除生活废水中的大量养分.