The layout of the system comprised 3 experimental units with 3 replicates. Each unit consists of one level of water depth with four levels of Pistia stratiotes coverage (50; 70; 90 and 0% (control)) under the outdoor condition. The results indicated that P. stratiotes can be successfully used for wastewater treatment since it had the ability to achieve the goal of proposed design; where the highest removal percentages of BOD₅; NH₃; TN; TP were 83.5; 97.53; 90.3; 87% after 5; 3; 5; 4 days, respectively in the case of 25 cm of water depth with plant coverage of (90; 70; 50 and 70%, respectively). As compared with K—C* and P—K—C* models, this system achieved high removal efficiencies of water measurements and heavy metals (Fe, Cu, Ni and Pb). The results showed that this aquatic plant P. stratiotes can be successfully used for waste water treatment and therefore can be used for large-scale.

中文翻译：

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改良工程设计的生菜（Pistia stratiotes）废水处理潜力。

系统的布局包括3个实验单元和3个重复单元。在室外条件下，每个单元均包含一个水深级别和四个水浮萍层级覆盖率（50％； 70％； 90％和0％（对照））。结果表明，P。stratiotes有能力达到拟议设计的目标，因此可以成功用于废水处理。BOD ₅去除率最高; NH ₃; TN; 目标价为83.5；97.53; 90.3；5后为87％；3; 5; 在水深25厘米的情况下分别为4天，植物覆盖率为（分别为90％，70％，50％和70％）。与CK *和PKC *模型相比，该系统实现了水测量和重金属（Fe，Cu，Ni和Pb）的高去除效率。结果表明，该水生植物纹层可以成功地用于废水处理，因此可以大规模使用。