In constructed wetland (CW) ecology, plants play a vital role in wastewater treatment. The plants provide an adequate surface to various microorganisms, transfers oxygen and uptake nutrients to treat wastewater. This study deals with the treatment of greywater by using vertical flow constructed wetland system (VFCW). In the present study, two reactors were prepared for two different orientations in monoculture (S-1) and mixed culture (S-2) by using four types of macrophytes (Canna indica, Colocasia, Hymenocallis littoralis, and Phragmites australis). The reactors were operated in continuous mode for 90 days by maintaining the 10 mL/min flow rate and 1-day retention time. The mean removal efficiency of S-1 is 40.70, 33.69, 27.13, 48.17, 66.76, and 50.82% for ammonia, total kjeldahl nitrogen (TKN), phosphate, sulfate, turbidity, and chemical oxygen demand (COD), respectively. The mean removal efficiency of S-2 CW is 53.06, 34.54, 37.49, 48.64, 69.26, and 58.26% for ammonia, TKN, phosphate, sulfate, turbidity, and COD, respectively. ANOVA showed significant differences among both VFCWs in removal efficiency for all measured parameters. The performance of the two systems was compared with each other with the significance level of p = 0.05. The results indicated that the orientation of plant plays a major role in the removal of various physicochemical parameters.

在人工湿地（CW）生态中，植物在废水处理中起着至关重要的作用。这些植物为各种微生物提供了足够的表面，可以转移氧气和吸收养分来处理废水。本研究通过使用垂直流人工湿地系统（VFCW）处理灰水。在本研究中，通过使用四种类型的大型植物（印度大麻，香芋，Hymenocallis littoralis和Phragmites australis），为两种培养（S-1）和混合培养（S-2）的两个不同方向准备了两个反应器。）。通过保持10 mL / min的流速和1天的保留时间，反应器以连续模式运行90天。对于氨，凯氏总氮（TKN），磷酸盐，硫酸盐，浊度和化学需氧量（COD），S-1的平均去除效率分别为40.70、33.69、27.13、48.17、66.76和50.82％。S-2 CW对氨，TKN，磷酸盐，硫酸盐，浊度和COD的平均去除效率分别为53.06、34.54、37.49、48.64、69.26和58.26％。方差分析显示两种VFCW在所有测量参数的去除效率上均存在显着差异。将两个系统的性能相互比较，其显着性水平为p。 = 0.05。结果表明，植物的取向在去除各种理化参数中起主要作用。