Textile wastewater treatment is a challenging process due to its high-intensity color and high COD value. In this study, the effect of design parameters of constructed wetlands in the treatment of synthetic textile dyeing bath effluent using horizontal flow constructed wetlands was explored. The effect of length of flow through the wetlands and hydraulic retention time in pollutant removal were analyzed. Two wetland reactors, one baffled, and the other non-baffled reactors were operated with varying lengths of flow and HRT (3 days to 7 days). It was observed that the maximum color (72 ± 2%) and COD removal (85 ± 3%) occurred in the baffled reactor at a dye loading rate of 1.15 g/m² d and COD loading rate of 10.3 g/m² d. The pH change and sulfate removal rates (34 ± 2%) at a sulfate loading rate of 2.8 g/m² d were similar in both reactors. Overall, the length of flow affected slightly the performance of wetland reactors for color and COD removal. The study suggests that there exists a need for the development of proper design parameters for the effective use of constructed wetlands in the treatment of wastewater.

由于其高强度颜色和高 COD 值，纺织废水处理是一个具有挑战性的过程。本研究探讨了人工湿地设计参数对水平流人工湿地处理合成纺织染浴废水的影响。分析了流经湿地的长度和水力停留时间对污染物去除的影响。两个湿地反应器，一个有挡板的，另一个是无挡板的，以不同长度的流量和 HRT（3 天到 7 天）运行。观察到最大颜色 (72 ± 2%) 和 COD 去除率 (85 ± 3%) 出现在挡板反应器中，染料负载率为 1.15 g/m ² d 和 COD 负载率为 10.3 g/m ²d. 在 2.8 g/m ² d硫酸盐加载速率下，两个反应器的 pH 值变化和硫酸盐去除率 (34 ± 2%)相似。总的来说，流动的长度对湿地反应器的颜色和 COD 去除性能有轻微影响。该研究表明，需要制定适当的设计参数，以有效利用人工湿地处理废水。