Experimental Study of Towery Bio-rack Constructed Wetland for Domestic Wastewater Treatment

In recent years, constructed wetlands have been successful in treating domestic wastewater. The towery hybrid and bio-rack constructed wetlands are two new emerging technologies in a constructed wetland. A lab-scale model of a towery bio-rack constructed wetland (TBRCW) is developed at Walchand College of Engineering, Sangli, India. The Typha angustifolia plant species were vegetated in the system. The system was operated in sequential batch and continuous modes. The hydraulic retention time used was 17 and 7 h for batch and continuous modes, respectively. The operation simulates a typical intermittent flow from sources of wastewater generation. The performance assessment shows average COD removal efficiency of 50% and 67.14% for a continuous and batch mode of operation in sequence, respectively. Further, the dissolved oxygen level was also enhanced by 0.7 mg/L in the system.