SEWAGE TREATMENT PERFORMANCE OF CONSTRUCTED WETLANDS USING VETIVERIA ZIZANIOIDES

Constructed wetlands are one of the alternative treatments for treating domestic wastewater since they are low-energy, low-maintenance and environmentally friendly. The purpose of this research was to see if the vetiveria zizaniodes plant could be used to eliminate pollution from a created wetland. Two alternative flow systems were used in the study, a 5-day retention period and no retention time flow system. In each cell of the constructed wetlands, vetiveria zizanoides were planted in different populations. The systems' effectiveness in minimising oil and grease (O&G) concentrations, total suspended solid (TSS), and biochemical oxygen demand (BOD) was measured by means of dissolved oxygen (DO) and pH, respectively. The analysis indicates that using vetiveria zizanioides in the artificial wetland may minimise near to 53.08 % BOD and 50.75 % O&G for 60 days of treatment for a 5-day retention duration. Meanwhile, the wetland was possible to reduce 61.92 % TSS on day 60 at zero hydraulic retention time (HRT) in that same 60 days of treatment. The vetiveria zizanioides plant was discovered to play a substantial role in eliminating BOD, TSS, and O&G during HRT as a result of the findings.