The feasibility of combined coagulation flocculation and constructed wetland as green technology for sustainable leachate treatment

Abstract This study aims to determine the feasibility of coagulation flocculation processing using Moringa oleífera seed powder (MOSP) and vertical sub surface flow constructed wetlands (VSSFCW) process leachate landfill (LL). The method used is do a jar test optimum conditions then proceed with VSSFCW processing. In process, were obtained dose 175 mg/L, pH 6.5 speed rapid mixing 100 rpm for 10 minutes. condition able reach percentage COD, turbidity Mn removal 35.27%, 69.48%, 94.83%, respectively. However, effluent value still above Minister Environment regulation standard No. 5/2014 regarding quality wastewater parameters COD that equal 584.19 mg/L 6.98 Mn, while meets 69.83 mg/L. Further VSSFCWs can improve LL resulting from 66.36 mg/L; 4.97 0.12 or efficiencies 88.64%, 92.88% 98.22%. These results at HRT days.