Treatment of wet coffee processing plant wastewater by aeration with constructed wetland/cyperus ustulatus and typha latifolia plants process

Abstract

The research was carried out to investigate wastewater discharge’s technical viability from wet coffee processing plant (WCPP) treatments with aeration and Cyperus ustulatus plant, Typha latifolia plant. The WCPP wastewater was conducted at various aeration days (5, 10, 15, 20 and 25 d) after being irrigated for 21 d in the constructed wetland with Cyperus ustulatus and Typha latifolia plant and without a plant. The highest value of total solids, chemical oxygen demand and biochemical oxygen demand increasing were 87.8%, 97.4% and, 98.1%, respectively, in 25 d aerated with Typha latifolia plant (P2) wetland. After 25 d of aeration with Cyperus ustulatus plant (P1) treated polluted water value of biological oxygen demand (97.8%), chemical oxygen demand (96.9%) and total solids (88.5%). The Typha latifolia (P2) with 25 d aerated WCPWW reduced 94.2% and 98.1% of NO3 –N and PO43, respectively. As a result, the aeration days were increased with the removal efficiency of pollutants discharged from wet coffee processing plant increased with a constructed wetland. It shows that aeration with constructed wetland treatment method was a low-cost, affordable, technically viable and eco-friendly treatment option for the wet coffee processing plant wastewater.